S: USA
N: Philip Gladstone
-E: philip@raptor.com
+E: philip@gladstonefamily.net
D: Kernel / timekeeping stuff
+S: Carlisle, MA 01741
+S: USA
N: Jan-Benedict Glaw
E: jbglaw@lug-owl.de
D: Miscellaneous kernel fixes
N: Alessandro Zummo
-E: azummo@ita.flashnet.it
-W: http://freepage.logicom.it/azummo/
+E: a.zummo@towertech.it
D: CMI8330 support is sb_card.c
D: ISAPnP fixes in sb_card.c
+D: ZyXEL omni.net lcd plus driver
+D: RTC subsystem
S: Italy
N: Marc Zyngier
"mydev: 24-bit DMA addressing not available.\n");
goto ignore_this_device;
}
+[Better use DMA_24BIT_MASK instead of 0x00ffffff.
+See linux/include/dma-mapping.h for reference.]
When pci_set_dma_mask() is successful, and returns zero, the PCI layer
saves away this mask you have provided. The PCI layer will use this
{
int cpu;
- for_each_cpu(cpu)
+ for_each_possible_cpu(cpu)
run_on(cpu);
}
A couple of bootloaders able to boot Linux on Assabet are available:
-BLOB (http://www.lart.tudelft.nl/lartware/blob/)
+BLOB (http://www.lartmaker.nl/lartware/blob/)
BLOB is a bootloader used within the LART project. Some contributed
patches were merged into BLOB to add support for Assabet.
planning.
The hardware designs for this board have been released under an open license;
-see the LART page at http://www.lart.tudelft.nl/ for more information.
+see the LART page at http://www.lartmaker.nl/ for more information.
limit. No highmem default.
blk_queue_max_sectors(q, max_sectors)
- Maximum size request you can handle in units of 512 byte
- sectors. 255 default.
+ Sets two variables that limit the size of the request.
+
+ - The request queue's max_sectors, which is a soft size in
+ in units of 512 byte sectors, and could be dynamically varied
+ by the core kernel.
+
+ - The request queue's max_hw_sectors, which is a hard limit
+ and reflects the maximum size request a driver can handle
+ in units of 512 byte sectors.
+
+ The default for both max_sectors and max_hw_sectors is
+ 255. The upper limit of max_sectors is 1024.
blk_queue_max_phys_segments(q, max_segments)
Maximum physical segments you can handle in a request. 128
You really dont need to manipulate any of the system cpu maps. They should
be read-only for most use. When setting up per-cpu resources almost always use
-cpu_possible_map/for_each_cpu() to iterate.
+cpu_possible_map/for_each_possible_cpu() to iterate.
Never use anything other than cpumask_t to represent bitmap of CPUs.
#include <linux/cpumask.h>
-for_each_cpu - Iterate over cpu_possible_map
+for_each_possible_cpu - Iterate over cpu_possible_map
for_each_online_cpu - Iterate over cpu_online_map
for_each_present_cpu - Iterate over cpu_present_map
for_each_cpu_mask(x,mask) - Iterate over some random collection of cpu mask.
-Export cpu topology info by sysfs. Items (attributes) are similar
+Export cpu topology info via sysfs. Items (attributes) are similar
to /proc/cpuinfo.
1) /sys/devices/system/cpu/cpuX/topology/physical_package_id:
represent the thread siblings to cpu X in the same physical package;
To implement it in an architecture-neutral way, a new source file,
-driver/base/topology.c, is to export the 5 attributes.
+drivers/base/topology.c, is to export the 4 attributes.
If one architecture wants to support this feature, it just needs to
implement 4 defines, typically in file include/asm-XXX/topology.h.
00-INDEX
- this file (info on some of the filesystems supported by linux).
+Exporting
+ - explanation of how to make filesystems exportable.
Locking
- info on locking rules as they pertain to Linux VFS.
adfs.txt
- info and mount options for the Acorn Advanced Disc Filing System.
+afs.txt
+ - info and examples for the distributed AFS (Andrew File System) fs.
affs.txt
- info and mount options for the Amiga Fast File System.
+automount-support.txt
+ - information about filesystem automount support.
+befs.txt
+ - information about the BeOS filesystem for Linux.
bfs.txt
- info for the SCO UnixWare Boot Filesystem (BFS).
cifs.txt
- - description of the CIFS filesystem
+ - description of the CIFS filesystem.
coda.txt
- description of the CODA filesystem.
configfs/
- directory containing configfs documentation and example code.
cramfs.txt
- - info on the cram filesystem for small storage (ROMs etc)
+ - info on the cram filesystem for small storage (ROMs etc).
+dentry-locking.txt
+ - info on the RCU-based dcache locking model.
devfs/
- directory containing devfs documentation.
+directory-locking
+ - info about the locking scheme used for directory operations.
dlmfs.txt
- info on the userspace interface to the OCFS2 DLM.
ext2.txt
- info, mount options and specifications for the Ext2 filesystem.
+ext3.txt
+ - info, mount options and specifications for the Ext3 filesystem.
+files.txt
+ - info on file management in the Linux kernel.
+fuse.txt
+ - info on the Filesystem in User SpacE including mount options.
+hfs.txt
+ - info on the Macintosh HFS Filesystem for Linux.
hpfs.txt
- info and mount options for the OS/2 HPFS.
isofs.txt
- info on Novell Netware(tm) filesystem using NCP protocol.
ntfs.txt
- info and mount options for the NTFS filesystem (Windows NT).
-proc.txt
- - info on Linux's /proc filesystem.
ocfs2.txt
- info and mount options for the OCFS2 clustered filesystem.
+porting
+ - various information on filesystem porting.
+proc.txt
+ - info on Linux's /proc filesystem.
+ramfs-rootfs-initramfs.txt
+ - info on the 'in memory' filesystems ramfs, rootfs and initramfs.
+reiser4.txt
+ - info on the Reiser4 filesystem based on dancing tree algorithms.
+relayfs.txt
+ - info on relayfs, for efficient streaming from kernel to user space.
romfs.txt
- - Description of the ROMFS filesystem.
+ - description of the ROMFS filesystem.
smbfs.txt
- - info on using filesystems with the SMB protocol (Windows 3.11 and NT)
+ - info on using filesystems with the SMB protocol (Win 3.11 and NT).
+spufs.txt
+ - info and mount options for the SPU filesystem used on Cell.
+sysfs-pci.txt
+ - info on accessing PCI device resources through sysfs.
+sysfs.txt
+ - info on sysfs, a ram-based filesystem for exporting kernel objects.
sysv-fs.txt
- info on the SystemV/V7/Xenix/Coherent filesystem.
+tmpfs.txt
+ - info on tmpfs, a filesystem that holds all files in virtual memory.
udf.txt
- info and mount options for the UDF filesystem.
ufs.txt
- info on the ufs filesystem.
+v9fs.txt
+ - v9fs is a Unix implementation of the Plan 9 9p remote fs protocol.
vfat.txt
- info on using the VFAT filesystem used in Windows NT and Windows 95
vfs.txt
- - Overview of the Virtual File System
+ - overview of the Virtual File System
xfs.txt
- info and mount options for the XFS filesystem.
+xip.txt
+ - info on execute-in-place for file mappings.
'#' 00-3F IEEE 1394 Subsystem Block for the entire subsystem
'1' 00-1F <linux/timepps.h> PPS kit from Ulrich Windl
<ftp://ftp.de.kernel.org/pub/linux/daemons/ntp/PPS/>
-'6' 00-10 <asm-i386/processor.h> Intel IA32 microcode update driver
- <mailto:tigran@veritas.com>
'8' all SNP8023 advanced NIC card
<mailto:mcr@solidum.com>
'A' 00-1F linux/apm_bios.h
$48, while it doesn't matter how often you're writing to $4a
as long as $48 is not touched. After $48 has been written,
the whole card disappears from $e8 and is mapped to the new
-address just written. Make shure $4a is written before $48,
+address just written. Make sure $4a is written before $48,
otherwise your chance is only 1:16 to find the board :-).
The local memory-map is even active when mapped to $e8:
* would fail and generate an error message in the system log.
* - For opt_c: slave should not be set to the master's setting
* while it is running. It was already set during enslave. To
- * simplify things, it is now handeled separately.
+ * simplify things, it is now handled separately.
*
* - 2003/12/01 - Shmulik Hen <shmulik.hen at intel dot com>
* - Code cleanup and style changes
pnp_register_driver
- adds a PnP driver to the Plug and Play Layer
- this includes driver model integration
+- returns zero for success or a negative error number for failure; count
+ calls to the .add() method if you need to know how many devices bind to
+ the driver
pnp_unregister_driver
- removes a PnP driver from the Plug and Play Layer
--- /dev/null
+Started by Paul Jackson <pj@sgi.com>
+
+The robust futex ABI
+--------------------
+
+Robust_futexes provide a mechanism that is used in addition to normal
+futexes, for kernel assist of cleanup of held locks on task exit.
+
+The interesting data as to what futexes a thread is holding is kept on a
+linked list in user space, where it can be updated efficiently as locks
+are taken and dropped, without kernel intervention. The only additional
+kernel intervention required for robust_futexes above and beyond what is
+required for futexes is:
+
+ 1) a one time call, per thread, to tell the kernel where its list of
+ held robust_futexes begins, and
+ 2) internal kernel code at exit, to handle any listed locks held
+ by the exiting thread.
+
+The existing normal futexes already provide a "Fast Userspace Locking"
+mechanism, which handles uncontested locking without needing a system
+call, and handles contested locking by maintaining a list of waiting
+threads in the kernel. Options on the sys_futex(2) system call support
+waiting on a particular futex, and waking up the next waiter on a
+particular futex.
+
+For robust_futexes to work, the user code (typically in a library such
+as glibc linked with the application) has to manage and place the
+necessary list elements exactly as the kernel expects them. If it fails
+to do so, then improperly listed locks will not be cleaned up on exit,
+probably causing deadlock or other such failure of the other threads
+waiting on the same locks.
+
+A thread that anticipates possibly using robust_futexes should first
+issue the system call:
+
+ asmlinkage long
+ sys_set_robust_list(struct robust_list_head __user *head, size_t len);
+
+The pointer 'head' points to a structure in the threads address space
+consisting of three words. Each word is 32 bits on 32 bit arch's, or 64
+bits on 64 bit arch's, and local byte order. Each thread should have
+its own thread private 'head'.
+
+If a thread is running in 32 bit compatibility mode on a 64 native arch
+kernel, then it can actually have two such structures - one using 32 bit
+words for 32 bit compatibility mode, and one using 64 bit words for 64
+bit native mode. The kernel, if it is a 64 bit kernel supporting 32 bit
+compatibility mode, will attempt to process both lists on each task
+exit, if the corresponding sys_set_robust_list() call has been made to
+setup that list.
+
+ The first word in the memory structure at 'head' contains a
+ pointer to a single linked list of 'lock entries', one per lock,
+ as described below. If the list is empty, the pointer will point
+ to itself, 'head'. The last 'lock entry' points back to the 'head'.
+
+ The second word, called 'offset', specifies the offset from the
+ address of the associated 'lock entry', plus or minus, of what will
+ be called the 'lock word', from that 'lock entry'. The 'lock word'
+ is always a 32 bit word, unlike the other words above. The 'lock
+ word' holds 3 flag bits in the upper 3 bits, and the thread id (TID)
+ of the thread holding the lock in the bottom 29 bits. See further
+ below for a description of the flag bits.
+
+ The third word, called 'list_op_pending', contains transient copy of
+ the address of the 'lock entry', during list insertion and removal,
+ and is needed to correctly resolve races should a thread exit while
+ in the middle of a locking or unlocking operation.
+
+Each 'lock entry' on the single linked list starting at 'head' consists
+of just a single word, pointing to the next 'lock entry', or back to
+'head' if there are no more entries. In addition, nearby to each 'lock
+entry', at an offset from the 'lock entry' specified by the 'offset'
+word, is one 'lock word'.
+
+The 'lock word' is always 32 bits, and is intended to be the same 32 bit
+lock variable used by the futex mechanism, in conjunction with
+robust_futexes. The kernel will only be able to wakeup the next thread
+waiting for a lock on a threads exit if that next thread used the futex
+mechanism to register the address of that 'lock word' with the kernel.
+
+For each futex lock currently held by a thread, if it wants this
+robust_futex support for exit cleanup of that lock, it should have one
+'lock entry' on this list, with its associated 'lock word' at the
+specified 'offset'. Should a thread die while holding any such locks,
+the kernel will walk this list, mark any such locks with a bit
+indicating their holder died, and wakeup the next thread waiting for
+that lock using the futex mechanism.
+
+When a thread has invoked the above system call to indicate it
+anticipates using robust_futexes, the kernel stores the passed in 'head'
+pointer for that task. The task may retrieve that value later on by
+using the system call:
+
+ asmlinkage long
+ sys_get_robust_list(int pid, struct robust_list_head __user **head_ptr,
+ size_t __user *len_ptr);
+
+It is anticipated that threads will use robust_futexes embedded in
+larger, user level locking structures, one per lock. The kernel
+robust_futex mechanism doesn't care what else is in that structure, so
+long as the 'offset' to the 'lock word' is the same for all
+robust_futexes used by that thread. The thread should link those locks
+it currently holds using the 'lock entry' pointers. It may also have
+other links between the locks, such as the reverse side of a double
+linked list, but that doesn't matter to the kernel.
+
+By keeping its locks linked this way, on a list starting with a 'head'
+pointer known to the kernel, the kernel can provide to a thread the
+essential service available for robust_futexes, which is to help clean
+up locks held at the time of (a perhaps unexpectedly) exit.
+
+Actual locking and unlocking, during normal operations, is handled
+entirely by user level code in the contending threads, and by the
+existing futex mechanism to wait for, and wakeup, locks. The kernels
+only essential involvement in robust_futexes is to remember where the
+list 'head' is, and to walk the list on thread exit, handling locks
+still held by the departing thread, as described below.
+
+There may exist thousands of futex lock structures in a threads shared
+memory, on various data structures, at a given point in time. Only those
+lock structures for locks currently held by that thread should be on
+that thread's robust_futex linked lock list a given time.
+
+A given futex lock structure in a user shared memory region may be held
+at different times by any of the threads with access to that region. The
+thread currently holding such a lock, if any, is marked with the threads
+TID in the lower 29 bits of the 'lock word'.
+
+When adding or removing a lock from its list of held locks, in order for
+the kernel to correctly handle lock cleanup regardless of when the task
+exits (perhaps it gets an unexpected signal 9 in the middle of
+manipulating this list), the user code must observe the following
+protocol on 'lock entry' insertion and removal:
+
+On insertion:
+ 1) set the 'list_op_pending' word to the address of the 'lock word'
+ to be inserted,
+ 2) acquire the futex lock,
+ 3) add the lock entry, with its thread id (TID) in the bottom 29 bits
+ of the 'lock word', to the linked list starting at 'head', and
+ 4) clear the 'list_op_pending' word.
+
+On removal:
+ 1) set the 'list_op_pending' word to the address of the 'lock word'
+ to be removed,
+ 2) remove the lock entry for this lock from the 'head' list,
+ 2) release the futex lock, and
+ 2) clear the 'lock_op_pending' word.
+
+On exit, the kernel will consider the address stored in
+'list_op_pending' and the address of each 'lock word' found by walking
+the list starting at 'head'. For each such address, if the bottom 29
+bits of the 'lock word' at offset 'offset' from that address equals the
+exiting threads TID, then the kernel will do two things:
+
+ 1) if bit 31 (0x80000000) is set in that word, then attempt a futex
+ wakeup on that address, which will waken the next thread that has
+ used to the futex mechanism to wait on that address, and
+ 2) atomically set bit 30 (0x40000000) in the 'lock word'.
+
+In the above, bit 31 was set by futex waiters on that lock to indicate
+they were waiting, and bit 30 is set by the kernel to indicate that the
+lock owner died holding the lock.
+
+The kernel exit code will silently stop scanning the list further if at
+any point:
+
+ 1) the 'head' pointer or an subsequent linked list pointer
+ is not a valid address of a user space word
+ 2) the calculated location of the 'lock word' (address plus
+ 'offset') is not the valud address of a 32 bit user space
+ word
+ 3) if the list contains more than 1 million (subject to
+ future kernel configuration changes) elements.
+
+When the kernel sees a list entry whose 'lock word' doesn't have the
+current threads TID in the lower 29 bits, it does nothing with that
+entry, and goes on to the next entry.
+
+Bit 29 (0x20000000) of the 'lock word' is reserved for future use.
--- /dev/null
+Started by: Ingo Molnar <mingo@redhat.com>
+
+Background
+----------
+
+what are robust futexes? To answer that, we first need to understand
+what futexes are: normal futexes are special types of locks that in the
+noncontended case can be acquired/released from userspace without having
+to enter the kernel.
+
+A futex is in essence a user-space address, e.g. a 32-bit lock variable
+field. If userspace notices contention (the lock is already owned and
+someone else wants to grab it too) then the lock is marked with a value
+that says "there's a waiter pending", and the sys_futex(FUTEX_WAIT)
+syscall is used to wait for the other guy to release it. The kernel
+creates a 'futex queue' internally, so that it can later on match up the
+waiter with the waker - without them having to know about each other.
+When the owner thread releases the futex, it notices (via the variable
+value) that there were waiter(s) pending, and does the
+sys_futex(FUTEX_WAKE) syscall to wake them up. Once all waiters have
+taken and released the lock, the futex is again back to 'uncontended'
+state, and there's no in-kernel state associated with it. The kernel
+completely forgets that there ever was a futex at that address. This
+method makes futexes very lightweight and scalable.
+
+"Robustness" is about dealing with crashes while holding a lock: if a
+process exits prematurely while holding a pthread_mutex_t lock that is
+also shared with some other process (e.g. yum segfaults while holding a
+pthread_mutex_t, or yum is kill -9-ed), then waiters for that lock need
+to be notified that the last owner of the lock exited in some irregular
+way.
+
+To solve such types of problems, "robust mutex" userspace APIs were
+created: pthread_mutex_lock() returns an error value if the owner exits
+prematurely - and the new owner can decide whether the data protected by
+the lock can be recovered safely.
+
+There is a big conceptual problem with futex based mutexes though: it is
+the kernel that destroys the owner task (e.g. due to a SEGFAULT), but
+the kernel cannot help with the cleanup: if there is no 'futex queue'
+(and in most cases there is none, futexes being fast lightweight locks)
+then the kernel has no information to clean up after the held lock!
+Userspace has no chance to clean up after the lock either - userspace is
+the one that crashes, so it has no opportunity to clean up. Catch-22.
+
+In practice, when e.g. yum is kill -9-ed (or segfaults), a system reboot
+is needed to release that futex based lock. This is one of the leading
+bugreports against yum.
+
+To solve this problem, the traditional approach was to extend the vma
+(virtual memory area descriptor) concept to have a notion of 'pending
+robust futexes attached to this area'. This approach requires 3 new
+syscall variants to sys_futex(): FUTEX_REGISTER, FUTEX_DEREGISTER and
+FUTEX_RECOVER. At do_exit() time, all vmas are searched to see whether
+they have a robust_head set. This approach has two fundamental problems
+left:
+
+ - it has quite complex locking and race scenarios. The vma-based
+ approach had been pending for years, but they are still not completely
+ reliable.
+
+ - they have to scan _every_ vma at sys_exit() time, per thread!
+
+The second disadvantage is a real killer: pthread_exit() takes around 1
+microsecond on Linux, but with thousands (or tens of thousands) of vmas
+every pthread_exit() takes a millisecond or more, also totally
+destroying the CPU's L1 and L2 caches!
+
+This is very much noticeable even for normal process sys_exit_group()
+calls: the kernel has to do the vma scanning unconditionally! (this is
+because the kernel has no knowledge about how many robust futexes there
+are to be cleaned up, because a robust futex might have been registered
+in another task, and the futex variable might have been simply mmap()-ed
+into this process's address space).
+
+This huge overhead forced the creation of CONFIG_FUTEX_ROBUST so that
+normal kernels can turn it off, but worse than that: the overhead makes
+robust futexes impractical for any type of generic Linux distribution.
+
+So something had to be done.
+
+New approach to robust futexes
+------------------------------
+
+At the heart of this new approach there is a per-thread private list of
+robust locks that userspace is holding (maintained by glibc) - which
+userspace list is registered with the kernel via a new syscall [this
+registration happens at most once per thread lifetime]. At do_exit()
+time, the kernel checks this user-space list: are there any robust futex
+locks to be cleaned up?
+
+In the common case, at do_exit() time, there is no list registered, so
+the cost of robust futexes is just a simple current->robust_list != NULL
+comparison. If the thread has registered a list, then normally the list
+is empty. If the thread/process crashed or terminated in some incorrect
+way then the list might be non-empty: in this case the kernel carefully
+walks the list [not trusting it], and marks all locks that are owned by
+this thread with the FUTEX_OWNER_DEAD bit, and wakes up one waiter (if
+any).
+
+The list is guaranteed to be private and per-thread at do_exit() time,
+so it can be accessed by the kernel in a lockless way.
+
+There is one race possible though: since adding to and removing from the
+list is done after the futex is acquired by glibc, there is a few
+instructions window for the thread (or process) to die there, leaving
+the futex hung. To protect against this possibility, userspace (glibc)
+also maintains a simple per-thread 'list_op_pending' field, to allow the
+kernel to clean up if the thread dies after acquiring the lock, but just
+before it could have added itself to the list. Glibc sets this
+list_op_pending field before it tries to acquire the futex, and clears
+it after the list-add (or list-remove) has finished.
+
+That's all that is needed - all the rest of robust-futex cleanup is done
+in userspace [just like with the previous patches].
+
+Ulrich Drepper has implemented the necessary glibc support for this new
+mechanism, which fully enables robust mutexes.
+
+Key differences of this userspace-list based approach, compared to the
+vma based method:
+
+ - it's much, much faster: at thread exit time, there's no need to loop
+ over every vma (!), which the VM-based method has to do. Only a very
+ simple 'is the list empty' op is done.
+
+ - no VM changes are needed - 'struct address_space' is left alone.
+
+ - no registration of individual locks is needed: robust mutexes dont
+ need any extra per-lock syscalls. Robust mutexes thus become a very
+ lightweight primitive - so they dont force the application designer
+ to do a hard choice between performance and robustness - robust
+ mutexes are just as fast.
+
+ - no per-lock kernel allocation happens.
+
+ - no resource limits are needed.
+
+ - no kernel-space recovery call (FUTEX_RECOVER) is needed.
+
+ - the implementation and the locking is "obvious", and there are no
+ interactions with the VM.
+
+Performance
+-----------
+
+I have benchmarked the time needed for the kernel to process a list of 1
+million (!) held locks, using the new method [on a 2GHz CPU]:
+
+ - with FUTEX_WAIT set [contended mutex]: 130 msecs
+ - without FUTEX_WAIT set [uncontended mutex]: 30 msecs
+
+I have also measured an approach where glibc does the lock notification
+[which it currently does for !pshared robust mutexes], and that took 256
+msecs - clearly slower, due to the 1 million FUTEX_WAKE syscalls
+userspace had to do.
+
+(1 million held locks are unheard of - we expect at most a handful of
+locks to be held at a time. Nevertheless it's nice to know that this
+approach scales nicely.)
+
+Implementation details
+----------------------
+
+The patch adds two new syscalls: one to register the userspace list, and
+one to query the registered list pointer:
+
+ asmlinkage long
+ sys_set_robust_list(struct robust_list_head __user *head,
+ size_t len);
+
+ asmlinkage long
+ sys_get_robust_list(int pid, struct robust_list_head __user **head_ptr,
+ size_t __user *len_ptr);
+
+List registration is very fast: the pointer is simply stored in
+current->robust_list. [Note that in the future, if robust futexes become
+widespread, we could extend sys_clone() to register a robust-list head
+for new threads, without the need of another syscall.]
+
+So there is virtually zero overhead for tasks not using robust futexes,
+and even for robust futex users, there is only one extra syscall per
+thread lifetime, and the cleanup operation, if it happens, is fast and
+straightforward. The kernel doesnt have any internal distinction between
+robust and normal futexes.
+
+If a futex is found to be held at exit time, the kernel sets the
+following bit of the futex word:
+
+ #define FUTEX_OWNER_DIED 0x40000000
+
+and wakes up the next futex waiter (if any). User-space does the rest of
+the cleanup.
+
+Otherwise, robust futexes are acquired by glibc by putting the TID into
+the futex field atomically. Waiters set the FUTEX_WAITERS bit:
+
+ #define FUTEX_WAITERS 0x80000000
+
+and the remaining bits are for the TID.
+
+Testing, architecture support
+-----------------------------
+
+i've tested the new syscalls on x86 and x86_64, and have made sure the
+parsing of the userspace list is robust [ ;-) ] even if the list is
+deliberately corrupted.
+
+i386 and x86_64 syscalls are wired up at the moment, and Ulrich has
+tested the new glibc code (on x86_64 and i386), and it works for his
+robust-mutex testcases.
+
+All other architectures should build just fine too - but they wont have
+the new syscalls yet.
+
+Architectures need to implement the new futex_atomic_cmpxchg_inatomic()
+inline function before writing up the syscalls (that function returns
+-ENOSYS right now).
-This document gives a brief introduction to the caching
+ This document gives a brief introduction to the caching
mechanisms in the sunrpc layer that is used, in particular,
for NFS authentication.
- supporting 'NEGATIVE' as well as positive entries
- allowing an EXPIRED time on cache items, and removing
items after they expire, and are no longe in-use.
-
- Future code extensions are expect to handle
- making requests to user-space to fill in cache entries
- allowing user-space to directly set entries in the cache
- delaying RPC requests that depend on as-yet incomplete
cache entries, and replaying those requests when the cache entry
is complete.
- - maintaining last-access times on cache entries
- - clean out old entries when the caches become full
-
-The code for performing a cache lookup is also common, but in the form
-of a template. i.e. a #define.
-Each cache defines a lookup function by using the DefineCacheLookup
-macro, or the simpler DefineSimpleCacheLookup macro
+ - clean out old entries as they expire.
Creating a Cache
----------------
-1/ A cache needs a datum to cache. This is in the form of a
+1/ A cache needs a datum to store. This is in the form of a
structure definition that must contain a
struct cache_head
as an element, usually the first.
Each cache element is reference counted and contains
expiry and update times for use in cache management.
2/ A cache needs a "cache_detail" structure that
- describes the cache. This stores the hash table, and some
- parameters for cache management.
-3/ A cache needs a lookup function. This is created using
- the DefineCacheLookup macro. This lookup function is used both
- to find entries and to update entries. The normal mode for
- updating an entry is to replace the old entry with a new
- entry. However it is possible to allow update-in-place
- for those caches where it makes sense (no atomicity issues
- or indirect reference counting issue)
-4/ A cache needs to be registered using cache_register(). This
- includes in on a list of caches that will be regularly
- cleaned to discard old data. For this to work, some
- thread must periodically call cache_clean
-
+ describes the cache. This stores the hash table, some
+ parameters for cache management, and some operations detailing how
+ to work with particular cache items.
+ The operations requires are:
+ struct cache_head *alloc(void)
+ This simply allocates appropriate memory and returns
+ a pointer to the cache_detail embedded within the
+ structure
+ void cache_put(struct kref *)
+ This is called when the last reference to an item is
+ is dropped. The pointer passed is to the 'ref' field
+ in the cache_head. cache_put should release any
+ references create by 'cache_init' and, if CACHE_VALID
+ is set, any references created by cache_update.
+ It should then release the memory allocated by
+ 'alloc'.
+ int match(struct cache_head *orig, struct cache_head *new)
+ test if the keys in the two structures match. Return
+ 1 if they do, 0 if they don't.
+ void init(struct cache_head *orig, struct cache_head *new)
+ Set the 'key' fields in 'new' from 'orig'. This may
+ include taking references to shared objects.
+ void update(struct cache_head *orig, struct cache_head *new)
+ Set the 'content' fileds in 'new' from 'orig'.
+ int cache_show(struct seq_file *m, struct cache_detail *cd,
+ struct cache_head *h)
+ Optional. Used to provide a /proc file that lists the
+ contents of a cache. This should show one item,
+ usually on just one line.
+ int cache_request(struct cache_detail *cd, struct cache_head *h,
+ char **bpp, int *blen)
+ Format a request to be send to user-space for an item
+ to be instantiated. *bpp is a buffer of size *blen.
+ bpp should be moved forward over the encoded message,
+ and *blen should be reduced to show how much free
+ space remains. Return 0 on success or <0 if not
+ enough room or other problem.
+ int cache_parse(struct cache_detail *cd, char *buf, int len)
+ A message from user space has arrived to fill out a
+ cache entry. It is in 'buf' of length 'len'.
+ cache_parse should parse this, find the item in the
+ cache with sunrpc_cache_lookup, and update the item
+ with sunrpc_cache_update.
+
+
+3/ A cache needs to be registered using cache_register(). This
+ includes it on a list of caches that will be regularly
+ cleaned to discard old data.
+
Using a cache
-------------
-To find a value in a cache, call the lookup function passing it a the
-datum which contains key, and possibly content, and a flag saying
-whether to update the cache with new data from the datum. Depending
-on how the cache lookup function was defined, it may take an extra
-argument to identify the particular cache in question.
+To find a value in a cache, call sunrpc_cache_lookup passing a pointer
+to the cache_head in a sample item with the 'key' fields filled in.
+This will be passed to ->match to identify the target entry. If no
+entry is found, a new entry will be create, added to the cache, and
+marked as not containing valid data.
-Except in cases of kmalloc failure, the lookup function
-will return a new datum which will store the key and
-may contain valid content, or may not.
-This datum is typically passed to cache_check which determines the
-validity of the datum and may later initiate an upcall to fill
-in the data.
+The item returned is typically passed to cache_check which will check
+if the data is valid, and may initiate an up-call to get fresh data.
+cache_check will return -ENOENT in the entry is negative or if an up
+call is needed but not possible, -EAGAIN if an upcall is pending,
+or 0 if the data is valid;
cache_check can be passed a "struct cache_req *". This structure is
typically embedded in the actual request and can be used to create a
revisited (->revisit). It is expected that this method will
reschedule the request for processing.
+The value returned by sunrpc_cache_lookup can also be passed to
+sunrpc_cache_update to set the content for the item. A second item is
+passed which should hold the content. If the item found by _lookup
+has valid data, then it is discarded and a new item is created. This
+saves any user of an item from worrying about content changing while
+it is being inspected. If the item found by _lookup does not contain
+valid data, then the content is copied across and CACHE_VALID is set.
Populating a cache
------------------
expiry time should be set on that item.
Reading from a channel is a bit more interesting. When a cache
-lookup fail, or when it suceeds but finds an entry that may soon
-expiry, a request is lodged for that cache item to be updated by
+lookup fails, or when it succeeds but finds an entry that may soon
+expire, a request is lodged for that cache item to be updated by
user-space. These requests appear in the channel file.
Successive reads will return successive requests.
write a response
loop.
-If it dies and needs to be restarted, any requests that have not be
+If it dies and needs to be restarted, any requests that have not been
answered will still appear in the file and will be read by the new
instance of the helper.
takes a cache item and encodes a request into the buffer
provided.
-
Note: If a cache has no active readers on the channel, and has had not
active readers for more than 60 seconds, further requests will not be
-added to the channel but instead all looks that do not find a valid
+added to the channel but instead all lookups that do not find a valid
entry will fail. This is partly for backward compatibility: The
previous nfs exports table was deemed to be authoritative and a
failed lookup meant a definite 'no'.
-----------------------
While each cache is free to use it's own format for requests
-and responses over channel, the following is recommended are
+and responses over channel, the following is recommended as
appropriate and support routines are available to help:
Each request or response record should be printable ASCII
with precisely one newline character which should be at the end.
Fields within the record should be separated by spaces, normally one.
If spaces, newlines, or nul characters are needed in a field they
-much be quotes. two mechanisms are available:
+much be quoted. two mechanisms are available:
1/ If a field begins '\x' then it must contain an even number of
hex digits, and pairs of these digits provide the bytes in the
field.
2/ otherwise a \ in the field must be followed by 3 octal digits
which give the code for a byte. Other characters are treated
- as them selves. At the very least, space, newlines nul, and
+ as them selves. At the very least, space, newline, nul, and
'\' must be quoted in this way.
-
L: linux-kernel@vger.kernel.org
S: Maintained
+REAL TIME CLOCK (RTC) SUBSYSTEM
+P: Alessandro Zummo
+M: a.zummo@towertech.it
+L: linux-kernel@vger.kernel.org
+S: Maintained
+
REISERFS FILE SYSTEM
P: Hans Reiser
M: reiserfs-dev@namesys.com
#include <linux/root_dev.h>
#include <linux/initrd.h>
#include <linux/eisa.h>
+#include <linux/pfn.h>
#ifdef CONFIG_MAGIC_SYSRQ
#include <linux/sysrq.h>
#include <linux/reboot.h>
#include <asm/setup.h>
#include <asm/io.h>
-extern struct notifier_block *panic_notifier_list;
+extern struct atomic_notifier_head panic_notifier_list;
static int alpha_panic_event(struct notifier_block *, unsigned long, void *);
static struct notifier_block alpha_panic_block = {
alpha_panic_event,
request_resource(io, standard_io_resources+i);
}
-#define PFN_UP(x) (((x) + PAGE_SIZE-1) >> PAGE_SHIFT)
-#define PFN_DOWN(x) ((x) >> PAGE_SHIFT)
-#define PFN_PHYS(x) ((x) << PAGE_SHIFT)
#define PFN_MAX PFN_DOWN(0x80000000)
#define for_each_mem_cluster(memdesc, cluster, i) \
for ((cluster) = (memdesc)->cluster, (i) = 0; \
return 0;
}
-#undef PFN_UP
-#undef PFN_DOWN
-#undef PFN_PHYS
-#undef PFN_MAX
-
void __init
setup_arch(char **cmdline_p)
{
}
/* Register a call for panic conditions. */
- notifier_chain_register(&panic_notifier_list, &alpha_panic_block);
+ atomic_notifier_chain_register(&panic_notifier_list,
+ &alpha_panic_block);
#ifdef CONFIG_ALPHA_GENERIC
/* Assume that we've booted from SRM if we haven't booted from MILO.
if (!est_cycle_freq)
est_cycle_freq = validate_cc_value(calibrate_cc_with_pit());
- cc1 = rpcc_after_update_in_progress();
+ cc1 = rpcc();
/* Calibrate CPU clock -- attempt #2. */
if (!est_cycle_freq) {
+ cc1 = rpcc_after_update_in_progress();
cc2 = rpcc_after_update_in_progress();
est_cycle_freq = validate_cc_value(cc2 - cc1);
cc1 = cc2;
#include <linux/bootmem.h>
#include <linux/swap.h>
#include <linux/initrd.h>
+#include <linux/pfn.h>
#include <asm/hwrpb.h>
#include <asm/pgalloc.h>
#define DBGDCONT(args...)
#endif
-#define PFN_UP(x) (((x) + PAGE_SIZE-1) >> PAGE_SHIFT)
-#define PFN_DOWN(x) ((x) >> PAGE_SHIFT)
-#define PFN_PHYS(x) ((x) << PAGE_SHIFT)
#define for_each_mem_cluster(memdesc, cluster, i) \
for ((cluster) = (memdesc)->cluster, (i) = 0; \
(i) < (memdesc)->numclusters; (i)++, (cluster)++)
config ARM
bool
default y
+ select RTC_LIB
help
The ARM series is a line of low-power-consumption RISC chip designs
licensed by ARM Ltd and targeted at embedded applications and
help
Support for Intel's IXP2400/2800 (XScale) family of processors.
+config ARCH_IXP23XX
+ bool "IXP23XX-based"
+ select PCI
+ help
+ Support for Intel's IXP23xx (XScale) family of processors.
+
config ARCH_L7200
bool "LinkUp-L7200"
select FIQ
source "arch/arm/mach-ixp2000/Kconfig"
+source "arch/arm/mach-ixp23xx/Kconfig"
+
source "arch/arm/mach-pxa/Kconfig"
source "arch/arm/mach-sa1100/Kconfig"
if PCMCIA || ARCH_CLPS7500 || ARCH_IOP3XX || ARCH_IXP4XX \
|| ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC \
- || ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE
+ || ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE \
+ || ARCH_IXP23XX
source "drivers/ide/Kconfig"
endif
source "drivers/mmc/Kconfig"
+source "drivers/rtc/Kconfig"
+
endmenu
source "fs/Kconfig"
tune-$(CONFIG_CPU_SA110) :=-mtune=strongarm110
tune-$(CONFIG_CPU_SA1100) :=-mtune=strongarm1100
tune-$(CONFIG_CPU_XSCALE) :=$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
+tune-$(CONFIG_CPU_XSC3) :=$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
tune-$(CONFIG_CPU_V6) :=$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm)
ifeq ($(CONFIG_AEABI),y)
machine-$(CONFIG_ARCH_IOP3XX) := iop3xx
machine-$(CONFIG_ARCH_IXP4XX) := ixp4xx
machine-$(CONFIG_ARCH_IXP2000) := ixp2000
+ machine-$(CONFIG_ARCH_IXP23XX) := ixp23xx
machine-$(CONFIG_ARCH_OMAP1) := omap1
machine-$(CONFIG_ARCH_OMAP2) := omap2
incdir-$(CONFIG_ARCH_OMAP) := omap
OBJS += head-at91rm9200.o
endif
-ifeq ($(CONFIG_DEBUG_ICEDCC),y)
-OBJS += ice-dcc.o
-endif
-
ifeq ($(CONFIG_CPU_BIG_ENDIAN),y)
OBJS += big-endian.o
endif
+++ /dev/null
-
-
- .text
-
- .global icedcc_putc
-
-icedcc_putc:
- mov r2, #0x4000000
-1:
- subs r2, r2, #1
- movlt pc, r14
- mrc p14, 0, r1, c0, c0, 0
- tst r1, #2
- bne 1b
-
- mcr p14, 0, r0, c1, c0, 0
- mov pc, r14
#include <linux/string.h>
-#include <asm/arch/uncompress.h>
-
#ifdef STANDALONE_DEBUG
#define putstr printf
-#endif
+#else
+
+static void putstr(const char *ptr);
+
+#include <linux/compiler.h>
+#include <asm/arch/uncompress.h>
#ifdef CONFIG_DEBUG_ICEDCC
-#define putstr icedcc_putstr
-#define putc icedcc_putc
+static void icedcc_putc(int ch)
+{
+ int status, i = 0x4000000;
-extern void icedcc_putc(int ch);
+ do {
+ if (--i < 0)
+ return;
-static void
-icedcc_putstr(const char *ptr)
+ asm("mrc p14, 0, %0, c0, c0, 0" : "=r" (status));
+ } while (status & 2);
+
+ asm("mcr p15, 0, %0, c1, c0, 0" : : "r" (ch));
+}
+
+#define putc(ch) icedcc_putc(ch)
+#define flush() do { } while (0)
+#endif
+
+static void putstr(const char *ptr)
{
- for (; *ptr != '\0'; ptr++) {
- icedcc_putc(*ptr);
+ char c;
+
+ while ((c = *ptr++) != '\0') {
+ if (c == '\n')
+ putc('\r');
+ putc(c);
}
+
+ flush();
}
#endif
#include <linux/capability.h>
#include <linux/device.h>
#include <linux/mutex.h>
+#include <linux/rtc.h>
#include <asm/rtc.h>
#include <asm/semaphore.h>
#define rtc_epoch 1900UL
-static const unsigned char days_in_month[] = {
- 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
-};
-
-#define LEAPS_THRU_END_OF(y) ((y)/4 - (y)/100 + (y)/400)
-#define LEAP_YEAR(year) ((!(year % 4) && (year % 100)) || !(year % 400))
-
-static int month_days(unsigned int month, unsigned int year)
-{
- return days_in_month[month] + (LEAP_YEAR(year) && month == 1);
-}
-
-/*
- * Convert seconds since 01-01-1970 00:00:00 to Gregorian date.
- */
-void rtc_time_to_tm(unsigned long time, struct rtc_time *tm)
-{
- int days, month, year;
-
- days = time / 86400;
- time -= days * 86400;
-
- tm->tm_wday = (days + 4) % 7;
-
- year = 1970 + days / 365;
- days -= (year - 1970) * 365
- + LEAPS_THRU_END_OF(year - 1)
- - LEAPS_THRU_END_OF(1970 - 1);
- if (days < 0) {
- year -= 1;
- days += 365 + LEAP_YEAR(year);
- }
- tm->tm_year = year - 1900;
- tm->tm_yday = days + 1;
-
- for (month = 0; month < 11; month++) {
- int newdays;
-
- newdays = days - month_days(month, year);
- if (newdays < 0)
- break;
- days = newdays;
- }
- tm->tm_mon = month;
- tm->tm_mday = days + 1;
-
- tm->tm_hour = time / 3600;
- time -= tm->tm_hour * 3600;
- tm->tm_min = time / 60;
- tm->tm_sec = time - tm->tm_min * 60;
-}
-EXPORT_SYMBOL(rtc_time_to_tm);
-
-/*
- * Does the rtc_time represent a valid date/time?
- */
-int rtc_valid_tm(struct rtc_time *tm)
-{
- if (tm->tm_year < 70 ||
- tm->tm_mon >= 12 ||
- tm->tm_mday < 1 ||
- tm->tm_mday > month_days(tm->tm_mon, tm->tm_year + 1900) ||
- tm->tm_hour >= 24 ||
- tm->tm_min >= 60 ||
- tm->tm_sec >= 60)
- return -EINVAL;
-
- return 0;
-}
-EXPORT_SYMBOL(rtc_valid_tm);
-
-/*
- * Convert Gregorian date to seconds since 01-01-1970 00:00:00.
- */
-int rtc_tm_to_time(struct rtc_time *tm, unsigned long *time)
-{
- *time = mktime(tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
- tm->tm_hour, tm->tm_min, tm->tm_sec);
-
- return 0;
-}
-EXPORT_SYMBOL(rtc_tm_to_time);
-
/*
* Calculate the next alarm time given the requested alarm time mask
* and the current time.
}
}
-static inline int rtc_read_time(struct rtc_ops *ops, struct rtc_time *tm)
+static inline int rtc_arm_read_time(struct rtc_ops *ops, struct rtc_time *tm)
{
memset(tm, 0, sizeof(struct rtc_time));
return ops->read_time(tm);
}
-static inline int rtc_set_time(struct rtc_ops *ops, struct rtc_time *tm)
+static inline int rtc_arm_set_time(struct rtc_ops *ops, struct rtc_time *tm)
{
int ret;
return ret;
}
-static inline int rtc_read_alarm(struct rtc_ops *ops, struct rtc_wkalrm *alrm)
+static inline int rtc_arm_read_alarm(struct rtc_ops *ops, struct rtc_wkalrm *alrm)
{
int ret = -EINVAL;
if (ops->read_alarm) {
return ret;
}
-static inline int rtc_set_alarm(struct rtc_ops *ops, struct rtc_wkalrm *alrm)
+static inline int rtc_arm_set_alarm(struct rtc_ops *ops, struct rtc_wkalrm *alrm)
{
int ret = -EINVAL;
if (ops->set_alarm)
switch (cmd) {
case RTC_ALM_READ:
- ret = rtc_read_alarm(ops, &alrm);
+ ret = rtc_arm_read_alarm(ops, &alrm);
if (ret)
break;
ret = copy_to_user(uarg, &alrm.time, sizeof(tm));
alrm.time.tm_wday = -1;
alrm.time.tm_yday = -1;
alrm.time.tm_isdst = -1;
- ret = rtc_set_alarm(ops, &alrm);
+ ret = rtc_arm_set_alarm(ops, &alrm);
break;
case RTC_RD_TIME:
- ret = rtc_read_time(ops, &tm);
+ ret = rtc_arm_read_time(ops, &tm);
if (ret)
break;
ret = copy_to_user(uarg, &tm, sizeof(tm));
ret = -EFAULT;
break;
}
- ret = rtc_set_time(ops, &tm);
+ ret = rtc_arm_set_time(ops, &tm);
break;
case RTC_EPOCH_SET:
ret = -EFAULT;
break;
}
- ret = rtc_set_alarm(ops, &alrm);
+ ret = rtc_arm_set_alarm(ops, &alrm);
break;
case RTC_WKALM_RD:
- ret = rtc_read_alarm(ops, &alrm);
+ ret = rtc_arm_read_alarm(ops, &alrm);
if (ret)
break;
ret = copy_to_user(uarg, &alrm, sizeof(alrm));
struct rtc_time tm;
char *p = page;
- if (rtc_read_time(ops, &tm) == 0) {
+ if (rtc_arm_read_time(ops, &tm) == 0) {
p += sprintf(p,
"rtc_time\t: %02d:%02d:%02d\n"
"rtc_date\t: %04d-%02d-%02d\n"
rtc_epoch);
}
- if (rtc_read_alarm(ops, &alrm) == 0) {
+ if (rtc_arm_read_alarm(ops, &alrm) == 0) {
p += sprintf(p, "alrm_time\t: ");
if ((unsigned int)alrm.time.tm_hour <= 24)
p += sprintf(p, "%02d:", alrm.time.tm_hour);
--- /dev/null
+#
+# Automatically generated make config: don't edit
+# Linux kernel version: 2.6.16
+# Tue Mar 21 03:27:20 2006
+#
+CONFIG_ARM=y
+CONFIG_MMU=y
+CONFIG_RWSEM_GENERIC_SPINLOCK=y
+CONFIG_GENERIC_CALIBRATE_DELAY=y
+
+#
+# Code maturity level options
+#
+CONFIG_EXPERIMENTAL=y
+CONFIG_BROKEN_ON_SMP=y
+CONFIG_INIT_ENV_ARG_LIMIT=32
+
+#
+# General setup
+#
+CONFIG_LOCALVERSION=""
+CONFIG_LOCALVERSION_AUTO=y
+CONFIG_SWAP=y
+CONFIG_SYSVIPC=y
+# CONFIG_POSIX_MQUEUE is not set
+CONFIG_BSD_PROCESS_ACCT=y
+# CONFIG_BSD_PROCESS_ACCT_V3 is not set
+CONFIG_SYSCTL=y
+# CONFIG_AUDIT is not set
+# CONFIG_IKCONFIG is not set
+CONFIG_INITRAMFS_SOURCE=""
+CONFIG_UID16=y
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
+CONFIG_EMBEDDED=y
+CONFIG_KALLSYMS=y
+# CONFIG_KALLSYMS_ALL is not set
+# CONFIG_KALLSYMS_EXTRA_PASS is not set
+CONFIG_HOTPLUG=y
+CONFIG_PRINTK=y
+CONFIG_BUG=y
+CONFIG_ELF_CORE=y
+CONFIG_BASE_FULL=y
+CONFIG_FUTEX=y
+CONFIG_EPOLL=y
+CONFIG_SHMEM=y
+CONFIG_CC_ALIGN_FUNCTIONS=0
+CONFIG_CC_ALIGN_LABELS=0
+CONFIG_CC_ALIGN_LOOPS=0
+CONFIG_CC_ALIGN_JUMPS=0
+CONFIG_SLAB=y
+# CONFIG_TINY_SHMEM is not set
+CONFIG_BASE_SMALL=0
+# CONFIG_SLOB is not set
+CONFIG_OBSOLETE_INTERMODULE=y
+
+#
+# Loadable module support
+#
+CONFIG_MODULES=y
+CONFIG_MODULE_UNLOAD=y
+# CONFIG_MODULE_FORCE_UNLOAD is not set
+CONFIG_OBSOLETE_MODPARM=y
+# CONFIG_MODVERSIONS is not set
+# CONFIG_MODULE_SRCVERSION_ALL is not set
+CONFIG_KMOD=y
+
+#
+# Block layer
+#
+
+#
+# IO Schedulers
+#
+CONFIG_IOSCHED_NOOP=y
+CONFIG_IOSCHED_AS=y
+CONFIG_IOSCHED_DEADLINE=y
+CONFIG_IOSCHED_CFQ=y
+CONFIG_DEFAULT_AS=y
+# CONFIG_DEFAULT_DEADLINE is not set
+# CONFIG_DEFAULT_CFQ is not set
+# CONFIG_DEFAULT_NOOP is not set
+CONFIG_DEFAULT_IOSCHED="anticipatory"
+
+#
+# System Type
+#
+# CONFIG_ARCH_CLPS7500 is not set
+# CONFIG_ARCH_CLPS711X is not set
+# CONFIG_ARCH_CO285 is not set
+# CONFIG_ARCH_EBSA110 is not set
+# CONFIG_ARCH_EP93XX is not set
+# CONFIG_ARCH_FOOTBRIDGE is not set
+# CONFIG_ARCH_INTEGRATOR is not set
+# CONFIG_ARCH_IOP3XX is not set
+# CONFIG_ARCH_IXP4XX is not set
+# CONFIG_ARCH_IXP2000 is not set
+CONFIG_ARCH_IXP23XX=y
+# CONFIG_ARCH_L7200 is not set
+# CONFIG_ARCH_PXA is not set
+# CONFIG_ARCH_RPC is not set
+# CONFIG_ARCH_SA1100 is not set
+# CONFIG_ARCH_S3C2410 is not set
+# CONFIG_ARCH_SHARK is not set
+# CONFIG_ARCH_LH7A40X is not set
+# CONFIG_ARCH_OMAP is not set
+# CONFIG_ARCH_VERSATILE is not set
+# CONFIG_ARCH_REALVIEW is not set
+# CONFIG_ARCH_IMX is not set
+# CONFIG_ARCH_H720X is not set
+# CONFIG_ARCH_AAEC2000 is not set
+# CONFIG_ARCH_AT91RM9200 is not set
+CONFIG_ARCH_SUPPORTS_BIG_ENDIAN=y
+
+#
+# Intel IXP23xx Implementation Options
+#
+
+#
+# IXP23xx Platforms
+#
+CONFIG_MACH_ESPRESSO=y
+CONFIG_MACH_IXDP2351=y
+CONFIG_MACH_ROADRUNNER=y
+
+#
+# Processor Type
+#
+CONFIG_CPU_32=y
+CONFIG_CPU_XSC3=y
+CONFIG_CPU_32v5=y
+CONFIG_CPU_ABRT_EV5T=y
+CONFIG_CPU_CACHE_VIVT=y
+CONFIG_CPU_TLB_V4WBI=y
+CONFIG_IO_36=y
+
+#
+# Processor Features
+#
+# CONFIG_ARM_THUMB is not set
+CONFIG_CPU_BIG_ENDIAN=y
+
+#
+# Bus support
+#
+CONFIG_PCI=y
+CONFIG_PCI_LEGACY_PROC=y
+# CONFIG_PCI_DEBUG is not set
+
+#
+# PCCARD (PCMCIA/CardBus) support
+#
+# CONFIG_PCCARD is not set
+
+#
+# Kernel Features
+#
+# CONFIG_PREEMPT is not set
+# CONFIG_NO_IDLE_HZ is not set
+CONFIG_HZ=100
+# CONFIG_AEABI is not set
+# CONFIG_ARCH_DISCONTIGMEM_ENABLE is not set
+CONFIG_SELECT_MEMORY_MODEL=y
+CONFIG_FLATMEM_MANUAL=y
+# CONFIG_DISCONTIGMEM_MANUAL is not set
+# CONFIG_SPARSEMEM_MANUAL is not set
+CONFIG_FLATMEM=y
+CONFIG_FLAT_NODE_MEM_MAP=y
+# CONFIG_SPARSEMEM_STATIC is not set
+CONFIG_SPLIT_PTLOCK_CPUS=4096
+CONFIG_ALIGNMENT_TRAP=y
+
+#
+# Boot options
+#
+CONFIG_ZBOOT_ROM_TEXT=0x0
+CONFIG_ZBOOT_ROM_BSS=0x0
+CONFIG_CMDLINE="console=ttyS0,115200 root=/dev/nfs ip=bootp"
+# CONFIG_XIP_KERNEL is not set
+
+#
+# Floating point emulation
+#
+
+#
+# At least one emulation must be selected
+#
+CONFIG_FPE_NWFPE=y
+CONFIG_FPE_NWFPE_XP=y
+# CONFIG_FPE_FASTFPE is not set
+
+#
+# Userspace binary formats
+#
+CONFIG_BINFMT_ELF=y
+# CONFIG_BINFMT_AOUT is not set
+# CONFIG_BINFMT_MISC is not set
+# CONFIG_ARTHUR is not set
+
+#
+# Power management options
+#
+# CONFIG_PM is not set
+# CONFIG_APM is not set
+
+#
+# Networking
+#
+CONFIG_NET=y
+
+#
+# Networking options
+#
+# CONFIG_NETDEBUG is not set
+CONFIG_PACKET=y
+CONFIG_PACKET_MMAP=y
+CONFIG_UNIX=y
+# CONFIG_NET_KEY is not set
+CONFIG_INET=y
+# CONFIG_IP_MULTICAST is not set
+# CONFIG_IP_ADVANCED_ROUTER is not set
+CONFIG_IP_FIB_HASH=y
+CONFIG_IP_PNP=y
+CONFIG_IP_PNP_DHCP=y
+CONFIG_IP_PNP_BOOTP=y
+# CONFIG_IP_PNP_RARP is not set
+# CONFIG_NET_IPIP is not set
+# CONFIG_NET_IPGRE is not set
+# CONFIG_ARPD is not set
+CONFIG_SYN_COOKIES=y
+# CONFIG_INET_AH is not set
+# CONFIG_INET_ESP is not set
+# CONFIG_INET_IPCOMP is not set
+# CONFIG_INET_TUNNEL is not set
+CONFIG_INET_DIAG=y
+CONFIG_INET_TCP_DIAG=y
+# CONFIG_TCP_CONG_ADVANCED is not set
+CONFIG_TCP_CONG_BIC=y
+# CONFIG_IPV6 is not set
+# CONFIG_NETFILTER is not set
+
+#
+# DCCP Configuration (EXPERIMENTAL)
+#
+# CONFIG_IP_DCCP is not set
+
+#
+# SCTP Configuration (EXPERIMENTAL)
+#
+# CONFIG_IP_SCTP is not set
+
+#
+# TIPC Configuration (EXPERIMENTAL)
+#
+# CONFIG_TIPC is not set
+# CONFIG_ATM is not set
+# CONFIG_BRIDGE is not set
+# CONFIG_VLAN_8021Q is not set
+# CONFIG_DECNET is not set
+# CONFIG_LLC2 is not set
+# CONFIG_IPX is not set
+# CONFIG_ATALK is not set
+# CONFIG_X25 is not set
+# CONFIG_LAPB is not set
+# CONFIG_NET_DIVERT is not set
+# CONFIG_ECONET is not set
+# CONFIG_WAN_ROUTER is not set
+
+#
+# QoS and/or fair queueing
+#
+# CONFIG_NET_SCHED is not set
+
+#
+# Network testing
+#
+# CONFIG_NET_PKTGEN is not set
+# CONFIG_HAMRADIO is not set
+# CONFIG_IRDA is not set
+# CONFIG_BT is not set
+# CONFIG_IEEE80211 is not set
+
+#
+# Device Drivers
+#
+
+#
+# Generic Driver Options
+#
+CONFIG_STANDALONE=y
+# CONFIG_PREVENT_FIRMWARE_BUILD is not set
+# CONFIG_FW_LOADER is not set
+# CONFIG_DEBUG_DRIVER is not set
+
+#
+# Connector - unified userspace <-> kernelspace linker
+#
+# CONFIG_CONNECTOR is not set
+
+#
+# Memory Technology Devices (MTD)
+#
+CONFIG_MTD=y
+# CONFIG_MTD_DEBUG is not set
+# CONFIG_MTD_CONCAT is not set
+CONFIG_MTD_PARTITIONS=y
+CONFIG_MTD_REDBOOT_PARTS=y
+CONFIG_MTD_REDBOOT_DIRECTORY_BLOCK=-1
+CONFIG_MTD_REDBOOT_PARTS_UNALLOCATED=y
+CONFIG_MTD_REDBOOT_PARTS_READONLY=y
+# CONFIG_MTD_CMDLINE_PARTS is not set
+# CONFIG_MTD_AFS_PARTS is not set
+
+#
+# User Modules And Translation Layers
+#
+CONFIG_MTD_CHAR=y
+CONFIG_MTD_BLOCK=y
+# CONFIG_FTL is not set
+# CONFIG_NFTL is not set
+# CONFIG_INFTL is not set
+# CONFIG_RFD_FTL is not set
+
+#
+# RAM/ROM/Flash chip drivers
+#
+CONFIG_MTD_CFI=y
+# CONFIG_MTD_JEDECPROBE is not set
+CONFIG_MTD_GEN_PROBE=y
+# CONFIG_MTD_CFI_ADV_OPTIONS is not set
+CONFIG_MTD_MAP_BANK_WIDTH_1=y
+CONFIG_MTD_MAP_BANK_WIDTH_2=y
+CONFIG_MTD_MAP_BANK_WIDTH_4=y
+# CONFIG_MTD_MAP_BANK_WIDTH_8 is not set
+# CONFIG_MTD_MAP_BANK_WIDTH_16 is not set
+# CONFIG_MTD_MAP_BANK_WIDTH_32 is not set
+CONFIG_MTD_CFI_I1=y
+CONFIG_MTD_CFI_I2=y
+# CONFIG_MTD_CFI_I4 is not set
+# CONFIG_MTD_CFI_I8 is not set
+CONFIG_MTD_CFI_INTELEXT=y
+# CONFIG_MTD_CFI_AMDSTD is not set
+# CONFIG_MTD_CFI_STAA is not set
+CONFIG_MTD_CFI_UTIL=y
+# CONFIG_MTD_RAM is not set
+# CONFIG_MTD_ROM is not set
+# CONFIG_MTD_ABSENT is not set
+# CONFIG_MTD_OBSOLETE_CHIPS is not set
+
+#
+# Mapping drivers for chip access
+#
+CONFIG_MTD_COMPLEX_MAPPINGS=y
+CONFIG_MTD_PHYSMAP=y
+CONFIG_MTD_PHYSMAP_START=0x0
+CONFIG_MTD_PHYSMAP_LEN=0x0
+CONFIG_MTD_PHYSMAP_BANKWIDTH=1
+# CONFIG_MTD_ARM_INTEGRATOR is not set
+# CONFIG_MTD_PCI is not set
+# CONFIG_MTD_PLATRAM is not set
+
+#
+# Self-contained MTD device drivers
+#
+# CONFIG_MTD_PMC551 is not set
+# CONFIG_MTD_SLRAM is not set
+# CONFIG_MTD_PHRAM is not set
+# CONFIG_MTD_MTDRAM is not set
+# CONFIG_MTD_BLKMTD is not set
+# CONFIG_MTD_BLOCK2MTD is not set
+
+#
+# Disk-On-Chip Device Drivers
+#
+# CONFIG_MTD_DOC2000 is not set
+# CONFIG_MTD_DOC2001 is not set
+# CONFIG_MTD_DOC2001PLUS is not set
+
+#
+# NAND Flash Device Drivers
+#
+# CONFIG_MTD_NAND is not set
+
+#
+# OneNAND Flash Device Drivers
+#
+# CONFIG_MTD_ONENAND is not set
+
+#
+# Parallel port support
+#
+# CONFIG_PARPORT is not set
+
+#
+# Plug and Play support
+#
+
+#
+# Block devices
+#
+# CONFIG_BLK_CPQ_DA is not set
+# CONFIG_BLK_CPQ_CISS_DA is not set
+# CONFIG_BLK_DEV_DAC960 is not set
+# CONFIG_BLK_DEV_UMEM is not set
+# CONFIG_BLK_DEV_COW_COMMON is not set
+CONFIG_BLK_DEV_LOOP=y
+# CONFIG_BLK_DEV_CRYPTOLOOP is not set
+# CONFIG_BLK_DEV_NBD is not set
+# CONFIG_BLK_DEV_SX8 is not set
+# CONFIG_BLK_DEV_UB is not set
+CONFIG_BLK_DEV_RAM=y
+CONFIG_BLK_DEV_RAM_COUNT=16
+CONFIG_BLK_DEV_RAM_SIZE=8192
+CONFIG_BLK_DEV_INITRD=y
+# CONFIG_CDROM_PKTCDVD is not set
+# CONFIG_ATA_OVER_ETH is not set
+
+#
+# ATA/ATAPI/MFM/RLL support
+#
+CONFIG_IDE=y
+CONFIG_BLK_DEV_IDE=y
+
+#
+# Please see Documentation/ide.txt for help/info on IDE drives
+#
+# CONFIG_BLK_DEV_IDE_SATA is not set
+CONFIG_BLK_DEV_IDEDISK=y
+# CONFIG_IDEDISK_MULTI_MODE is not set
+# CONFIG_BLK_DEV_IDECD is not set
+# CONFIG_BLK_DEV_IDETAPE is not set
+# CONFIG_BLK_DEV_IDEFLOPPY is not set
+# CONFIG_BLK_DEV_IDESCSI is not set
+# CONFIG_IDE_TASK_IOCTL is not set
+
+#
+# IDE chipset support/bugfixes
+#
+CONFIG_IDE_GENERIC=y
+CONFIG_BLK_DEV_IDEPCI=y
+# CONFIG_IDEPCI_SHARE_IRQ is not set
+# CONFIG_BLK_DEV_OFFBOARD is not set
+# CONFIG_BLK_DEV_GENERIC is not set
+# CONFIG_BLK_DEV_OPTI621 is not set
+# CONFIG_BLK_DEV_SL82C105 is not set
+CONFIG_BLK_DEV_IDEDMA_PCI=y
+# CONFIG_BLK_DEV_IDEDMA_FORCED is not set
+# CONFIG_IDEDMA_PCI_AUTO is not set
+# CONFIG_BLK_DEV_AEC62XX is not set
+# CONFIG_BLK_DEV_ALI15X3 is not set
+# CONFIG_BLK_DEV_AMD74XX is not set
+# CONFIG_BLK_DEV_CMD64X is not set
+# CONFIG_BLK_DEV_TRIFLEX is not set
+# CONFIG_BLK_DEV_CY82C693 is not set
+# CONFIG_BLK_DEV_CS5520 is not set
+# CONFIG_BLK_DEV_CS5530 is not set
+# CONFIG_BLK_DEV_HPT34X is not set
+# CONFIG_BLK_DEV_HPT366 is not set
+# CONFIG_BLK_DEV_SC1200 is not set
+# CONFIG_BLK_DEV_PIIX is not set
+# CONFIG_BLK_DEV_IT821X is not set
+# CONFIG_BLK_DEV_NS87415 is not set
+# CONFIG_BLK_DEV_PDC202XX_OLD is not set
+# CONFIG_BLK_DEV_PDC202XX_NEW is not set
+# CONFIG_BLK_DEV_SVWKS is not set
+CONFIG_BLK_DEV_SIIMAGE=y
+# CONFIG_BLK_DEV_SLC90E66 is not set
+# CONFIG_BLK_DEV_TRM290 is not set
+# CONFIG_BLK_DEV_VIA82CXXX is not set
+# CONFIG_IDE_ARM is not set
+CONFIG_BLK_DEV_IDEDMA=y
+# CONFIG_IDEDMA_IVB is not set
+# CONFIG_IDEDMA_AUTO is not set
+# CONFIG_BLK_DEV_HD is not set
+
+#
+# SCSI device support
+#
+# CONFIG_RAID_ATTRS is not set
+CONFIG_SCSI=y
+CONFIG_SCSI_PROC_FS=y
+
+#
+# SCSI support type (disk, tape, CD-ROM)
+#
+CONFIG_BLK_DEV_SD=y
+# CONFIG_CHR_DEV_ST is not set
+# CONFIG_CHR_DEV_OSST is not set
+# CONFIG_BLK_DEV_SR is not set
+# CONFIG_CHR_DEV_SG is not set
+# CONFIG_CHR_DEV_SCH is not set
+
+#
+# Some SCSI devices (e.g. CD jukebox) support multiple LUNs
+#
+# CONFIG_SCSI_MULTI_LUN is not set
+# CONFIG_SCSI_CONSTANTS is not set
+# CONFIG_SCSI_LOGGING is not set
+
+#
+# SCSI Transport Attributes
+#
+# CONFIG_SCSI_SPI_ATTRS is not set
+# CONFIG_SCSI_FC_ATTRS is not set
+# CONFIG_SCSI_ISCSI_ATTRS is not set
+# CONFIG_SCSI_SAS_ATTRS is not set
+
+#
+# SCSI low-level drivers
+#
+# CONFIG_ISCSI_TCP is not set
+# CONFIG_BLK_DEV_3W_XXXX_RAID is not set
+# CONFIG_SCSI_3W_9XXX is not set
+# CONFIG_SCSI_ACARD is not set
+# CONFIG_SCSI_AACRAID is not set
+# CONFIG_SCSI_AIC7XXX is not set
+# CONFIG_SCSI_AIC7XXX_OLD is not set
+# CONFIG_SCSI_AIC79XX is not set
+# CONFIG_SCSI_DPT_I2O is not set
+# CONFIG_MEGARAID_NEWGEN is not set
+# CONFIG_MEGARAID_LEGACY is not set
+# CONFIG_MEGARAID_SAS is not set
+# CONFIG_SCSI_SATA is not set
+# CONFIG_SCSI_DMX3191D is not set
+# CONFIG_SCSI_FUTURE_DOMAIN is not set
+# CONFIG_SCSI_IPS is not set
+# CONFIG_SCSI_INITIO is not set
+# CONFIG_SCSI_INIA100 is not set
+# CONFIG_SCSI_SYM53C8XX_2 is not set
+# CONFIG_SCSI_IPR is not set
+# CONFIG_SCSI_QLOGIC_FC is not set
+# CONFIG_SCSI_QLOGIC_1280 is not set
+# CONFIG_SCSI_QLA_FC is not set
+# CONFIG_SCSI_LPFC is not set
+# CONFIG_SCSI_DC395x is not set
+# CONFIG_SCSI_DC390T is not set
+# CONFIG_SCSI_NSP32 is not set
+# CONFIG_SCSI_DEBUG is not set
+
+#
+# Multi-device support (RAID and LVM)
+#
+# CONFIG_MD is not set
+
+#
+# Fusion MPT device support
+#
+# CONFIG_FUSION is not set
+# CONFIG_FUSION_SPI is not set
+# CONFIG_FUSION_FC is not set
+# CONFIG_FUSION_SAS is not set
+
+#
+# IEEE 1394 (FireWire) support
+#
+# CONFIG_IEEE1394 is not set
+
+#
+# I2O device support
+#
+# CONFIG_I2O is not set
+
+#
+# Network device support
+#
+CONFIG_NETDEVICES=y
+CONFIG_DUMMY=y
+# CONFIG_BONDING is not set
+# CONFIG_EQUALIZER is not set
+# CONFIG_TUN is not set
+
+#
+# ARCnet devices
+#
+# CONFIG_ARCNET is not set
+
+#
+# PHY device support
+#
+# CONFIG_PHYLIB is not set
+
+#
+# Ethernet (10 or 100Mbit)
+#
+CONFIG_NET_ETHERNET=y
+CONFIG_MII=y
+# CONFIG_HAPPYMEAL is not set
+# CONFIG_SUNGEM is not set
+# CONFIG_CASSINI is not set
+# CONFIG_NET_VENDOR_3COM is not set
+# CONFIG_SMC91X is not set
+# CONFIG_DM9000 is not set
+
+#
+# Tulip family network device support
+#
+# CONFIG_NET_TULIP is not set
+# CONFIG_HP100 is not set
+CONFIG_NET_PCI=y
+# CONFIG_PCNET32 is not set
+# CONFIG_AMD8111_ETH is not set
+# CONFIG_ADAPTEC_STARFIRE is not set
+# CONFIG_B44 is not set
+# CONFIG_FORCEDETH is not set
+# CONFIG_CS89x0 is not set
+# CONFIG_DGRS is not set
+# CONFIG_EEPRO100 is not set
+CONFIG_E100=y
+# CONFIG_FEALNX is not set
+# CONFIG_NATSEMI is not set
+# CONFIG_NE2K_PCI is not set
+# CONFIG_8139CP is not set
+# CONFIG_8139TOO is not set
+# CONFIG_SIS900 is not set
+# CONFIG_EPIC100 is not set
+# CONFIG_SUNDANCE is not set
+# CONFIG_TLAN is not set
+# CONFIG_VIA_RHINE is not set
+
+#
+# Ethernet (1000 Mbit)
+#
+# CONFIG_ACENIC is not set
+# CONFIG_DL2K is not set
+CONFIG_E1000=y
+CONFIG_E1000_NAPI=y
+# CONFIG_E1000_DISABLE_PACKET_SPLIT is not set
+# CONFIG_NS83820 is not set
+# CONFIG_HAMACHI is not set
+# CONFIG_YELLOWFIN is not set
+# CONFIG_R8169 is not set
+# CONFIG_SIS190 is not set
+# CONFIG_SKGE is not set
+# CONFIG_SKY2 is not set
+# CONFIG_SK98LIN is not set
+# CONFIG_VIA_VELOCITY is not set
+# CONFIG_TIGON3 is not set
+# CONFIG_BNX2 is not set
+
+#
+# Ethernet (10000 Mbit)
+#
+# CONFIG_CHELSIO_T1 is not set
+# CONFIG_IXGB is not set
+# CONFIG_S2IO is not set
+
+#
+# Token Ring devices
+#
+# CONFIG_TR is not set
+
+#
+# Wireless LAN (non-hamradio)
+#
+# CONFIG_NET_RADIO is not set
+
+#
+# Wan interfaces
+#
+CONFIG_WAN=y
+# CONFIG_DSCC4 is not set
+# CONFIG_LANMEDIA is not set
+# CONFIG_SYNCLINK_SYNCPPP is not set
+CONFIG_HDLC=y
+CONFIG_HDLC_RAW=y
+# CONFIG_HDLC_RAW_ETH is not set
+CONFIG_HDLC_CISCO=y
+CONFIG_HDLC_FR=y
+CONFIG_HDLC_PPP=y
+
+#
+# X.25/LAPB support is disabled
+#
+# CONFIG_PCI200SYN is not set
+# CONFIG_WANXL is not set
+# CONFIG_PC300 is not set
+# CONFIG_FARSYNC is not set
+CONFIG_DLCI=y
+CONFIG_DLCI_COUNT=24
+CONFIG_DLCI_MAX=8
+# CONFIG_FDDI is not set
+# CONFIG_HIPPI is not set
+# CONFIG_PPP is not set
+# CONFIG_SLIP is not set
+# CONFIG_NET_FC is not set
+# CONFIG_SHAPER is not set
+# CONFIG_NETCONSOLE is not set
+# CONFIG_NETPOLL is not set
+# CONFIG_NET_POLL_CONTROLLER is not set
+
+#
+# ISDN subsystem
+#
+# CONFIG_ISDN is not set
+
+#
+# Input device support
+#
+CONFIG_INPUT=y
+
+#
+# Userland interfaces
+#
+CONFIG_INPUT_MOUSEDEV=y
+CONFIG_INPUT_MOUSEDEV_PSAUX=y
+CONFIG_INPUT_MOUSEDEV_SCREEN_X=1024
+CONFIG_INPUT_MOUSEDEV_SCREEN_Y=768
+# CONFIG_INPUT_JOYDEV is not set
+# CONFIG_INPUT_TSDEV is not set
+# CONFIG_INPUT_EVDEV is not set
+# CONFIG_INPUT_EVBUG is not set
+
+#
+# Input Device Drivers
+#
+# CONFIG_INPUT_KEYBOARD is not set
+# CONFIG_INPUT_MOUSE is not set
+# CONFIG_INPUT_JOYSTICK is not set
+# CONFIG_INPUT_TOUCHSCREEN is not set
+# CONFIG_INPUT_MISC is not set
+
+#
+# Hardware I/O ports
+#
+# CONFIG_SERIO is not set
+# CONFIG_GAMEPORT is not set
+
+#
+# Character devices
+#
+# CONFIG_VT is not set
+# CONFIG_SERIAL_NONSTANDARD is not set
+
+#
+# Serial drivers
+#
+CONFIG_SERIAL_8250=y
+CONFIG_SERIAL_8250_CONSOLE=y
+CONFIG_SERIAL_8250_NR_UARTS=4
+CONFIG_SERIAL_8250_RUNTIME_UARTS=4
+# CONFIG_SERIAL_8250_EXTENDED is not set
+
+#
+# Non-8250 serial port support
+#
+CONFIG_SERIAL_CORE=y
+CONFIG_SERIAL_CORE_CONSOLE=y
+# CONFIG_SERIAL_JSM is not set
+CONFIG_UNIX98_PTYS=y
+CONFIG_LEGACY_PTYS=y
+CONFIG_LEGACY_PTY_COUNT=256
+
+#
+# IPMI
+#
+# CONFIG_IPMI_HANDLER is not set
+
+#
+# Watchdog Cards
+#
+CONFIG_WATCHDOG=y
+# CONFIG_WATCHDOG_NOWAYOUT is not set
+
+#
+# Watchdog Device Drivers
+#
+# CONFIG_SOFT_WATCHDOG is not set
+
+#
+# PCI-based Watchdog Cards
+#
+# CONFIG_PCIPCWATCHDOG is not set
+# CONFIG_WDTPCI is not set
+
+#
+# USB-based Watchdog Cards
+#
+# CONFIG_USBPCWATCHDOG is not set
+# CONFIG_NVRAM is not set
+# CONFIG_RTC is not set
+# CONFIG_DTLK is not set
+# CONFIG_R3964 is not set
+# CONFIG_APPLICOM is not set
+
+#
+# Ftape, the floppy tape device driver
+#
+# CONFIG_DRM is not set
+# CONFIG_RAW_DRIVER is not set
+
+#
+# TPM devices
+#
+# CONFIG_TCG_TPM is not set
+# CONFIG_TELCLOCK is not set
+
+#
+# I2C support
+#
+CONFIG_I2C=y
+CONFIG_I2C_CHARDEV=y
+
+#
+# I2C Algorithms
+#
+CONFIG_I2C_ALGOBIT=y
+# CONFIG_I2C_ALGOPCF is not set
+# CONFIG_I2C_ALGOPCA is not set
+
+#
+# I2C Hardware Bus support
+#
+# CONFIG_I2C_ALI1535 is not set
+# CONFIG_I2C_ALI1563 is not set
+# CONFIG_I2C_ALI15X3 is not set
+# CONFIG_I2C_AMD756 is not set
+# CONFIG_I2C_AMD8111 is not set
+# CONFIG_I2C_I801 is not set
+# CONFIG_I2C_I810 is not set
+# CONFIG_I2C_PIIX4 is not set
+# CONFIG_I2C_NFORCE2 is not set
+# CONFIG_I2C_PARPORT_LIGHT is not set
+# CONFIG_I2C_PROSAVAGE is not set
+# CONFIG_I2C_SAVAGE4 is not set
+# CONFIG_SCx200_ACB is not set
+# CONFIG_I2C_SIS5595 is not set
+# CONFIG_I2C_SIS630 is not set
+# CONFIG_I2C_SIS96X is not set
+# CONFIG_I2C_STUB is not set
+# CONFIG_I2C_VIA is not set
+# CONFIG_I2C_VIAPRO is not set
+# CONFIG_I2C_VOODOO3 is not set
+# CONFIG_I2C_PCA_ISA is not set
+
+#
+# Miscellaneous I2C Chip support
+#
+# CONFIG_SENSORS_DS1337 is not set
+# CONFIG_SENSORS_DS1374 is not set
+CONFIG_SENSORS_EEPROM=y
+# CONFIG_SENSORS_PCF8574 is not set
+# CONFIG_SENSORS_PCA9539 is not set
+# CONFIG_SENSORS_PCF8591 is not set
+# CONFIG_SENSORS_RTC8564 is not set
+# CONFIG_SENSORS_MAX6875 is not set
+# CONFIG_RTC_X1205_I2C is not set
+# CONFIG_I2C_DEBUG_CORE is not set
+# CONFIG_I2C_DEBUG_ALGO is not set
+# CONFIG_I2C_DEBUG_BUS is not set
+# CONFIG_I2C_DEBUG_CHIP is not set
+
+#
+# SPI support
+#
+# CONFIG_SPI is not set
+# CONFIG_SPI_MASTER is not set
+
+#
+# Dallas's 1-wire bus
+#
+# CONFIG_W1 is not set
+
+#
+# Hardware Monitoring support
+#
+CONFIG_HWMON=y
+# CONFIG_HWMON_VID is not set
+# CONFIG_SENSORS_ADM1021 is not set
+# CONFIG_SENSORS_ADM1025 is not set
+# CONFIG_SENSORS_ADM1026 is not set
+# CONFIG_SENSORS_ADM1031 is not set
+# CONFIG_SENSORS_ADM9240 is not set
+# CONFIG_SENSORS_ASB100 is not set
+# CONFIG_SENSORS_ATXP1 is not set
+# CONFIG_SENSORS_DS1621 is not set
+# CONFIG_SENSORS_F71805F is not set
+# CONFIG_SENSORS_FSCHER is not set
+# CONFIG_SENSORS_FSCPOS is not set
+# CONFIG_SENSORS_GL518SM is not set
+# CONFIG_SENSORS_GL520SM is not set
+# CONFIG_SENSORS_IT87 is not set
+# CONFIG_SENSORS_LM63 is not set
+# CONFIG_SENSORS_LM75 is not set
+# CONFIG_SENSORS_LM77 is not set
+# CONFIG_SENSORS_LM78 is not set
+# CONFIG_SENSORS_LM80 is not set
+# CONFIG_SENSORS_LM83 is not set
+# CONFIG_SENSORS_LM85 is not set
+# CONFIG_SENSORS_LM87 is not set
+# CONFIG_SENSORS_LM90 is not set
+# CONFIG_SENSORS_LM92 is not set
+# CONFIG_SENSORS_MAX1619 is not set
+# CONFIG_SENSORS_PC87360 is not set
+# CONFIG_SENSORS_SIS5595 is not set
+# CONFIG_SENSORS_SMSC47M1 is not set
+# CONFIG_SENSORS_SMSC47B397 is not set
+# CONFIG_SENSORS_VIA686A is not set
+# CONFIG_SENSORS_VT8231 is not set
+# CONFIG_SENSORS_W83781D is not set
+# CONFIG_SENSORS_W83792D is not set
+# CONFIG_SENSORS_W83L785TS is not set
+# CONFIG_SENSORS_W83627HF is not set
+# CONFIG_SENSORS_W83627EHF is not set
+# CONFIG_HWMON_DEBUG_CHIP is not set
+
+#
+# Misc devices
+#
+
+#
+# Multimedia Capabilities Port drivers
+#
+
+#
+# Multimedia devices
+#
+# CONFIG_VIDEO_DEV is not set
+
+#
+# Digital Video Broadcasting Devices
+#
+# CONFIG_DVB is not set
+
+#
+# Graphics support
+#
+# CONFIG_FB is not set
+
+#
+# Sound
+#
+# CONFIG_SOUND is not set
+
+#
+# USB support
+#
+CONFIG_USB_ARCH_HAS_HCD=y
+CONFIG_USB_ARCH_HAS_OHCI=y
+CONFIG_USB=y
+# CONFIG_USB_DEBUG is not set
+
+#
+# Miscellaneous USB options
+#
+# CONFIG_USB_DEVICEFS is not set
+# CONFIG_USB_BANDWIDTH is not set
+# CONFIG_USB_DYNAMIC_MINORS is not set
+# CONFIG_USB_OTG is not set
+
+#
+# USB Host Controller Drivers
+#
+CONFIG_USB_EHCI_HCD=y
+# CONFIG_USB_EHCI_SPLIT_ISO is not set
+# CONFIG_USB_EHCI_ROOT_HUB_TT is not set
+# CONFIG_USB_ISP116X_HCD is not set
+CONFIG_USB_OHCI_HCD=y
+# CONFIG_USB_OHCI_BIG_ENDIAN is not set
+CONFIG_USB_OHCI_LITTLE_ENDIAN=y
+CONFIG_USB_UHCI_HCD=y
+# CONFIG_USB_SL811_HCD is not set
+
+#
+# USB Device Class drivers
+#
+# CONFIG_USB_ACM is not set
+# CONFIG_USB_PRINTER is not set
+
+#
+# NOTE: USB_STORAGE enables SCSI, and 'SCSI disk support'
+#
+
+#
+# may also be needed; see USB_STORAGE Help for more information
+#
+CONFIG_USB_STORAGE=y
+# CONFIG_USB_STORAGE_DEBUG is not set
+# CONFIG_USB_STORAGE_DATAFAB is not set
+# CONFIG_USB_STORAGE_FREECOM is not set
+# CONFIG_USB_STORAGE_ISD200 is not set
+# CONFIG_USB_STORAGE_DPCM is not set
+# CONFIG_USB_STORAGE_USBAT is not set
+# CONFIG_USB_STORAGE_SDDR09 is not set
+# CONFIG_USB_STORAGE_SDDR55 is not set
+# CONFIG_USB_STORAGE_JUMPSHOT is not set
+# CONFIG_USB_STORAGE_ALAUDA is not set
+# CONFIG_USB_LIBUSUAL is not set
+
+#
+# USB Input Devices
+#
+# CONFIG_USB_HID is not set
+
+#
+# USB HID Boot Protocol drivers
+#
+# CONFIG_USB_KBD is not set
+# CONFIG_USB_MOUSE is not set
+# CONFIG_USB_AIPTEK is not set
+# CONFIG_USB_WACOM is not set
+# CONFIG_USB_ACECAD is not set
+# CONFIG_USB_KBTAB is not set
+# CONFIG_USB_POWERMATE is not set
+# CONFIG_USB_MTOUCH is not set
+# CONFIG_USB_ITMTOUCH is not set
+# CONFIG_USB_EGALAX is not set
+# CONFIG_USB_YEALINK is not set
+# CONFIG_USB_XPAD is not set
+# CONFIG_USB_ATI_REMOTE is not set
+# CONFIG_USB_ATI_REMOTE2 is not set
+# CONFIG_USB_KEYSPAN_REMOTE is not set
+# CONFIG_USB_APPLETOUCH is not set
+
+#
+# USB Imaging devices
+#
+# CONFIG_USB_MDC800 is not set
+# CONFIG_USB_MICROTEK is not set
+
+#
+# USB Multimedia devices
+#
+# CONFIG_USB_DABUSB is not set
+
+#
+# Video4Linux support is needed for USB Multimedia device support
+#
+
+#
+# USB Network Adapters
+#
+# CONFIG_USB_CATC is not set
+# CONFIG_USB_KAWETH is not set
+# CONFIG_USB_PEGASUS is not set
+# CONFIG_USB_RTL8150 is not set
+# CONFIG_USB_USBNET is not set
+CONFIG_USB_MON=y
+
+#
+# USB port drivers
+#
+
+#
+# USB Serial Converter support
+#
+# CONFIG_USB_SERIAL is not set
+
+#
+# USB Miscellaneous drivers
+#
+# CONFIG_USB_EMI62 is not set
+# CONFIG_USB_EMI26 is not set
+# CONFIG_USB_AUERSWALD is not set
+# CONFIG_USB_RIO500 is not set
+# CONFIG_USB_LEGOTOWER is not set
+# CONFIG_USB_LCD is not set
+# CONFIG_USB_LED is not set
+# CONFIG_USB_CYTHERM is not set
+# CONFIG_USB_PHIDGETKIT is not set
+# CONFIG_USB_PHIDGETSERVO is not set
+# CONFIG_USB_IDMOUSE is not set
+# CONFIG_USB_SISUSBVGA is not set
+# CONFIG_USB_LD is not set
+
+#
+# USB DSL modem support
+#
+
+#
+# USB Gadget Support
+#
+# CONFIG_USB_GADGET is not set
+
+#
+# MMC/SD Card support
+#
+# CONFIG_MMC is not set
+
+#
+# File systems
+#
+CONFIG_EXT2_FS=y
+CONFIG_EXT2_FS_XATTR=y
+CONFIG_EXT2_FS_POSIX_ACL=y
+# CONFIG_EXT2_FS_SECURITY is not set
+# CONFIG_EXT2_FS_XIP is not set
+CONFIG_EXT3_FS=y
+CONFIG_EXT3_FS_XATTR=y
+CONFIG_EXT3_FS_POSIX_ACL=y
+# CONFIG_EXT3_FS_SECURITY is not set
+CONFIG_JBD=y
+# CONFIG_JBD_DEBUG is not set
+CONFIG_FS_MBCACHE=y
+# CONFIG_REISERFS_FS is not set
+# CONFIG_JFS_FS is not set
+CONFIG_FS_POSIX_ACL=y
+# CONFIG_XFS_FS is not set
+# CONFIG_OCFS2_FS is not set
+# CONFIG_MINIX_FS is not set
+# CONFIG_ROMFS_FS is not set
+CONFIG_INOTIFY=y
+# CONFIG_QUOTA is not set
+CONFIG_DNOTIFY=y
+# CONFIG_AUTOFS_FS is not set
+# CONFIG_AUTOFS4_FS is not set
+# CONFIG_FUSE_FS is not set
+
+#
+# CD-ROM/DVD Filesystems
+#
+# CONFIG_ISO9660_FS is not set
+# CONFIG_UDF_FS is not set
+
+#
+# DOS/FAT/NT Filesystems
+#
+CONFIG_FAT_FS=y
+CONFIG_MSDOS_FS=y
+# CONFIG_VFAT_FS is not set
+CONFIG_FAT_DEFAULT_CODEPAGE=437
+# CONFIG_NTFS_FS is not set
+
+#
+# Pseudo filesystems
+#
+CONFIG_PROC_FS=y
+CONFIG_SYSFS=y
+CONFIG_TMPFS=y
+# CONFIG_HUGETLB_PAGE is not set
+CONFIG_RAMFS=y
+# CONFIG_RELAYFS_FS is not set
+# CONFIG_CONFIGFS_FS is not set
+
+#
+# Miscellaneous filesystems
+#
+# CONFIG_ADFS_FS is not set
+# CONFIG_AFFS_FS is not set
+# CONFIG_HFS_FS is not set
+# CONFIG_HFSPLUS_FS is not set
+# CONFIG_BEFS_FS is not set
+# CONFIG_BFS_FS is not set
+# CONFIG_EFS_FS is not set
+# CONFIG_JFFS_FS is not set
+CONFIG_JFFS2_FS=y
+CONFIG_JFFS2_FS_DEBUG=0
+CONFIG_JFFS2_FS_WRITEBUFFER=y
+# CONFIG_JFFS2_SUMMARY is not set
+# CONFIG_JFFS2_COMPRESSION_OPTIONS is not set
+CONFIG_JFFS2_ZLIB=y
+CONFIG_JFFS2_RTIME=y
+# CONFIG_JFFS2_RUBIN is not set
+# CONFIG_CRAMFS is not set
+# CONFIG_VXFS_FS is not set
+# CONFIG_HPFS_FS is not set
+# CONFIG_QNX4FS_FS is not set
+# CONFIG_SYSV_FS is not set
+# CONFIG_UFS_FS is not set
+
+#
+# Network File Systems
+#
+CONFIG_NFS_FS=y
+CONFIG_NFS_V3=y
+# CONFIG_NFS_V3_ACL is not set
+# CONFIG_NFS_V4 is not set
+# CONFIG_NFS_DIRECTIO is not set
+# CONFIG_NFSD is not set
+CONFIG_ROOT_NFS=y
+CONFIG_LOCKD=y
+CONFIG_LOCKD_V4=y
+CONFIG_NFS_COMMON=y
+CONFIG_SUNRPC=y
+# CONFIG_RPCSEC_GSS_KRB5 is not set
+# CONFIG_RPCSEC_GSS_SPKM3 is not set
+# CONFIG_SMB_FS is not set
+# CONFIG_CIFS is not set
+# CONFIG_NCP_FS is not set
+# CONFIG_CODA_FS is not set
+# CONFIG_AFS_FS is not set
+# CONFIG_9P_FS is not set
+
+#
+# Partition Types
+#
+CONFIG_PARTITION_ADVANCED=y
+# CONFIG_ACORN_PARTITION is not set
+# CONFIG_OSF_PARTITION is not set
+# CONFIG_AMIGA_PARTITION is not set
+# CONFIG_ATARI_PARTITION is not set
+# CONFIG_MAC_PARTITION is not set
+CONFIG_MSDOS_PARTITION=y
+# CONFIG_BSD_DISKLABEL is not set
+# CONFIG_MINIX_SUBPARTITION is not set
+# CONFIG_SOLARIS_X86_PARTITION is not set
+# CONFIG_UNIXWARE_DISKLABEL is not set
+# CONFIG_LDM_PARTITION is not set
+# CONFIG_SGI_PARTITION is not set
+# CONFIG_ULTRIX_PARTITION is not set
+# CONFIG_SUN_PARTITION is not set
+# CONFIG_KARMA_PARTITION is not set
+# CONFIG_EFI_PARTITION is not set
+
+#
+# Native Language Support
+#
+CONFIG_NLS=y
+CONFIG_NLS_DEFAULT="iso8859-1"
+CONFIG_NLS_CODEPAGE_437=y
+# CONFIG_NLS_CODEPAGE_737 is not set
+# CONFIG_NLS_CODEPAGE_775 is not set
+# CONFIG_NLS_CODEPAGE_850 is not set
+# CONFIG_NLS_CODEPAGE_852 is not set
+# CONFIG_NLS_CODEPAGE_855 is not set
+# CONFIG_NLS_CODEPAGE_857 is not set
+# CONFIG_NLS_CODEPAGE_860 is not set
+# CONFIG_NLS_CODEPAGE_861 is not set
+# CONFIG_NLS_CODEPAGE_862 is not set
+# CONFIG_NLS_CODEPAGE_863 is not set
+# CONFIG_NLS_CODEPAGE_864 is not set
+# CONFIG_NLS_CODEPAGE_865 is not set
+# CONFIG_NLS_CODEPAGE_866 is not set
+# CONFIG_NLS_CODEPAGE_869 is not set
+# CONFIG_NLS_CODEPAGE_936 is not set
+# CONFIG_NLS_CODEPAGE_950 is not set
+# CONFIG_NLS_CODEPAGE_932 is not set
+# CONFIG_NLS_CODEPAGE_949 is not set
+# CONFIG_NLS_CODEPAGE_874 is not set
+# CONFIG_NLS_ISO8859_8 is not set
+# CONFIG_NLS_CODEPAGE_1250 is not set
+# CONFIG_NLS_CODEPAGE_1251 is not set
+# CONFIG_NLS_ASCII is not set
+# CONFIG_NLS_ISO8859_1 is not set
+# CONFIG_NLS_ISO8859_2 is not set
+# CONFIG_NLS_ISO8859_3 is not set
+# CONFIG_NLS_ISO8859_4 is not set
+# CONFIG_NLS_ISO8859_5 is not set
+# CONFIG_NLS_ISO8859_6 is not set
+# CONFIG_NLS_ISO8859_7 is not set
+# CONFIG_NLS_ISO8859_9 is not set
+# CONFIG_NLS_ISO8859_13 is not set
+# CONFIG_NLS_ISO8859_14 is not set
+# CONFIG_NLS_ISO8859_15 is not set
+# CONFIG_NLS_KOI8_R is not set
+# CONFIG_NLS_KOI8_U is not set
+# CONFIG_NLS_UTF8 is not set
+
+#
+# Profiling support
+#
+# CONFIG_PROFILING is not set
+
+#
+# Kernel hacking
+#
+# CONFIG_PRINTK_TIME is not set
+CONFIG_MAGIC_SYSRQ=y
+CONFIG_DEBUG_KERNEL=y
+CONFIG_LOG_BUF_SHIFT=14
+CONFIG_DETECT_SOFTLOCKUP=y
+# CONFIG_SCHEDSTATS is not set
+# CONFIG_DEBUG_SLAB is not set
+CONFIG_DEBUG_MUTEXES=y
+# CONFIG_DEBUG_SPINLOCK is not set
+# CONFIG_DEBUG_SPINLOCK_SLEEP is not set
+# CONFIG_DEBUG_KOBJECT is not set
+CONFIG_DEBUG_BUGVERBOSE=y
+# CONFIG_DEBUG_INFO is not set
+# CONFIG_DEBUG_FS is not set
+# CONFIG_DEBUG_VM is not set
+CONFIG_FRAME_POINTER=y
+CONFIG_FORCED_INLINING=y
+# CONFIG_RCU_TORTURE_TEST is not set
+CONFIG_DEBUG_USER=y
+# CONFIG_DEBUG_WAITQ is not set
+CONFIG_DEBUG_ERRORS=y
+CONFIG_DEBUG_LL=y
+# CONFIG_DEBUG_ICEDCC is not set
+
+#
+# Security options
+#
+# CONFIG_KEYS is not set
+# CONFIG_SECURITY is not set
+
+#
+# Cryptographic options
+#
+# CONFIG_CRYPTO is not set
+
+#
+# Hardware crypto devices
+#
+
+#
+# Library routines
+#
+# CONFIG_CRC_CCITT is not set
+# CONFIG_CRC16 is not set
+CONFIG_CRC32=y
+# CONFIG_LIBCRC32C is not set
+CONFIG_ZLIB_INFLATE=y
+CONFIG_ZLIB_DEFLATE=y
# the code in uaccess.S is not preemption safe and
# probably faster on ARMv3 only
-ifeq ($CONFIG_PREEMPT,y)
+ifeq ($(CONFIG_PREEMPT),y)
lib-y += copy_from_user.o copy_to_user.o
else
ifneq ($(CONFIG_CPU_32v3),y)
/*
- * Abort preanble and completion macros.
+ * Abort preamble and completion macros.
* If a fixup handler is required then those macros must surround it.
* It is assumed that the fixup code will handle the private part of
* the exit macro.
#include <linux/time.h>
#include <linux/timex.h>
#include <linux/delay.h>
+#include <linux/termios.h>
#include <linux/amba/bus.h>
+#include <linux/amba/serial.h>
#include <asm/types.h>
#include <asm/setup.h>
/*************************************************************************
* EP93xx peripheral handling
*************************************************************************/
+#define EP93XX_UART_MCR_OFFSET (0x0100)
+
+static void ep93xx_uart_set_mctrl(struct amba_device *dev,
+ void __iomem *base, unsigned int mctrl)
+{
+ unsigned int mcr;
+
+ mcr = 0;
+ if (!(mctrl & TIOCM_RTS))
+ mcr |= 2;
+ if (!(mctrl & TIOCM_DTR))
+ mcr |= 1;
+
+ __raw_writel(mcr, base + EP93XX_UART_MCR_OFFSET);
+}
+
+static struct amba_pl010_data ep93xx_uart_data = {
+ .set_mctrl = ep93xx_uart_set_mctrl,
+};
+
+static struct amba_device uart1_device = {
+ .dev = {
+ .bus_id = "apb:uart1",
+ .platform_data = &ep93xx_uart_data,
+ },
+ .res = {
+ .start = EP93XX_UART1_PHYS_BASE,
+ .end = EP93XX_UART1_PHYS_BASE + 0x0fff,
+ .flags = IORESOURCE_MEM,
+ },
+ .irq = { IRQ_EP93XX_UART1, NO_IRQ },
+ .periphid = 0x00041010,
+};
+
+static struct amba_device uart2_device = {
+ .dev = {
+ .bus_id = "apb:uart2",
+ .platform_data = &ep93xx_uart_data,
+ },
+ .res = {
+ .start = EP93XX_UART2_PHYS_BASE,
+ .end = EP93XX_UART2_PHYS_BASE + 0x0fff,
+ .flags = IORESOURCE_MEM,
+ },
+ .irq = { IRQ_EP93XX_UART2, NO_IRQ },
+ .periphid = 0x00041010,
+};
+
+static struct amba_device uart3_device = {
+ .dev = {
+ .bus_id = "apb:uart3",
+ .platform_data = &ep93xx_uart_data,
+ },
+ .res = {
+ .start = EP93XX_UART3_PHYS_BASE,
+ .end = EP93XX_UART3_PHYS_BASE + 0x0fff,
+ .flags = IORESOURCE_MEM,
+ },
+ .irq = { IRQ_EP93XX_UART3, NO_IRQ },
+ .periphid = 0x00041010,
+};
+
void __init ep93xx_init_devices(void)
{
unsigned int v;
v &= ~EP93XX_SYSCON_DEVICE_CONFIG_CRUNCH_ENABLE;
__raw_writel(0xaa, EP93XX_SYSCON_SWLOCK);
__raw_writel(v, EP93XX_SYSCON_DEVICE_CONFIG);
+
+ amba_device_register(&uart1_device, &iomem_resource);
+ amba_device_register(&uart2_device, &iomem_resource);
+ amba_device_register(&uart3_device, &iomem_resource);
}
static unsigned long __init get_isa_cmos_time(void)
{
unsigned int year, mon, day, hour, min, sec;
- int i;
// check to see if the RTC makes sense.....
if ((CMOS_READ(RTC_VALID) & RTC_VRT) == 0)
return mktime(1970, 1, 1, 0, 0, 0);
- /* The Linux interpretation of the CMOS clock register contents:
- * When the Update-In-Progress (UIP) flag goes from 1 to 0, the
- * RTC registers show the second which has precisely just started.
- * Let's hope other operating systems interpret the RTC the same way.
- */
- /* read RTC exactly on falling edge of update flag */
- for (i = 0 ; i < 1000000 ; i++) /* may take up to 1 second... */
- if (CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP)
- break;
-
- for (i = 0 ; i < 1000000 ; i++) /* must try at least 2.228 ms */
- if (!(CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP))
- break;
-
- do { /* Isn't this overkill ? UIP above should guarantee consistency */
+ do {
sec = CMOS_READ(RTC_SECONDS);
min = CMOS_READ(RTC_MINUTES);
hour = CMOS_READ(RTC_HOURS);
#include <linux/interrupt.h>
#include <linux/sched.h>
#include <linux/smp.h>
+#include <linux/termios.h>
#include <linux/amba/bus.h>
+#include <linux/amba/serial.h>
#include <asm/hardware.h>
#include <asm/irq.h>
#include "common.h"
+static struct amba_pl010_data integrator_uart_data;
+
static struct amba_device rtc_device = {
.dev = {
.bus_id = "mb:15",
static struct amba_device uart0_device = {
.dev = {
.bus_id = "mb:16",
+ .platform_data = &integrator_uart_data,
},
.res = {
.start = INTEGRATOR_UART0_BASE,
static struct amba_device uart1_device = {
.dev = {
.bus_id = "mb:17",
+ .platform_data = &integrator_uart_data,
},
.res = {
.start = INTEGRATOR_UART1_BASE,
arch_initcall(integrator_init);
+/*
+ * On the Integrator platform, the port RTS and DTR are provided by
+ * bits in the following SC_CTRLS register bits:
+ * RTS DTR
+ * UART0 7 6
+ * UART1 5 4
+ */
+#define SC_CTRLC (IO_ADDRESS(INTEGRATOR_SC_BASE) + INTEGRATOR_SC_CTRLC_OFFSET)
+#define SC_CTRLS (IO_ADDRESS(INTEGRATOR_SC_BASE) + INTEGRATOR_SC_CTRLS_OFFSET)
+
+static void integrator_uart_set_mctrl(struct amba_device *dev, void __iomem *base, unsigned int mctrl)
+{
+ unsigned int ctrls = 0, ctrlc = 0, rts_mask, dtr_mask;
+
+ if (dev == &uart0_device) {
+ rts_mask = 1 << 4;
+ dtr_mask = 1 << 5;
+ } else {
+ rts_mask = 1 << 6;
+ dtr_mask = 1 << 7;
+ }
+
+ if (mctrl & TIOCM_RTS)
+ ctrlc |= rts_mask;
+ else
+ ctrls |= rts_mask;
+
+ if (mctrl & TIOCM_DTR)
+ ctrlc |= dtr_mask;
+ else
+ ctrls |= dtr_mask;
+
+ __raw_writel(ctrls, SC_CTRLS);
+ __raw_writel(ctrlc, SC_CTRLC);
+}
+
+static struct amba_pl010_data integrator_uart_data = {
+ .set_mctrl = integrator_uart_set_mctrl,
+};
+
#define CM_CTRL IO_ADDRESS(INTEGRATOR_HDR_BASE) + INTEGRATOR_HDR_CTRL_OFFSET
static DEFINE_SPINLOCK(cm_lock);
return 1;
}
-static int rtc_read_alarm(struct rtc_wkalrm *alrm)
+static int integrator_rtc_read_alarm(struct rtc_wkalrm *alrm)
{
rtc_time_to_tm(readl(rtc_base + RTC_MR), &alrm->time);
return 0;
}
-static inline int rtc_set_alarm(struct rtc_wkalrm *alrm)
+static inline int integrator_rtc_set_alarm(struct rtc_wkalrm *alrm)
{
unsigned long time;
int ret;
return ret;
}
-static int rtc_read_time(struct rtc_time *tm)
+static int integrator_rtc_read_time(struct rtc_time *tm)
{
rtc_time_to_tm(readl(rtc_base + RTC_DR), tm);
return 0;
* edge of the 1Hz clock, we must write the time one second
* in advance.
*/
-static inline int rtc_set_time(struct rtc_time *tm)
+static inline int integrator_rtc_set_time(struct rtc_time *tm)
{
unsigned long time;
int ret;
static struct rtc_ops rtc_ops = {
.owner = THIS_MODULE,
- .read_time = rtc_read_time,
- .set_time = rtc_set_time,
- .read_alarm = rtc_read_alarm,
- .set_alarm = rtc_set_alarm,
+ .read_time = integrator_rtc_read_time,
+ .set_time = integrator_rtc_set_time,
+ .read_alarm = integrator_rtc_read_alarm,
+ .set_alarm = integrator_rtc_set_alarm,
};
static irqreturn_t arm_rtc_interrupt(int irq, void *dev_id,
--- /dev/null
+if ARCH_IXP23XX
+
+config ARCH_SUPPORTS_BIG_ENDIAN
+ bool
+ default y
+
+menu "Intel IXP23xx Implementation Options"
+
+comment "IXP23xx Platforms"
+
+config MACH_ESPRESSO
+ bool "Support IP Fabrics Double Espresso platform"
+ help
+
+config MACH_IXDP2351
+ bool "Support Intel IXDP2351 platform"
+ help
+
+config MACH_ROADRUNNER
+ bool "Support ADI RoadRunner platform"
+ help
+
+endmenu
+
+endif
--- /dev/null
+#
+# Makefile for the linux kernel.
+#
+obj-y := core.o pci.o
+obj-m :=
+obj-n :=
+obj- :=
+
+obj-$(CONFIG_MACH_ESPRESSO) += espresso.o
+obj-$(CONFIG_MACH_IXDP2351) += ixdp2351.o
+obj-$(CONFIG_MACH_ROADRUNNER) += roadrunner.o
--- /dev/null
+ zreladdr-y := 0x00008000
+params_phys-y := 0x00000100
--- /dev/null
+/*
+ * arch/arm/mach-ixp23xx/core.c
+ *
+ * Core routines for IXP23xx chips
+ *
+ * Author: Deepak Saxena <dsaxena@plexity.net>
+ *
+ * Copyright 2005 (c) MontaVista Software, Inc.
+ *
+ * Based on 2.4 code Copyright 2004 (c) Intel Corporation
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/spinlock.h>
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+#include <linux/serial.h>
+#include <linux/tty.h>
+#include <linux/bitops.h>
+#include <linux/serial.h>
+#include <linux/serial_8250.h>
+#include <linux/serial_core.h>
+#include <linux/device.h>
+#include <linux/mm.h>
+#include <linux/time.h>
+#include <linux/timex.h>
+
+#include <asm/types.h>
+#include <asm/setup.h>
+#include <asm/memory.h>
+#include <asm/hardware.h>
+#include <asm/mach-types.h>
+#include <asm/irq.h>
+#include <asm/system.h>
+#include <asm/tlbflush.h>
+#include <asm/pgtable.h>
+
+#include <asm/mach/map.h>
+#include <asm/mach/time.h>
+#include <asm/mach/irq.h>
+#include <asm/mach/arch.h>
+
+
+/*************************************************************************
+ * Chip specific mappings shared by all IXP23xx systems
+ *************************************************************************/
+static struct map_desc ixp23xx_io_desc[] __initdata = {
+ { /* XSI-CPP CSRs */
+ .virtual = IXP23XX_XSI2CPP_CSR_VIRT,
+ .pfn = __phys_to_pfn(IXP23XX_XSI2CPP_CSR_PHYS),
+ .length = IXP23XX_XSI2CPP_CSR_SIZE,
+ .type = MT_DEVICE,
+ }, { /* Expansion Bus Config */
+ .virtual = IXP23XX_EXP_CFG_VIRT,
+ .pfn = __phys_to_pfn(IXP23XX_EXP_CFG_PHYS),
+ .length = IXP23XX_EXP_CFG_SIZE,
+ .type = MT_DEVICE,
+ }, { /* UART, Interrupt ctrl, GPIO, timers, NPEs, MACS,.... */
+ .virtual = IXP23XX_PERIPHERAL_VIRT,
+ .pfn = __phys_to_pfn(IXP23XX_PERIPHERAL_PHYS),
+ .length = IXP23XX_PERIPHERAL_SIZE,
+ .type = MT_DEVICE,
+ }, { /* CAP CSRs */
+ .virtual = IXP23XX_CAP_CSR_VIRT,
+ .pfn = __phys_to_pfn(IXP23XX_CAP_CSR_PHYS),
+ .length = IXP23XX_CAP_CSR_SIZE,
+ .type = MT_DEVICE,
+ }, { /* MSF CSRs */
+ .virtual = IXP23XX_MSF_CSR_VIRT,
+ .pfn = __phys_to_pfn(IXP23XX_MSF_CSR_PHYS),
+ .length = IXP23XX_MSF_CSR_SIZE,
+ .type = MT_DEVICE,
+ }, { /* PCI I/O Space */
+ .virtual = IXP23XX_PCI_IO_VIRT,
+ .pfn = __phys_to_pfn(IXP23XX_PCI_IO_PHYS),
+ .length = IXP23XX_PCI_IO_SIZE,
+ .type = MT_DEVICE,
+ }, { /* PCI Config Space */
+ .virtual = IXP23XX_PCI_CFG_VIRT,
+ .pfn = __phys_to_pfn(IXP23XX_PCI_CFG_PHYS),
+ .length = IXP23XX_PCI_CFG_SIZE,
+ .type = MT_DEVICE,
+ }, { /* PCI local CFG CSRs */
+ .virtual = IXP23XX_PCI_CREG_VIRT,
+ .pfn = __phys_to_pfn(IXP23XX_PCI_CREG_PHYS),
+ .length = IXP23XX_PCI_CREG_SIZE,
+ .type = MT_DEVICE,
+ }, { /* PCI MEM Space */
+ .virtual = IXP23XX_PCI_MEM_VIRT,
+ .pfn = __phys_to_pfn(IXP23XX_PCI_MEM_PHYS),
+ .length = IXP23XX_PCI_MEM_SIZE,
+ .type = MT_DEVICE,
+ }
+};
+
+void __init ixp23xx_map_io(void)
+{
+ iotable_init(ixp23xx_io_desc, ARRAY_SIZE(ixp23xx_io_desc));
+}
+
+
+/***************************************************************************
+ * IXP23xx Interrupt Handling
+ ***************************************************************************/
+enum ixp23xx_irq_type {
+ IXP23XX_IRQ_LEVEL, IXP23XX_IRQ_EDGE
+};
+
+static void ixp23xx_config_irq(unsigned int, enum ixp23xx_irq_type);
+
+static int ixp23xx_irq_set_type(unsigned int irq, unsigned int type)
+{
+ int line = irq - IRQ_IXP23XX_GPIO6 + 6;
+ u32 int_style;
+ enum ixp23xx_irq_type irq_type;
+ volatile u32 *int_reg;
+
+ /*
+ * Only GPIOs 6-15 are wired to interrupts on IXP23xx
+ */
+ if (line < 6 || line > 15)
+ return -EINVAL;
+
+ switch (type) {
+ case IRQT_BOTHEDGE:
+ int_style = IXP23XX_GPIO_STYLE_TRANSITIONAL;
+ irq_type = IXP23XX_IRQ_EDGE;
+ break;
+ case IRQT_RISING:
+ int_style = IXP23XX_GPIO_STYLE_RISING_EDGE;
+ irq_type = IXP23XX_IRQ_EDGE;
+ break;
+ case IRQT_FALLING:
+ int_style = IXP23XX_GPIO_STYLE_FALLING_EDGE;
+ irq_type = IXP23XX_IRQ_EDGE;
+ break;
+ case IRQT_HIGH:
+ int_style = IXP23XX_GPIO_STYLE_ACTIVE_HIGH;
+ irq_type = IXP23XX_IRQ_LEVEL;
+ break;
+ case IRQT_LOW:
+ int_style = IXP23XX_GPIO_STYLE_ACTIVE_LOW;
+ irq_type = IXP23XX_IRQ_LEVEL;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ ixp23xx_config_irq(irq, irq_type);
+
+ if (line >= 8) { /* pins 8-15 */
+ line -= 8;
+ int_reg = (volatile u32 *)IXP23XX_GPIO_GPIT2R;
+ } else { /* pins 0-7 */
+ int_reg = (volatile u32 *)IXP23XX_GPIO_GPIT1R;
+ }
+
+ /*
+ * Clear pending interrupts
+ */
+ *IXP23XX_GPIO_GPISR = (1 << line);
+
+ /* Clear the style for the appropriate pin */
+ *int_reg &= ~(IXP23XX_GPIO_STYLE_MASK <<
+ (line * IXP23XX_GPIO_STYLE_SIZE));
+
+ /* Set the new style */
+ *int_reg |= (int_style << (line * IXP23XX_GPIO_STYLE_SIZE));
+
+ return 0;
+}
+
+static void ixp23xx_irq_mask(unsigned int irq)
+{
+ volatile unsigned long *intr_reg = IXP23XX_INTR_EN1 + (irq / 32);
+
+ *intr_reg &= ~(1 << (irq % 32));
+}
+
+static void ixp23xx_irq_ack(unsigned int irq)
+{
+ int line = irq - IRQ_IXP23XX_GPIO6 + 6;
+
+ if ((line < 6) || (line > 15))
+ return;
+
+ *IXP23XX_GPIO_GPISR = (1 << line);
+}
+
+/*
+ * Level triggered interrupts on GPIO lines can only be cleared when the
+ * interrupt condition disappears.
+ */
+static void ixp23xx_irq_level_unmask(unsigned int irq)
+{
+ volatile unsigned long *intr_reg = IXP23XX_INTR_EN1 + (irq / 32);
+
+ ixp23xx_irq_ack(irq);
+
+ *intr_reg |= (1 << (irq % 32));
+}
+
+static void ixp23xx_irq_edge_unmask(unsigned int irq)
+{
+ volatile unsigned long *intr_reg = IXP23XX_INTR_EN1 + (irq / 32);
+
+ *intr_reg |= (1 << (irq % 32));
+}
+
+static struct irqchip ixp23xx_irq_level_chip = {
+ .ack = ixp23xx_irq_mask,
+ .mask = ixp23xx_irq_mask,
+ .unmask = ixp23xx_irq_level_unmask,
+ .set_type = ixp23xx_irq_set_type
+};
+
+static struct irqchip ixp23xx_irq_edge_chip = {
+ .ack = ixp23xx_irq_ack,
+ .mask = ixp23xx_irq_mask,
+ .unmask = ixp23xx_irq_edge_unmask,
+ .set_type = ixp23xx_irq_set_type
+};
+
+static void ixp23xx_pci_irq_mask(unsigned int irq)
+{
+ *IXP23XX_PCI_XSCALE_INT_ENABLE &= ~(1 << (IRQ_IXP23XX_INTA + 27 - irq));
+}
+
+static void ixp23xx_pci_irq_unmask(unsigned int irq)
+{
+ *IXP23XX_PCI_XSCALE_INT_ENABLE |= (1 << (IRQ_IXP23XX_INTA + 27 - irq));
+}
+
+/*
+ * TODO: Should this just be done at ASM level?
+ */
+static void pci_handler(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs)
+{
+ u32 pci_interrupt;
+ unsigned int irqno;
+ struct irqdesc *int_desc;
+
+ pci_interrupt = *IXP23XX_PCI_XSCALE_INT_STATUS;
+
+ desc->chip->ack(irq);
+
+ /* See which PCI_INTA, or PCI_INTB interrupted */
+ if (pci_interrupt & (1 << 26)) {
+ irqno = IRQ_IXP23XX_INTB;
+ } else if (pci_interrupt & (1 << 27)) {
+ irqno = IRQ_IXP23XX_INTA;
+ } else {
+ BUG();
+ }
+
+ int_desc = irq_desc + irqno;
+ int_desc->handle(irqno, int_desc, regs);
+
+ desc->chip->unmask(irq);
+}
+
+static struct irqchip ixp23xx_pci_irq_chip = {
+ .ack = ixp23xx_pci_irq_mask,
+ .mask = ixp23xx_pci_irq_mask,
+ .unmask = ixp23xx_pci_irq_unmask
+};
+
+static void ixp23xx_config_irq(unsigned int irq, enum ixp23xx_irq_type type)
+{
+ switch (type) {
+ case IXP23XX_IRQ_LEVEL:
+ set_irq_chip(irq, &ixp23xx_irq_level_chip);
+ set_irq_handler(irq, do_level_IRQ);
+ break;
+ case IXP23XX_IRQ_EDGE:
+ set_irq_chip(irq, &ixp23xx_irq_edge_chip);
+ set_irq_handler(irq, do_edge_IRQ);
+ break;
+ }
+ set_irq_flags(irq, IRQF_VALID);
+}
+
+void __init ixp23xx_init_irq(void)
+{
+ int irq;
+
+ /* Route everything to IRQ */
+ *IXP23XX_INTR_SEL1 = 0x0;
+ *IXP23XX_INTR_SEL2 = 0x0;
+ *IXP23XX_INTR_SEL3 = 0x0;
+ *IXP23XX_INTR_SEL4 = 0x0;
+
+ /* Mask all sources */
+ *IXP23XX_INTR_EN1 = 0x0;
+ *IXP23XX_INTR_EN2 = 0x0;
+ *IXP23XX_INTR_EN3 = 0x0;
+ *IXP23XX_INTR_EN4 = 0x0;
+
+ /*
+ * Configure all IRQs for level-sensitive operation
+ */
+ for (irq = 0; irq <= NUM_IXP23XX_RAW_IRQS; irq++) {
+ ixp23xx_config_irq(irq, IXP23XX_IRQ_LEVEL);
+ }
+
+ for (irq = IRQ_IXP23XX_INTA; irq <= IRQ_IXP23XX_INTB; irq++) {
+ set_irq_chip(irq, &ixp23xx_pci_irq_chip);
+ set_irq_handler(irq, do_level_IRQ);
+ set_irq_flags(irq, IRQF_VALID);
+ }
+
+ set_irq_chained_handler(IRQ_IXP23XX_PCI_INT_RPH, pci_handler);
+}
+
+
+/*************************************************************************
+ * Timer-tick functions for IXP23xx
+ *************************************************************************/
+#define CLOCK_TICKS_PER_USEC CLOCK_TICK_RATE / (USEC_PER_SEC)
+
+static unsigned long next_jiffy_time;
+
+static unsigned long
+ixp23xx_gettimeoffset(void)
+{
+ unsigned long elapsed;
+
+ elapsed = *IXP23XX_TIMER_CONT - (next_jiffy_time - LATCH);
+
+ return elapsed / CLOCK_TICKS_PER_USEC;
+}
+
+static irqreturn_t
+ixp23xx_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+ /* Clear Pending Interrupt by writing '1' to it */
+ *IXP23XX_TIMER_STATUS = IXP23XX_TIMER1_INT_PEND;
+ while ((*IXP23XX_TIMER_CONT - next_jiffy_time) > LATCH) {
+ timer_tick(regs);
+ next_jiffy_time += LATCH;
+ }
+
+ return IRQ_HANDLED;
+}
+
+static struct irqaction ixp23xx_timer_irq = {
+ .name = "IXP23xx Timer Tick",
+ .handler = ixp23xx_timer_interrupt,
+ .flags = SA_INTERRUPT | SA_TIMER,
+};
+
+void __init ixp23xx_init_timer(void)
+{
+ /* Clear Pending Interrupt by writing '1' to it */
+ *IXP23XX_TIMER_STATUS = IXP23XX_TIMER1_INT_PEND;
+
+ /* Setup the Timer counter value */
+ *IXP23XX_TIMER1_RELOAD =
+ (LATCH & ~IXP23XX_TIMER_RELOAD_MASK) | IXP23XX_TIMER_ENABLE;
+
+ *IXP23XX_TIMER_CONT = 0;
+ next_jiffy_time = LATCH;
+
+ /* Connect the interrupt handler and enable the interrupt */
+ setup_irq(IRQ_IXP23XX_TIMER1, &ixp23xx_timer_irq);
+}
+
+struct sys_timer ixp23xx_timer = {
+ .init = ixp23xx_init_timer,
+ .offset = ixp23xx_gettimeoffset,
+};
+
+
+/*************************************************************************
+ * IXP23xx Platform Initializaion
+ *************************************************************************/
+static struct resource ixp23xx_uart_resources[] = {
+ {
+ .start = IXP23XX_UART1_PHYS,
+ .end = IXP23XX_UART1_PHYS + 0x0fff,
+ .flags = IORESOURCE_MEM
+ }, {
+ .start = IXP23XX_UART2_PHYS,
+ .end = IXP23XX_UART2_PHYS + 0x0fff,
+ .flags = IORESOURCE_MEM
+ }
+};
+
+static struct plat_serial8250_port ixp23xx_uart_data[] = {
+ {
+ .mapbase = IXP23XX_UART1_PHYS,
+ .membase = (char *)(IXP23XX_UART1_VIRT + 3),
+ .irq = IRQ_IXP23XX_UART1,
+ .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
+ .iotype = UPIO_MEM,
+ .regshift = 2,
+ .uartclk = IXP23XX_UART_XTAL,
+ }, {
+ .mapbase = IXP23XX_UART2_PHYS,
+ .membase = (char *)(IXP23XX_UART2_VIRT + 3),
+ .irq = IRQ_IXP23XX_UART2,
+ .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
+ .iotype = UPIO_MEM,
+ .regshift = 2,
+ .uartclk = IXP23XX_UART_XTAL,
+ },
+ { },
+};
+
+static struct platform_device ixp23xx_uart = {
+ .name = "serial8250",
+ .id = 0,
+ .dev.platform_data = ixp23xx_uart_data,
+ .num_resources = 2,
+ .resource = ixp23xx_uart_resources,
+};
+
+static struct platform_device *ixp23xx_devices[] __initdata = {
+ &ixp23xx_uart,
+};
+
+void __init ixp23xx_sys_init(void)
+{
+ platform_add_devices(ixp23xx_devices, ARRAY_SIZE(ixp23xx_devices));
+}
--- /dev/null
+/*
+ * arch/arm/mach-ixp23xx/espresso.c
+ *
+ * Double Espresso-specific routines
+ *
+ * Author: Lennert Buytenhek <buytenh@wantstofly.org>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/spinlock.h>
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+#include <linux/serial.h>
+#include <linux/tty.h>
+#include <linux/bitops.h>
+#include <linux/ioport.h>
+#include <linux/serial.h>
+#include <linux/serial_8250.h>
+#include <linux/serial_core.h>
+#include <linux/device.h>
+#include <linux/mm.h>
+#include <linux/pci.h>
+#include <linux/mtd/physmap.h>
+
+#include <asm/types.h>
+#include <asm/setup.h>
+#include <asm/memory.h>
+#include <asm/hardware.h>
+#include <asm/mach-types.h>
+#include <asm/irq.h>
+#include <asm/system.h>
+#include <asm/tlbflush.h>
+#include <asm/pgtable.h>
+
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/irq.h>
+#include <asm/mach/pci.h>
+
+static void __init espresso_init(void)
+{
+ physmap_configure(0x90000000, 0x02000000, 2, NULL);
+
+ /*
+ * Mark flash as writeable.
+ */
+ IXP23XX_EXP_CS0[0] |= IXP23XX_FLASH_WRITABLE;
+ IXP23XX_EXP_CS0[1] |= IXP23XX_FLASH_WRITABLE;
+
+ ixp23xx_sys_init();
+}
+
+MACHINE_START(ESPRESSO, "IP Fabrics Double Espresso")
+ /* Maintainer: Lennert Buytenhek */
+ .phys_io = IXP23XX_PERIPHERAL_PHYS,
+ .io_pg_offst = ((IXP23XX_PERIPHERAL_VIRT >> 18)) & 0xfffc,
+ .map_io = ixp23xx_map_io,
+ .init_irq = ixp23xx_init_irq,
+ .timer = &ixp23xx_timer,
+ .boot_params = 0x00000100,
+ .init_machine = espresso_init,
+MACHINE_END
--- /dev/null
+/*
+ * arch/arm/mach-ixp23xx/ixdp2351.c
+ *
+ * IXDP2351 board-specific routines
+ *
+ * Author: Deepak Saxena <dsaxena@plexity.net>
+ *
+ * Copyright 2005 (c) MontaVista Software, Inc.
+ *
+ * Based on 2.4 code Copyright 2004 (c) Intel Corporation
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/spinlock.h>
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+#include <linux/serial.h>
+#include <linux/tty.h>
+#include <linux/bitops.h>
+#include <linux/ioport.h>
+#include <linux/serial.h>
+#include <linux/serial_8250.h>
+#include <linux/serial_core.h>
+#include <linux/device.h>
+#include <linux/mm.h>
+#include <linux/pci.h>
+#include <linux/mtd/physmap.h>
+
+#include <asm/types.h>
+#include <asm/setup.h>
+#include <asm/memory.h>
+#include <asm/hardware.h>
+#include <asm/mach-types.h>
+#include <asm/irq.h>
+#include <asm/system.h>
+#include <asm/tlbflush.h>
+#include <asm/pgtable.h>
+
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/irq.h>
+#include <asm/mach/pci.h>
+
+/*
+ * IXDP2351 Interrupt Handling
+ */
+static void ixdp2351_inta_mask(unsigned int irq)
+{
+ *IXDP2351_CPLD_INTA_MASK_SET_REG = IXDP2351_INTA_IRQ_MASK(irq);
+}
+
+static void ixdp2351_inta_unmask(unsigned int irq)
+{
+ *IXDP2351_CPLD_INTA_MASK_CLR_REG = IXDP2351_INTA_IRQ_MASK(irq);
+}
+
+static void ixdp2351_inta_handler(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs)
+{
+ u16 ex_interrupt =
+ *IXDP2351_CPLD_INTA_STAT_REG & IXDP2351_INTA_IRQ_VALID;
+ int i;
+
+ desc->chip->mask(irq);
+
+ for (i = 0; i < IXDP2351_INTA_IRQ_NUM; i++) {
+ if (ex_interrupt & (1 << i)) {
+ struct irqdesc *cpld_desc;
+ int cpld_irq =
+ IXP23XX_MACH_IRQ(IXDP2351_INTA_IRQ_BASE + i);
+ cpld_desc = irq_desc + cpld_irq;
+ cpld_desc->handle(cpld_irq, cpld_desc, regs);
+ }
+ }
+
+ desc->chip->unmask(irq);
+}
+
+static struct irqchip ixdp2351_inta_chip = {
+ .ack = ixdp2351_inta_mask,
+ .mask = ixdp2351_inta_mask,
+ .unmask = ixdp2351_inta_unmask
+};
+
+static void ixdp2351_intb_mask(unsigned int irq)
+{
+ *IXDP2351_CPLD_INTB_MASK_SET_REG = IXDP2351_INTB_IRQ_MASK(irq);
+}
+
+static void ixdp2351_intb_unmask(unsigned int irq)
+{
+ *IXDP2351_CPLD_INTB_MASK_CLR_REG = IXDP2351_INTB_IRQ_MASK(irq);
+}
+
+static void ixdp2351_intb_handler(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs)
+{
+ u16 ex_interrupt =
+ *IXDP2351_CPLD_INTB_STAT_REG & IXDP2351_INTB_IRQ_VALID;
+ int i;
+
+ desc->chip->ack(irq);
+
+ for (i = 0; i < IXDP2351_INTB_IRQ_NUM; i++) {
+ if (ex_interrupt & (1 << i)) {
+ struct irqdesc *cpld_desc;
+ int cpld_irq =
+ IXP23XX_MACH_IRQ(IXDP2351_INTB_IRQ_BASE + i);
+ cpld_desc = irq_desc + cpld_irq;
+ cpld_desc->handle(cpld_irq, cpld_desc, regs);
+ }
+ }
+
+ desc->chip->unmask(irq);
+}
+
+static struct irqchip ixdp2351_intb_chip = {
+ .ack = ixdp2351_intb_mask,
+ .mask = ixdp2351_intb_mask,
+ .unmask = ixdp2351_intb_unmask
+};
+
+void ixdp2351_init_irq(void)
+{
+ int irq;
+
+ /* Mask all interrupts from CPLD, disable simulation */
+ *IXDP2351_CPLD_INTA_MASK_SET_REG = (u16) -1;
+ *IXDP2351_CPLD_INTB_MASK_SET_REG = (u16) -1;
+ *IXDP2351_CPLD_INTA_SIM_REG = 0;
+ *IXDP2351_CPLD_INTB_SIM_REG = 0;
+
+ ixp23xx_init_irq();
+
+ for (irq = IXP23XX_MACH_IRQ(IXDP2351_INTA_IRQ_BASE);
+ irq <
+ IXP23XX_MACH_IRQ(IXDP2351_INTA_IRQ_BASE + IXDP2351_INTA_IRQ_NUM);
+ irq++) {
+ if (IXDP2351_INTA_IRQ_MASK(irq) & IXDP2351_INTA_IRQ_VALID) {
+ set_irq_flags(irq, IRQF_VALID);
+ set_irq_handler(irq, do_level_IRQ);
+ set_irq_chip(irq, &ixdp2351_inta_chip);
+ }
+ }
+
+ for (irq = IXP23XX_MACH_IRQ(IXDP2351_INTB_IRQ_BASE);
+ irq <
+ IXP23XX_MACH_IRQ(IXDP2351_INTB_IRQ_BASE + IXDP2351_INTB_IRQ_NUM);
+ irq++) {
+ if (IXDP2351_INTB_IRQ_MASK(irq) & IXDP2351_INTB_IRQ_VALID) {
+ set_irq_flags(irq, IRQF_VALID);
+ set_irq_handler(irq, do_level_IRQ);
+ set_irq_chip(irq, &ixdp2351_intb_chip);
+ }
+ }
+
+ set_irq_chained_handler(IRQ_IXP23XX_INTA, &ixdp2351_inta_handler);
+ set_irq_chained_handler(IRQ_IXP23XX_INTB, &ixdp2351_intb_handler);
+}
+
+/*
+ * IXDP2351 PCI
+ */
+
+/*
+ * This board does not do normal PCI IRQ routing, or any
+ * sort of swizzling, so we just need to check where on the
+ * bus the device is and figure out what CPLD pin it is
+ * being routed to.
+ */
+#define DEVPIN(dev, pin) ((pin) | ((dev) << 3))
+
+static int __init ixdp2351_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+{
+ u8 bus = dev->bus->number;
+ u32 devpin = DEVPIN(PCI_SLOT(dev->devfn), pin);
+ struct pci_bus *tmp_bus = dev->bus;
+
+ /* Primary bus, no interrupts here */
+ if (!bus)
+ return -1;
+
+ /* Lookup first leaf in bus tree */
+ while ((tmp_bus->parent != NULL) && (tmp_bus->parent->parent != NULL))
+ tmp_bus = tmp_bus->parent;
+
+ /* Select between known bridges */
+ switch (tmp_bus->self->devfn | (tmp_bus->self->bus->number << 8)) {
+ /* Device is located after first bridge */
+ case 0x0008:
+ if (tmp_bus == dev->bus) {
+ /* Device is located directy after first bridge */
+ switch (devpin) {
+ /* Onboard 82546 */
+ case DEVPIN(1, 1): /* Onboard 82546 ch 0 */
+ return IRQ_IXDP2351_INTA_82546;
+ case DEVPIN(1, 2): /* Onboard 82546 ch 1 */
+ return IRQ_IXDP2351_INTB_82546;
+ /* PMC SLOT */
+ case DEVPIN(0, 1): /* PMCP INTA# */
+ case DEVPIN(2, 4): /* PMCS INTD# */
+ return IRQ_IXDP2351_SPCI_PMC_INTA;
+ case DEVPIN(0, 2): /* PMCP INTB# */
+ case DEVPIN(2, 1): /* PMCS INTA# */
+ return IRQ_IXDP2351_SPCI_PMC_INTB;
+ case DEVPIN(0, 3): /* PMCP INTC# */
+ case DEVPIN(2, 2): /* PMCS INTB# */
+ return IRQ_IXDP2351_SPCI_PMC_INTC;
+ case DEVPIN(0, 4): /* PMCP INTD# */
+ case DEVPIN(2, 3): /* PMCS INTC# */
+ return IRQ_IXDP2351_SPCI_PMC_INTD;
+ }
+ } else {
+ /* Device is located indirectly after first bridge */
+ /* Not supported now */
+ return -1;
+ }
+ break;
+ case 0x0010:
+ if (tmp_bus == dev->bus) {
+ /* Device is located directy after second bridge */
+ /* Secondary bus of second bridge */
+ switch (devpin) {
+ case DEVPIN(0, 1): /* DB#0 */
+ case DEVPIN(0, 2):
+ case DEVPIN(0, 3):
+ case DEVPIN(0, 4):
+ return IRQ_IXDP2351_SPCI_DB_0;
+ case DEVPIN(1, 1): /* DB#1 */
+ case DEVPIN(1, 2):
+ case DEVPIN(1, 3):
+ case DEVPIN(1, 4):
+ return IRQ_IXDP2351_SPCI_DB_1;
+ case DEVPIN(2, 1): /* FIC1 */
+ case DEVPIN(2, 2):
+ case DEVPIN(2, 3):
+ case DEVPIN(2, 4):
+ case DEVPIN(3, 1): /* FIC2 */
+ case DEVPIN(3, 2):
+ case DEVPIN(3, 3):
+ case DEVPIN(3, 4):
+ return IRQ_IXDP2351_SPCI_FIC;
+ }
+ } else {
+ /* Device is located indirectly after second bridge */
+ /* Not supported now */
+ return -1;
+ }
+ break;
+ }
+
+ return -1;
+}
+
+struct hw_pci ixdp2351_pci __initdata = {
+ .nr_controllers = 1,
+ .preinit = ixp23xx_pci_preinit,
+ .setup = ixp23xx_pci_setup,
+ .scan = ixp23xx_pci_scan_bus,
+ .map_irq = ixdp2351_map_irq,
+};
+
+int __init ixdp2351_pci_init(void)
+{
+ if (machine_is_ixdp2351())
+ pci_common_init(&ixdp2351_pci);
+
+ return 0;
+}
+
+subsys_initcall(ixdp2351_pci_init);
+
+/*
+ * IXDP2351 Static Mapped I/O
+ */
+static struct map_desc ixdp2351_io_desc[] __initdata = {
+ {
+ .virtual = IXDP2351_NP_VIRT_BASE,
+ .pfn = __phys_to_pfn((u64)IXDP2351_NP_PHYS_BASE),
+ .length = IXDP2351_NP_PHYS_SIZE,
+ .type = MT_DEVICE
+ }, {
+ .virtual = IXDP2351_BB_BASE_VIRT,
+ .pfn = __phys_to_pfn((u64)IXDP2351_BB_BASE_PHYS),
+ .length = IXDP2351_BB_SIZE,
+ .type = MT_DEVICE
+ }
+};
+
+static void __init ixdp2351_map_io(void)
+{
+ ixp23xx_map_io();
+ iotable_init(ixdp2351_io_desc, ARRAY_SIZE(ixdp2351_io_desc));
+}
+
+static void __init ixdp2351_init(void)
+{
+ physmap_configure(0x90000000, 0x04000000, 1, NULL);
+
+ /*
+ * Mark flash as writeable
+ */
+ IXP23XX_EXP_CS0[0] |= IXP23XX_FLASH_WRITABLE;
+ IXP23XX_EXP_CS0[1] |= IXP23XX_FLASH_WRITABLE;
+ IXP23XX_EXP_CS0[2] |= IXP23XX_FLASH_WRITABLE;
+ IXP23XX_EXP_CS0[3] |= IXP23XX_FLASH_WRITABLE;
+
+ ixp23xx_sys_init();
+}
+
+MACHINE_START(IXDP2351, "Intel IXDP2351 Development Platform")
+ /* Maintainer: MontaVista Software, Inc. */
+ .phys_io = IXP23XX_PERIPHERAL_PHYS,
+ .io_pg_offst = ((IXP23XX_PERIPHERAL_VIRT >> 18)) & 0xfffc,
+ .map_io = ixdp2351_map_io,
+ .init_irq = ixdp2351_init_irq,
+ .timer = &ixp23xx_timer,
+ .boot_params = 0x00000100,
+ .init_machine = ixdp2351_init,
+MACHINE_END
--- /dev/null
+/*
+ * arch/arm/mach-ixp23xx/pci.c
+ *
+ * PCI routines for IXP23XX based systems
+ *
+ * Copyright (c) 2005 MontaVista Software, Inc.
+ *
+ * based on original code:
+ *
+ * Author: Naeem Afzal <naeem.m.afzal@intel.com>
+ * Copyright 2002-2005 Intel Corp.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/config.h>
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/interrupt.h>
+#include <linux/mm.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/sizes.h>
+#include <asm/system.h>
+#include <asm/mach/pci.h>
+#include <asm/mach-types.h>
+#include <asm/hardware.h>
+
+extern int (*external_fault) (unsigned long, struct pt_regs *);
+
+static int pci_master_aborts = 0;
+
+#ifdef DEBUG
+#define DBG(x...) printk(x)
+#else
+#define DBG(x...)
+#endif
+
+int clear_master_aborts(void);
+
+static u32
+*ixp23xx_pci_config_addr(unsigned int bus_nr, unsigned int devfn, int where)
+{
+ u32 *paddress;
+
+ /*
+ * Must be dword aligned
+ */
+ where &= ~3;
+
+ /*
+ * For top bus, generate type 0, else type 1
+ */
+ if (!bus_nr) {
+ if (PCI_SLOT(devfn) >= 8)
+ return 0;
+
+ paddress = (u32 *) (IXP23XX_PCI_CFG0_VIRT
+ | (1 << (PCI_SLOT(devfn) + 16))
+ | (PCI_FUNC(devfn) << 8) | where);
+ } else {
+ paddress = (u32 *) (IXP23XX_PCI_CFG1_VIRT
+ | (bus_nr << 16)
+ | (PCI_SLOT(devfn) << 11)
+ | (PCI_FUNC(devfn) << 8) | where);
+ }
+
+ return paddress;
+}
+
+/*
+ * Mask table, bits to mask for quantity of size 1, 2 or 4 bytes.
+ * 0 and 3 are not valid indexes...
+ */
+static u32 bytemask[] = {
+ /*0*/ 0,
+ /*1*/ 0xff,
+ /*2*/ 0xffff,
+ /*3*/ 0,
+ /*4*/ 0xffffffff,
+};
+
+static int ixp23xx_pci_read_config(struct pci_bus *bus, unsigned int devfn,
+ int where, int size, u32 *value)
+{
+ u32 n;
+ u32 *addr;
+
+ n = where % 4;
+
+ DBG("In config_read(%d) %d from dev %d:%d:%d\n", size, where,
+ bus->number, PCI_SLOT(devfn), PCI_FUNC(devfn));
+
+ addr = ixp23xx_pci_config_addr(bus->number, devfn, where);
+ if (!addr)
+ return PCIBIOS_DEVICE_NOT_FOUND;
+
+ pci_master_aborts = 0;
+ *value = (*addr >> (8*n)) & bytemask[size];
+ if (pci_master_aborts) {
+ pci_master_aborts = 0;
+ *value = 0xffffffff;
+ return PCIBIOS_DEVICE_NOT_FOUND;
+ }
+
+ return PCIBIOS_SUCCESSFUL;
+}
+
+/*
+ * We don't do error checking on the address for writes.
+ * It's assumed that the user checked for the device existing first
+ * by doing a read first.
+ */
+static int ixp23xx_pci_write_config(struct pci_bus *bus, unsigned int devfn,
+ int where, int size, u32 value)
+{
+ u32 mask;
+ u32 *addr;
+ u32 temp;
+
+ mask = ~(bytemask[size] << ((where % 0x4) * 8));
+ addr = ixp23xx_pci_config_addr(bus->number, devfn, where);
+ if (!addr)
+ return PCIBIOS_DEVICE_NOT_FOUND;
+ temp = (u32) (value) << ((where % 0x4) * 8);
+ *addr = (*addr & mask) | temp;
+
+ clear_master_aborts();
+
+ return PCIBIOS_SUCCESSFUL;
+}
+
+struct pci_ops ixp23xx_pci_ops = {
+ .read = ixp23xx_pci_read_config,
+ .write = ixp23xx_pci_write_config,
+};
+
+struct pci_bus *ixp23xx_pci_scan_bus(int nr, struct pci_sys_data *sysdata)
+{
+ return pci_scan_bus(sysdata->busnr, &ixp23xx_pci_ops, sysdata);
+}
+
+int ixp23xx_pci_abort_handler(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
+{
+ volatile unsigned long temp;
+ unsigned long flags;
+
+ pci_master_aborts = 1;
+
+ local_irq_save(flags);
+ temp = *IXP23XX_PCI_CONTROL;
+
+ /*
+ * master abort and cmd tgt err
+ */
+ if (temp & ((1 << 8) | (1 << 5)))
+ *IXP23XX_PCI_CONTROL = temp;
+
+ temp = *IXP23XX_PCI_CMDSTAT;
+
+ if (temp & (1 << 29))
+ *IXP23XX_PCI_CMDSTAT = temp;
+ local_irq_restore(flags);
+
+ /*
+ * If it was an imprecise abort, then we need to correct the
+ * return address to be _after_ the instruction.
+ */
+ if (fsr & (1 << 10))
+ regs->ARM_pc += 4;
+
+ return 0;
+}
+
+int clear_master_aborts(void)
+{
+ volatile u32 temp;
+
+ temp = *IXP23XX_PCI_CONTROL;
+
+ /*
+ * master abort and cmd tgt err
+ */
+ if (temp & ((1 << 8) | (1 << 5)))
+ *IXP23XX_PCI_CONTROL = temp;
+
+ temp = *IXP23XX_PCI_CMDSTAT;
+
+ if (temp & (1 << 29))
+ *IXP23XX_PCI_CMDSTAT = temp;
+
+ return 0;
+}
+
+void __init ixp23xx_pci_preinit(void)
+{
+#ifdef __ARMEB__
+ *IXP23XX_PCI_CONTROL |= 0x20000; /* set I/O swapping */
+#endif
+ /*
+ * ADDR_31 needs to be clear for PCI memory access to CPP memory
+ */
+ *IXP23XX_CPP2XSI_CURR_XFER_REG3 &= ~IXP23XX_CPP2XSI_ADDR_31;
+ *IXP23XX_CPP2XSI_CURR_XFER_REG3 |= IXP23XX_CPP2XSI_PSH_OFF;
+
+ /*
+ * Select correct memory for PCI inbound transactions
+ */
+ if (ixp23xx_cpp_boot()) {
+ *IXP23XX_PCI_CPP_ADDR_BITS &= ~(1 << 1);
+ } else {
+ *IXP23XX_PCI_CPP_ADDR_BITS |= (1 << 1);
+ }
+
+ hook_fault_code(16+6, ixp23xx_pci_abort_handler, SIGBUS,
+ "PCI config cycle to non-existent device");
+
+ *IXP23XX_PCI_ADDR_EXT = 0x0000e000;
+}
+
+/*
+ * Prevent PCI layer from seeing the inbound host-bridge resources
+ */
+static void __devinit pci_fixup_ixp23xx(struct pci_dev *dev)
+{
+ int i;
+
+ dev->class &= 0xff;
+ dev->class |= PCI_CLASS_BRIDGE_HOST << 8;
+ for (i = 0; i < PCI_NUM_RESOURCES; i++) {
+ dev->resource[i].start = 0;
+ dev->resource[i].end = 0;
+ dev->resource[i].flags = 0;
+ }
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9002, pci_fixup_ixp23xx);
+
+/*
+ * IXP2300 systems often have large resource requirements, so we just
+ * use our own resource space.
+ */
+static struct resource ixp23xx_pci_mem_space = {
+ .start = IXP23XX_PCI_MEM_START,
+ .end = IXP23XX_PCI_MEM_START + IXP23XX_PCI_MEM_SIZE - 1,
+ .flags = IORESOURCE_MEM,
+ .name = "PCI Mem Space"
+};
+
+static struct resource ixp23xx_pci_io_space = {
+ .start = 0x00000100,
+ .end = 0x01ffffff,
+ .flags = IORESOURCE_IO,
+ .name = "PCI I/O Space"
+};
+
+int ixp23xx_pci_setup(int nr, struct pci_sys_data *sys)
+{
+ if (nr >= 1)
+ return 0;
+
+ sys->resource[0] = &ixp23xx_pci_io_space;
+ sys->resource[1] = &ixp23xx_pci_mem_space;
+ sys->resource[2] = NULL;
+
+ return 1;
+}
--- /dev/null
+/*
+ * arch/arm/mach-ixp23xx/roadrunner.c
+ *
+ * RoadRunner board-specific routines
+ *
+ * Author: Deepak Saxena <dsaxena@plexity.net>
+ *
+ * Copyright 2005 (c) MontaVista Software, Inc.
+ *
+ * Based on 2.4 code Copyright 2005 (c) ADI Engineering Corporation
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/spinlock.h>
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+#include <linux/serial.h>
+#include <linux/tty.h>
+#include <linux/bitops.h>
+#include <linux/ioport.h>
+#include <linux/serial.h>
+#include <linux/serial_8250.h>
+#include <linux/serial_core.h>
+#include <linux/device.h>
+#include <linux/mm.h>
+#include <linux/pci.h>
+#include <linux/mtd/physmap.h>
+
+#include <asm/types.h>
+#include <asm/setup.h>
+#include <asm/memory.h>
+#include <asm/hardware.h>
+#include <asm/mach-types.h>
+#include <asm/irq.h>
+#include <asm/system.h>
+#include <asm/tlbflush.h>
+#include <asm/pgtable.h>
+
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/irq.h>
+#include <asm/mach/pci.h>
+
+/*
+ * Interrupt mapping
+ */
+#define INTA IRQ_ROADRUNNER_PCI_INTA
+#define INTB IRQ_ROADRUNNER_PCI_INTB
+#define INTC IRQ_ROADRUNNER_PCI_INTC
+#define INTD IRQ_ROADRUNNER_PCI_INTD
+
+#define INTC_PIN IXP23XX_GPIO_PIN_11
+#define INTD_PIN IXP23XX_GPIO_PIN_12
+
+static int __init roadrunner_map_irq(struct pci_dev *dev, u8 idsel, u8 pin)
+{
+ static int pci_card_slot_irq[] = {INTB, INTC, INTD, INTA};
+ static int pmc_card_slot_irq[] = {INTA, INTB, INTC, INTD};
+ static int usb_irq[] = {INTB, INTC, INTD, -1};
+ static int mini_pci_1_irq[] = {INTB, INTC, -1, -1};
+ static int mini_pci_2_irq[] = {INTC, INTD, -1, -1};
+
+ switch(dev->bus->number) {
+ case 0:
+ switch(dev->devfn) {
+ case 0x0: // PCI-PCI bridge
+ break;
+ case 0x8: // PCI Card Slot
+ return pci_card_slot_irq[pin - 1];
+ case 0x10: // PMC Slot
+ return pmc_card_slot_irq[pin - 1];
+ case 0x18: // PMC Slot Secondary Agent
+ break;
+ case 0x20: // IXP Processor
+ break;
+ default:
+ return NO_IRQ;
+ }
+ break;
+
+ case 1:
+ switch(dev->devfn) {
+ case 0x0: // IDE Controller
+ return (pin == 1) ? INTC : -1;
+ case 0x8: // USB fun 0
+ case 0x9: // USB fun 1
+ case 0xa: // USB fun 2
+ return usb_irq[pin - 1];
+ case 0x10: // Mini PCI 1
+ return mini_pci_1_irq[pin-1];
+ case 0x18: // Mini PCI 2
+ return mini_pci_2_irq[pin-1];
+ case 0x20: // MEM slot
+ return (pin == 1) ? INTA : -1;
+ default:
+ return NO_IRQ;
+ }
+ break;
+
+ default:
+ return NO_IRQ;
+ }
+
+ return NO_IRQ;
+}
+
+static void roadrunner_pci_preinit(void)
+{
+ set_irq_type(IRQ_ROADRUNNER_PCI_INTC, IRQT_LOW);
+ set_irq_type(IRQ_ROADRUNNER_PCI_INTD, IRQT_LOW);
+
+ ixp23xx_pci_preinit();
+}
+
+static struct hw_pci roadrunner_pci __initdata = {
+ .nr_controllers = 1,
+ .preinit = roadrunner_pci_preinit,
+ .setup = ixp23xx_pci_setup,
+ .scan = ixp23xx_pci_scan_bus,
+ .map_irq = roadrunner_map_irq,
+};
+
+static int __init roadrunner_pci_init(void)
+{
+ if (machine_is_roadrunner())
+ pci_common_init(&roadrunner_pci);
+
+ return 0;
+};
+
+subsys_initcall(roadrunner_pci_init);
+
+static void __init roadrunner_init(void)
+{
+ physmap_configure(0x90000000, 0x04000000, 2, NULL);
+
+ /*
+ * Mark flash as writeable
+ */
+ IXP23XX_EXP_CS0[0] |= IXP23XX_FLASH_WRITABLE;
+ IXP23XX_EXP_CS0[1] |= IXP23XX_FLASH_WRITABLE;
+ IXP23XX_EXP_CS0[2] |= IXP23XX_FLASH_WRITABLE;
+ IXP23XX_EXP_CS0[3] |= IXP23XX_FLASH_WRITABLE;
+
+ ixp23xx_sys_init();
+}
+
+MACHINE_START(ROADRUNNER, "ADI Engineering RoadRunner Development Platform")
+ /* Maintainer: Deepak Saxena */
+ .phys_io = IXP23XX_PERIPHERAL_PHYS,
+ .io_pg_offst = ((IXP23XX_PERIPHERAL_VIRT >> 18)) & 0xfffc,
+ .map_io = ixp23xx_map_io,
+ .init_irq = ixp23xx_init_irq,
+ .timer = &ixp23xx_timer,
+ .boot_params = 0x00000100,
+ .init_machine = roadrunner_init,
+MACHINE_END
/* TODO: Setup front panel switch here */
/* Setup panic notifier */
- notifier_chain_register(&panic_notifier_list, &panic_block);
+ atomic_notifier_chain_register(&panic_notifier_list, &panic_block);
return 0;
}
static int __init voiceblue_setup(void)
{
/* Setup panic notifier */
- notifier_chain_register(&panic_notifier_list, &panic_block);
+ atomic_notifier_chain_register(&panic_notifier_list, &panic_block);
return 0;
}
select PXA25x
select SA1111
+config MACH_LOGICPD_PXA270
+ bool "LogicPD PXA270 Card Engine Development Platform"
+ select PXA27x
+ select IWMMXT
+
config MACH_MAINSTONE
bool "Intel HCDDBBVA0 Development Platform"
select PXA27x
# Specific board support
obj-$(CONFIG_ARCH_LUBBOCK) += lubbock.o
+obj-$(CONFIG_MACH_LOGICPD_PXA270) += lpd270.o
obj-$(CONFIG_MACH_MAINSTONE) += mainstone.o
obj-$(CONFIG_ARCH_PXA_IDP) += idp.o
obj-$(CONFIG_PXA_SHARP_C7xx) += corgi.o corgi_ssp.o corgi_lcd.o sharpsl_pm.o corgi_pm.o
pxaficp_device.dev.platform_data = info;
}
+static struct platform_device pxartc_device = {
+ .name = "sa1100-rtc",
+ .id = -1,
+};
+
static struct platform_device *devices[] __initdata = {
&pxamci_device,
&udc_device,
&pxaficp_device,
&i2c_device,
&i2s_device,
+ &pxartc_device,
};
static int __init pxa_init(void)
--- /dev/null
+/*
+ * linux/arch/arm/mach-pxa/lpd270.c
+ *
+ * Support for the LogicPD PXA270 Card Engine.
+ * Derived from the mainstone code, which carries these notices:
+ *
+ * Author: Nicolas Pitre
+ * Created: Nov 05, 2002
+ * Copyright: MontaVista Software Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/sysdev.h>
+#include <linux/interrupt.h>
+#include <linux/sched.h>
+#include <linux/bitops.h>
+#include <linux/fb.h>
+#include <linux/ioport.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+
+#include <asm/types.h>
+#include <asm/setup.h>
+#include <asm/memory.h>
+#include <asm/mach-types.h>
+#include <asm/hardware.h>
+#include <asm/irq.h>
+#include <asm/sizes.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+#include <asm/mach/flash.h>
+
+#include <asm/arch/pxa-regs.h>
+#include <asm/arch/lpd270.h>
+#include <asm/arch/audio.h>
+#include <asm/arch/pxafb.h>
+#include <asm/arch/mmc.h>
+#include <asm/arch/irda.h>
+#include <asm/arch/ohci.h>
+
+#include "generic.h"
+
+
+static unsigned int lpd270_irq_enabled;
+
+static void lpd270_mask_irq(unsigned int irq)
+{
+ int lpd270_irq = irq - LPD270_IRQ(0);
+
+ __raw_writew(~(1 << lpd270_irq), LPD270_INT_STATUS);
+
+ lpd270_irq_enabled &= ~(1 << lpd270_irq);
+ __raw_writew(lpd270_irq_enabled, LPD270_INT_MASK);
+}
+
+static void lpd270_unmask_irq(unsigned int irq)
+{
+ int lpd270_irq = irq - LPD270_IRQ(0);
+
+ lpd270_irq_enabled |= 1 << lpd270_irq;
+ __raw_writew(lpd270_irq_enabled, LPD270_INT_MASK);
+}
+
+static struct irqchip lpd270_irq_chip = {
+ .ack = lpd270_mask_irq,
+ .mask = lpd270_mask_irq,
+ .unmask = lpd270_unmask_irq,
+};
+
+static void lpd270_irq_handler(unsigned int irq, struct irqdesc *desc,
+ struct pt_regs *regs)
+{
+ unsigned long pending;
+
+ pending = __raw_readw(LPD270_INT_STATUS) & lpd270_irq_enabled;
+ do {
+ GEDR(0) = GPIO_bit(0); /* clear useless edge notification */
+ if (likely(pending)) {
+ irq = LPD270_IRQ(0) + __ffs(pending);
+ desc = irq_desc + irq;
+ desc_handle_irq(irq, desc, regs);
+
+ pending = __raw_readw(LPD270_INT_STATUS) &
+ lpd270_irq_enabled;
+ }
+ } while (pending);
+}
+
+static void __init lpd270_init_irq(void)
+{
+ int irq;
+
+ pxa_init_irq();
+
+ __raw_writew(0, LPD270_INT_MASK);
+ __raw_writew(0, LPD270_INT_STATUS);
+
+ /* setup extra LogicPD PXA270 irqs */
+ for (irq = LPD270_IRQ(2); irq <= LPD270_IRQ(4); irq++) {
+ set_irq_chip(irq, &lpd270_irq_chip);
+ set_irq_handler(irq, do_level_IRQ);
+ set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
+ }
+ set_irq_chained_handler(IRQ_GPIO(0), lpd270_irq_handler);
+ set_irq_type(IRQ_GPIO(0), IRQT_FALLING);
+}
+
+
+#ifdef CONFIG_PM
+static int lpd270_irq_resume(struct sys_device *dev)
+{
+ __raw_writew(lpd270_irq_enabled, LPD270_INT_MASK);
+ return 0;
+}
+
+static struct sysdev_class lpd270_irq_sysclass = {
+ set_kset_name("cpld_irq"),
+ .resume = lpd270_irq_resume,
+};
+
+static struct sys_device lpd270_irq_device = {
+ .cls = &lpd270_irq_sysclass,
+};
+
+static int __init lpd270_irq_device_init(void)
+{
+ int ret = sysdev_class_register(&lpd270_irq_sysclass);
+ if (ret == 0)
+ ret = sysdev_register(&lpd270_irq_device);
+ return ret;
+}
+
+device_initcall(lpd270_irq_device_init);
+#endif
+
+
+static struct resource smc91x_resources[] = {
+ [0] = {
+ .start = LPD270_ETH_PHYS,
+ .end = (LPD270_ETH_PHYS + 0xfffff),
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = LPD270_ETHERNET_IRQ,
+ .end = LPD270_ETHERNET_IRQ,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct platform_device smc91x_device = {
+ .name = "smc91x",
+ .id = 0,
+ .num_resources = ARRAY_SIZE(smc91x_resources),
+ .resource = smc91x_resources,
+};
+
+static struct platform_device lpd270_audio_device = {
+ .name = "pxa2xx-ac97",
+ .id = -1,
+};
+
+static struct resource lpd270_flash_resources[] = {
+ [0] = {
+ .start = PXA_CS0_PHYS,
+ .end = PXA_CS0_PHYS + SZ_64M - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = PXA_CS1_PHYS,
+ .end = PXA_CS1_PHYS + SZ_64M - 1,
+ .flags = IORESOURCE_MEM,
+ },
+};
+
+static struct mtd_partition lpd270_flash0_partitions[] = {
+ {
+ .name = "Bootloader",
+ .size = 0x00040000,
+ .offset = 0,
+ .mask_flags = MTD_WRITEABLE /* force read-only */
+ }, {
+ .name = "Kernel",
+ .size = 0x00400000,
+ .offset = 0x00040000,
+ }, {
+ .name = "Filesystem",
+ .size = MTDPART_SIZ_FULL,
+ .offset = 0x00440000
+ },
+};
+
+static struct flash_platform_data lpd270_flash_data[2] = {
+ {
+ .name = "processor-flash",
+ .map_name = "cfi_probe",
+ .parts = lpd270_flash0_partitions,
+ .nr_parts = ARRAY_SIZE(lpd270_flash0_partitions),
+ }, {
+ .name = "mainboard-flash",
+ .map_name = "cfi_probe",
+ .parts = NULL,
+ .nr_parts = 0,
+ }
+};
+
+static struct platform_device lpd270_flash_device[2] = {
+ {
+ .name = "pxa2xx-flash",
+ .id = 0,
+ .dev = {
+ .platform_data = &lpd270_flash_data[0],
+ },
+ .resource = &lpd270_flash_resources[0],
+ .num_resources = 1,
+ }, {
+ .name = "pxa2xx-flash",
+ .id = 1,
+ .dev = {
+ .platform_data = &lpd270_flash_data[1],
+ },
+ .resource = &lpd270_flash_resources[1],
+ .num_resources = 1,
+ },
+};
+
+static void lpd270_backlight_power(int on)
+{
+ if (on) {
+ pxa_gpio_mode(GPIO16_PWM0_MD);
+ pxa_set_cken(CKEN0_PWM0, 1);
+ PWM_CTRL0 = 0;
+ PWM_PWDUTY0 = 0x3ff;
+ PWM_PERVAL0 = 0x3ff;
+ } else {
+ PWM_CTRL0 = 0;
+ PWM_PWDUTY0 = 0x0;
+ PWM_PERVAL0 = 0x3FF;
+ pxa_set_cken(CKEN0_PWM0, 0);
+ }
+}
+
+/* 5.7" TFT QVGA (LoLo display number 1) */
+static struct pxafb_mach_info sharp_lq057q3dc02 __initdata = {
+ .pixclock = 100000,
+ .xres = 240,
+ .yres = 320,
+ .bpp = 16,
+ .hsync_len = 64,
+ .left_margin = 0x27,
+ .right_margin = 0x09,
+ .vsync_len = 0x04,
+ .upper_margin = 0x08,
+ .lower_margin = 0x14,
+ .sync = 0,
+ .lccr0 = 0x07800080,
+ .lccr3 = 0x04400007,
+ .pxafb_backlight_power = lpd270_backlight_power,
+};
+
+/* 6.4" TFT VGA (LoLo display number 5) */
+static struct pxafb_mach_info sharp_lq64d343 __initdata = {
+ .pixclock = 20000,
+ .xres = 640,
+ .yres = 480,
+ .bpp = 16,
+ .hsync_len = 49,
+ .left_margin = 0x89,
+ .right_margin = 0x19,
+ .vsync_len = 18,
+ .upper_margin = 0x22,
+ .lower_margin = 0,
+ .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+ .lccr0 = 0x07800080,
+ .lccr3 = 0x04400001,
+ .pxafb_backlight_power = lpd270_backlight_power,
+};
+
+/* 3.5" TFT QVGA (LoLo display number 8) */
+static struct pxafb_mach_info sharp_lq035q7db02_20 __initdata = {
+ .pixclock = 100000,
+ .xres = 240,
+ .yres = 320,
+ .bpp = 16,
+ .hsync_len = 0x34,
+ .left_margin = 0x09,
+ .right_margin = 0x09,
+ .vsync_len = 0x08,
+ .upper_margin = 0x05,
+ .lower_margin = 0x14,
+ .sync = 0,
+ .lccr0 = 0x07800080,
+ .lccr3 = 0x04400007,
+ .pxafb_backlight_power = lpd270_backlight_power,
+};
+
+static struct platform_device *platform_devices[] __initdata = {
+ &smc91x_device,
+ &lpd270_audio_device,
+ &lpd270_flash_device[0],
+ &lpd270_flash_device[1],
+};
+
+static int lpd270_ohci_init(struct device *dev)
+{
+ /* setup Port1 GPIO pin. */
+ pxa_gpio_mode(88 | GPIO_ALT_FN_1_IN); /* USBHPWR1 */
+ pxa_gpio_mode(89 | GPIO_ALT_FN_2_OUT); /* USBHPEN1 */
+
+ /* Set the Power Control Polarity Low and Power Sense
+ Polarity Low to active low. */
+ UHCHR = (UHCHR | UHCHR_PCPL | UHCHR_PSPL) &
+ ~(UHCHR_SSEP1 | UHCHR_SSEP2 | UHCHR_SSEP3 | UHCHR_SSE);
+
+ return 0;
+}
+
+static struct pxaohci_platform_data lpd270_ohci_platform_data = {
+ .port_mode = PMM_PERPORT_MODE,
+ .init = lpd270_ohci_init,
+};
+
+static void __init lpd270_init(void)
+{
+ lpd270_flash_data[0].width = (BOOT_DEF & 1) ? 2 : 4;
+ lpd270_flash_data[1].width = 4;
+
+ /*
+ * System bus arbiter setting:
+ * - Core_Park
+ * - LCD_wt:DMA_wt:CORE_Wt = 2:3:4
+ */
+ ARB_CNTRL = ARB_CORE_PARK | 0x234;
+
+ /*
+ * On LogicPD PXA270, we route AC97_SYSCLK via GPIO45.
+ */
+ pxa_gpio_mode(GPIO45_SYSCLK_AC97_MD);
+
+ platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
+
+ // set_pxa_fb_info(&sharp_lq057q3dc02);
+ set_pxa_fb_info(&sharp_lq64d343);
+ // set_pxa_fb_info(&sharp_lq035q7db02_20);
+
+ pxa_set_ohci_info(&lpd270_ohci_platform_data);
+}
+
+
+static struct map_desc lpd270_io_desc[] __initdata = {
+ {
+ .virtual = LPD270_CPLD_VIRT,
+ .pfn = __phys_to_pfn(LPD270_CPLD_PHYS),
+ .length = LPD270_CPLD_SIZE,
+ .type = MT_DEVICE,
+ },
+};
+
+static void __init lpd270_map_io(void)
+{
+ pxa_map_io();
+ iotable_init(lpd270_io_desc, ARRAY_SIZE(lpd270_io_desc));
+
+ /* initialize sleep mode regs (wake-up sources, etc) */
+ PGSR0 = 0x00008800;
+ PGSR1 = 0x00000002;
+ PGSR2 = 0x0001FC00;
+ PGSR3 = 0x00001F81;
+ PWER = 0xC0000002;
+ PRER = 0x00000002;
+ PFER = 0x00000002;
+
+ /* for use I SRAM as framebuffer. */
+ PSLR |= 0x00000F04;
+ PCFR = 0x00000066;
+}
+
+MACHINE_START(LOGICPD_PXA270, "LogicPD PXA270 Card Engine")
+ /* Maintainer: Peter Barada */
+ .phys_io = 0x40000000,
+ .io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
+ .boot_params = 0xa0000100,
+ .map_io = lpd270_map_io,
+ .init_irq = lpd270_init_irq,
+ .timer = &pxa_timer,
+ .init_machine = lpd270_init,
+MACHINE_END
.id = -1,
};
+EXPORT_SYMBOL_GPL(akitaioexp_device);
+
static void __init akita_init(void)
{
spitz_ficp_platform_data.transceiver_mode = akita_irda_transceiver_mode;
bool "LART"
help
Say Y here if you are using the Linux Advanced Radio Terminal
- (also known as the LART). See <http://www.lart.tudelft.nl/> for
+ (also known as the LART). See <http://www.lartmaker.nl/> for
information on the LART.
config SA1100_PLEB
* linux-2.4.5-rmk1
*
* This software has been developed while working on the LART
- * computing board (http://www.lart.tudelft.nl/), which is
+ * computing board (http://www.lartmaker.nl/), which is
* sponsored by the Mobile Multi-media Communications
* (http://www.mmc.tudelft.nl/) and Ubiquitous Communications
* (http://www.ubicom.tudelft.nl/) projects.
sa11x0ir_device.dev.platform_data = irda;
}
+static struct platform_device sa11x0rtc_device = {
+ .name = "sa1100-rtc",
+ .id = -1,
+};
+
static struct platform_device *sa11x0_devices[] __initdata = {
&sa11x0udc_device,
&sa11x0uart1_device,
&sa11x0pcmcia_device,
&sa11x0fb_device,
&sa11x0mtd_device,
+ &sa11x0rtc_device,
};
static int __init sa1100_init(void)
select CPU_CACHE_VIVT
select CPU_TLB_V4WBI
+# XScale Core Version 3
+config CPU_XSC3
+ bool
+ depends on ARCH_IXP23XX
+ default y
+ select CPU_32v5
+ select CPU_ABRT_EV5T
+ select CPU_CACHE_VIVT
+ select CPU_TLB_V4WBI
+ select IO_36
+
# ARMv6
config CPU_V6
bool "Support ARM V6 processor"
config CPU_TLB_V6
bool
+#
+# CPU supports 36-bit I/O
+#
+config IO_36
+ bool
+
comment "Processor Features"
config ARM_THUMB
bool "Support Thumb user binaries"
- depends on CPU_ARM720T || CPU_ARM920T || CPU_ARM922T || CPU_ARM925T || CPU_ARM926T || CPU_ARM1020 || CPU_ARM1020E || CPU_ARM1022 || CPU_ARM1026 || CPU_XSCALE || CPU_V6
+ depends on CPU_ARM720T || CPU_ARM920T || CPU_ARM922T || CPU_ARM925T || CPU_ARM926T || CPU_ARM1020 || CPU_ARM1020E || CPU_ARM1022 || CPU_ARM1026 || CPU_XSCALE || CPU_XSC3 || CPU_V6
default y
help
Say Y if you want to include kernel support for running user space
obj-$(CONFIG_CPU_COPY_V6) += copypage-v6.o mmu.o
obj-$(CONFIG_CPU_SA1100) += copypage-v4mc.o
obj-$(CONFIG_CPU_XSCALE) += copypage-xscale.o
+obj-$(CONFIG_CPU_XSC3) += copypage-xsc3.o
obj-$(CONFIG_CPU_TLB_V3) += tlb-v3.o
obj-$(CONFIG_CPU_TLB_V4WT) += tlb-v4.o
obj-$(CONFIG_CPU_SA110) += proc-sa110.o
obj-$(CONFIG_CPU_SA1100) += proc-sa1100.o
obj-$(CONFIG_CPU_XSCALE) += proc-xscale.o
+obj-$(CONFIG_CPU_XSC3) += proc-xsc3.o
obj-$(CONFIG_CPU_V6) += proc-v6.o
--- /dev/null
+/*
+ * linux/arch/arm/lib/copypage-xsc3.S
+ *
+ * Copyright (C) 2004 Intel Corp.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Adapted for 3rd gen XScale core, no more mini-dcache
+ * Author: Matt Gilbert (matthew.m.gilbert@intel.com)
+ */
+
+#include <linux/linkage.h>
+#include <linux/init.h>
+#include <asm/asm-offsets.h>
+
+/*
+ * General note:
+ * We don't really want write-allocate cache behaviour for these functions
+ * since that will just eat through 8K of the cache.
+ */
+
+ .text
+ .align 5
+/*
+ * XSC3 optimised copy_user_page
+ * r0 = destination
+ * r1 = source
+ * r2 = virtual user address of ultimate destination page
+ *
+ * The source page may have some clean entries in the cache already, but we
+ * can safely ignore them - break_cow() will flush them out of the cache
+ * if we eventually end up using our copied page.
+ *
+ */
+ENTRY(xsc3_mc_copy_user_page)
+ stmfd sp!, {r4, r5, lr}
+ mov lr, #PAGE_SZ/64-1
+
+ pld [r1, #0]
+ pld [r1, #32]
+1: pld [r1, #64]
+ pld [r1, #96]
+
+2: ldrd r2, [r1], #8
+ mov ip, r0
+ ldrd r4, [r1], #8
+ mcr p15, 0, ip, c7, c6, 1 @ invalidate
+ strd r2, [r0], #8
+ ldrd r2, [r1], #8
+ strd r4, [r0], #8
+ ldrd r4, [r1], #8
+ strd r2, [r0], #8
+ strd r4, [r0], #8
+ ldrd r2, [r1], #8
+ mov ip, r0
+ ldrd r4, [r1], #8
+ mcr p15, 0, ip, c7, c6, 1 @ invalidate
+ strd r2, [r0], #8
+ ldrd r2, [r1], #8
+ subs lr, lr, #1
+ strd r4, [r0], #8
+ ldrd r4, [r1], #8
+ strd r2, [r0], #8
+ strd r4, [r0], #8
+ bgt 1b
+ beq 2b
+
+ ldmfd sp!, {r4, r5, pc}
+
+ .align 5
+/*
+ * XScale optimised clear_user_page
+ * r0 = destination
+ * r1 = virtual user address of ultimate destination page
+ */
+ENTRY(xsc3_mc_clear_user_page)
+ mov r1, #PAGE_SZ/32
+ mov r2, #0
+ mov r3, #0
+1: mcr p15, 0, r0, c7, c6, 1 @ invalidate line
+ strd r2, [r0], #8
+ strd r2, [r0], #8
+ strd r2, [r0], #8
+ strd r2, [r0], #8
+ subs r1, r1, #1
+ bne 1b
+ mov pc, lr
+
+ __INITDATA
+
+ .type xsc3_mc_user_fns, #object
+ENTRY(xsc3_mc_user_fns)
+ .long xsc3_mc_clear_user_page
+ .long xsc3_mc_copy_user_page
+ .size xsc3_mc_user_fns, . - xsc3_mc_user_fns
* supersections are only allocated for domain 0 regardless
* of the actual domain assignments in use.
*/
- if (cpu_architecture() >= CPU_ARCH_ARMv6 && domain == 0) {
+ if ((cpu_architecture() >= CPU_ARCH_ARMv6 || cpu_is_xsc3())
+ && domain == 0) {
/*
* Align to supersection boundary if !high pages.
* High pages have already been checked for proper
#define D_CACHE_LINE_SIZE 32
+#define TTB_C (1 << 0)
+#define TTB_S (1 << 1)
+#define TTB_IMP (1 << 2)
+#define TTB_RGN_NC (0 << 3)
+#define TTB_RGN_WBWA (1 << 3)
+#define TTB_RGN_WT (2 << 3)
+#define TTB_RGN_WB (3 << 3)
+
.macro cpsie, flags
.ifc \flags, f
.long 0xf1080040
mov r2, #0
ldr r1, [r1, #MM_CONTEXT_ID] @ get mm->context.id
#ifdef CONFIG_SMP
- orr r0, r0, #2 @ set shared pgtable
+ orr r0, r0, #TTB_RGN_WBWA|TTB_S @ mark PTWs shared, outer cacheable
#endif
mcr p15, 0, r2, c7, c5, 6 @ flush BTAC/BTB
mcr p15, 0, r2, c7, c10, 4 @ drain write buffer
tst r1, #L_PTE_YOUNG
biceq r2, r2, #PTE_EXT_APX | PTE_EXT_AP_MASK
-@ tst r1, #L_PTE_EXEC
-@ orreq r2, r2, #PTE_EXT_XN
+ tst r1, #L_PTE_EXEC
+ orreq r2, r2, #PTE_EXT_XN
tst r1, #L_PTE_PRESENT
moveq r2, #0
mcr p15, 0, r0, c8, c7, 0 @ invalidate I + D TLBs
mcr p15, 0, r0, c2, c0, 2 @ TTB control register
#ifdef CONFIG_SMP
- orr r4, r4, #2 @ set shared pgtable
+ orr r4, r4, #TTB_RGN_WBWA|TTB_S @ mark PTWs shared, outer cacheable
#endif
mcr p15, 0, r4, c2, c0, 1 @ load TTB1
#ifdef CONFIG_VFP
--- /dev/null
+/*
+ * linux/arch/arm/mm/proc-xsc3.S
+ *
+ * Original Author: Matthew Gilbert
+ * Current Maintainer: Deepak Saxena <dsaxena@plexity.net>
+ *
+ * Copyright 2004 (C) Intel Corp.
+ * Copyright 2005 (c) MontaVista Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * MMU functions for the Intel XScale3 Core (XSC3). The XSC3 core is an
+ * extension to Intel's original XScale core that adds the following
+ * features:
+ *
+ * - ARMv6 Supersections
+ * - Low Locality Reference pages (replaces mini-cache)
+ * - 36-bit addressing
+ * - L2 cache
+ * - Cache-coherency if chipset supports it
+ *
+ * Based on orignal XScale code by Nicolas Pitre
+ */
+
+#include <linux/linkage.h>
+#include <linux/init.h>
+#include <asm/assembler.h>
+#include <asm/procinfo.h>
+#include <asm/hardware.h>
+#include <asm/pgtable.h>
+#include <asm/page.h>
+#include <asm/ptrace.h>
+#include "proc-macros.S"
+
+/*
+ * This is the maximum size of an area which will be flushed. If the
+ * area is larger than this, then we flush the whole cache.
+ */
+#define MAX_AREA_SIZE 32768
+
+/*
+ * The cache line size of the I and D cache.
+ */
+#define CACHELINESIZE 32
+
+/*
+ * The size of the data cache.
+ */
+#define CACHESIZE 32768
+
+/*
+ * Run with L2 enabled.
+ */
+#define L2_CACHE_ENABLE 1
+
+/*
+ * Enable the Branch Target Buffer (can cause crashes, see erratum #42.)
+ */
+#define BTB_ENABLE 0
+
+/*
+ * This macro is used to wait for a CP15 write and is needed
+ * when we have to ensure that the last operation to the co-pro
+ * was completed before continuing with operation.
+ */
+ .macro cpwait_ret, lr, rd
+ mrc p15, 0, \rd, c2, c0, 0 @ arbitrary read of cp15
+ sub pc, \lr, \rd, LSR #32 @ wait for completion and
+ @ flush instruction pipeline
+ .endm
+
+/*
+ * This macro cleans & invalidates the entire xsc3 dcache by set & way.
+ */
+
+ .macro clean_d_cache rd, rs
+ mov \rd, #0x1f00
+ orr \rd, \rd, #0x00e0
+1: mcr p15, 0, \rd, c7, c14, 2 @ clean/inv set/way
+ adds \rd, \rd, #0x40000000
+ bcc 1b
+ subs \rd, \rd, #0x20
+ bpl 1b
+ .endm
+
+ .text
+
+/*
+ * cpu_xsc3_proc_init()
+ *
+ * Nothing too exciting at the moment
+ */
+ENTRY(cpu_xsc3_proc_init)
+ mov pc, lr
+
+/*
+ * cpu_xsc3_proc_fin()
+ */
+ENTRY(cpu_xsc3_proc_fin)
+ str lr, [sp, #-4]!
+ mov r0, #PSR_F_BIT|PSR_I_BIT|SVC_MODE
+ msr cpsr_c, r0
+ bl xsc3_flush_kern_cache_all @ clean caches
+ mrc p15, 0, r0, c1, c0, 0 @ ctrl register
+ bic r0, r0, #0x1800 @ ...IZ...........
+ bic r0, r0, #0x0006 @ .............CA.
+ mcr p15, 0, r0, c1, c0, 0 @ disable caches
+ ldr pc, [sp], #4
+
+/*
+ * cpu_xsc3_reset(loc)
+ *
+ * Perform a soft reset of the system. Put the CPU into the
+ * same state as it would be if it had been reset, and branch
+ * to what would be the reset vector.
+ *
+ * loc: location to jump to for soft reset
+ */
+ .align 5
+ENTRY(cpu_xsc3_reset)
+ mov r1, #PSR_F_BIT|PSR_I_BIT|SVC_MODE
+ msr cpsr_c, r1 @ reset CPSR
+ mrc p15, 0, r1, c1, c0, 0 @ ctrl register
+ bic r1, r1, #0x0086 @ ........B....CA.
+ bic r1, r1, #0x3900 @ ..VIZ..S........
+ mcr p15, 0, r1, c1, c0, 0 @ ctrl register
+ mcr p15, 0, ip, c7, c7, 0 @ invalidate I,D caches & BTB
+ bic r1, r1, #0x0001 @ ...............M
+ mcr p15, 0, r1, c1, c0, 0 @ ctrl register
+ @ CAUTION: MMU turned off from this point. We count on the pipeline
+ @ already containing those two last instructions to survive.
+ mcr p15, 0, ip, c8, c7, 0 @ invalidate I & D TLBs
+ mov pc, r0
+
+/*
+ * cpu_xsc3_do_idle()
+ *
+ * Cause the processor to idle
+ *
+ * For now we do nothing but go to idle mode for every case
+ *
+ * XScale supports clock switching, but using idle mode support
+ * allows external hardware to react to system state changes.
+
+ MMG: Come back to this one.
+ */
+ .align 5
+
+ENTRY(cpu_xsc3_do_idle)
+ mov r0, #1
+ mcr p14, 0, r0, c7, c0, 0 @ Go to IDLE
+ mov pc, lr
+
+/* ================================= CACHE ================================ */
+
+/*
+ * flush_user_cache_all()
+ *
+ * Invalidate all cache entries in a particular address
+ * space.
+ */
+ENTRY(xsc3_flush_user_cache_all)
+ /* FALLTHROUGH */
+
+/*
+ * flush_kern_cache_all()
+ *
+ * Clean and invalidate the entire cache.
+ */
+ENTRY(xsc3_flush_kern_cache_all)
+ mov r2, #VM_EXEC
+ mov ip, #0
+__flush_whole_cache:
+ clean_d_cache r0, r1
+ tst r2, #VM_EXEC
+ mcrne p15, 0, ip, c7, c5, 0 @ Invalidate I cache & BTB
+ mcrne p15, 0, ip, c7, c10, 4 @ Drain Write Buffer
+ mcrne p15, 0, ip, c7, c5, 4 @ Prefetch Flush
+ mov pc, lr
+
+/*
+ * flush_user_cache_range(start, end, vm_flags)
+ *
+ * Invalidate a range of cache entries in the specified
+ * address space.
+ *
+ * - start - start address (may not be aligned)
+ * - end - end address (exclusive, may not be aligned)
+ * - vma - vma_area_struct describing address space
+ */
+ .align 5
+ENTRY(xsc3_flush_user_cache_range)
+ mov ip, #0
+ sub r3, r1, r0 @ calculate total size
+ cmp r3, #MAX_AREA_SIZE
+ bhs __flush_whole_cache
+
+1: tst r2, #VM_EXEC
+ mcrne p15, 0, r0, c7, c5, 1 @ Invalidate I cache line
+ mcr p15, 0, r0, c7, c14, 1 @ Clean/invalidate D cache line
+ add r0, r0, #CACHELINESIZE
+ cmp r0, r1
+ blo 1b
+ tst r2, #VM_EXEC
+ mcrne p15, 0, ip, c7, c5, 6 @ Invalidate BTB
+ mcrne p15, 0, ip, c7, c10, 4 @ Drain Write Buffer
+ mcrne p15, 0, ip, c7, c5, 4 @ Prefetch Flush
+ mov pc, lr
+
+/*
+ * coherent_kern_range(start, end)
+ *
+ * Ensure coherency between the Icache and the Dcache in the
+ * region described by start. If you have non-snooping
+ * Harvard caches, you need to implement this function.
+ *
+ * - start - virtual start address
+ * - end - virtual end address
+ *
+ * Note: single I-cache line invalidation isn't used here since
+ * it also trashes the mini I-cache used by JTAG debuggers.
+ */
+ENTRY(xsc3_coherent_kern_range)
+/* FALLTHROUGH */
+ENTRY(xsc3_coherent_user_range)
+ bic r0, r0, #CACHELINESIZE - 1
+1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry
+ add r0, r0, #CACHELINESIZE
+ cmp r0, r1
+ blo 1b
+ mov r0, #0
+ mcr p15, 0, r0, c7, c5, 0 @ Invalidate I cache & BTB
+ mcr p15, 0, r0, c7, c10, 4 @ Drain Write Buffer
+ mcr p15, 0, r0, c7, c5, 4 @ Prefetch Flush
+ mov pc, lr
+
+/*
+ * flush_kern_dcache_page(void *page)
+ *
+ * Ensure no D cache aliasing occurs, either with itself or
+ * the I cache
+ *
+ * - addr - page aligned address
+ */
+ENTRY(xsc3_flush_kern_dcache_page)
+ add r1, r0, #PAGE_SZ
+1: mcr p15, 0, r0, c7, c14, 1 @ Clean/Invalidate D Cache line
+ add r0, r0, #CACHELINESIZE
+ cmp r0, r1
+ blo 1b
+ mov r0, #0
+ mcr p15, 0, r0, c7, c5, 0 @ Invalidate I cache & BTB
+ mcr p15, 0, r0, c7, c10, 4 @ Drain Write Buffer
+ mcr p15, 0, r0, c7, c5, 4 @ Prefetch Flush
+ mov pc, lr
+
+/*
+ * dma_inv_range(start, end)
+ *
+ * Invalidate (discard) the specified virtual address range.
+ * May not write back any entries. If 'start' or 'end'
+ * are not cache line aligned, those lines must be written
+ * back.
+ *
+ * - start - virtual start address
+ * - end - virtual end address
+ */
+ENTRY(xsc3_dma_inv_range)
+ tst r0, #CACHELINESIZE - 1
+ bic r0, r0, #CACHELINESIZE - 1
+ mcrne p15, 0, r0, c7, c10, 1 @ clean L1 D entry
+ mcrne p15, 1, r0, c7, c11, 1 @ clean L2 D entry
+ tst r1, #CACHELINESIZE - 1
+ mcrne p15, 0, r1, c7, c10, 1 @ clean L1 D entry
+ mcrne p15, 1, r1, c7, c11, 1 @ clean L2 D entry
+1: mcr p15, 0, r0, c7, c6, 1 @ invalidate L1 D entry
+ mcr p15, 1, r0, c7, c7, 1 @ Invalidate L2 D cache line
+ add r0, r0, #CACHELINESIZE
+ cmp r0, r1
+ blo 1b
+ mcr p15, 0, r0, c7, c10, 4 @ Drain Write Buffer
+ mov pc, lr
+
+/*
+ * dma_clean_range(start, end)
+ *
+ * Clean the specified virtual address range.
+ *
+ * - start - virtual start address
+ * - end - virtual end address
+ */
+ENTRY(xsc3_dma_clean_range)
+ bic r0, r0, #CACHELINESIZE - 1
+1: mcr p15, 0, r0, c7, c10, 1 @ clean L1 D entry
+ mcr p15, 1, r0, c7, c11, 1 @ clean L2 D entry
+ add r0, r0, #CACHELINESIZE
+ cmp r0, r1
+ blo 1b
+ mcr p15, 0, r0, c7, c10, 4 @ Drain Write Buffer
+ mov pc, lr
+
+/*
+ * dma_flush_range(start, end)
+ *
+ * Clean and invalidate the specified virtual address range.
+ *
+ * - start - virtual start address
+ * - end - virtual end address
+ */
+ENTRY(xsc3_dma_flush_range)
+ bic r0, r0, #CACHELINESIZE - 1
+1: mcr p15, 0, r0, c7, c14, 1 @ Clean/invalidate L1 D cache line
+ mcr p15, 1, r0, c7, c11, 1 @ Clean L2 D cache line
+ mcr p15, 1, r0, c7, c7, 1 @ Invalidate L2 D cache line
+ add r0, r0, #CACHELINESIZE
+ cmp r0, r1
+ blo 1b
+ mcr p15, 0, r0, c7, c10, 4 @ Drain Write Buffer
+ mov pc, lr
+
+ENTRY(xsc3_cache_fns)
+ .long xsc3_flush_kern_cache_all
+ .long xsc3_flush_user_cache_all
+ .long xsc3_flush_user_cache_range
+ .long xsc3_coherent_kern_range
+ .long xsc3_coherent_user_range
+ .long xsc3_flush_kern_dcache_page
+ .long xsc3_dma_inv_range
+ .long xsc3_dma_clean_range
+ .long xsc3_dma_flush_range
+
+ENTRY(cpu_xsc3_dcache_clean_area)
+1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry
+ add r0, r0, #CACHELINESIZE
+ subs r1, r1, #CACHELINESIZE
+ bhi 1b
+ mov pc, lr
+
+/* =============================== PageTable ============================== */
+
+/*
+ * cpu_xsc3_switch_mm(pgd)
+ *
+ * Set the translation base pointer to be as described by pgd.
+ *
+ * pgd: new page tables
+ */
+ .align 5
+ENTRY(cpu_xsc3_switch_mm)
+ clean_d_cache r1, r2
+ mcr p15, 0, ip, c7, c5, 0 @ Invalidate I cache & BTB
+ mcr p15, 0, ip, c7, c10, 4 @ Drain Write Buffer
+ mcr p15, 0, ip, c7, c5, 4 @ Prefetch Flush
+#ifdef L2_CACHE_ENABLE
+ orr r0, r0, #0x18 @ cache the page table in L2
+#endif
+ mcr p15, 0, r0, c2, c0, 0 @ load page table pointer
+ mcr p15, 0, ip, c8, c7, 0 @ invalidate I & D TLBs
+ cpwait_ret lr, ip
+
+/*
+ * cpu_xsc3_set_pte(ptep, pte)
+ *
+ * Set a PTE and flush it out
+ *
+ */
+ .align 5
+ENTRY(cpu_xsc3_set_pte)
+ str r1, [r0], #-2048 @ linux version
+
+ bic r2, r1, #0xff0
+ orr r2, r2, #PTE_TYPE_EXT @ extended page
+
+ eor r3, r1, #L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_WRITE | L_PTE_DIRTY
+
+ tst r3, #L_PTE_USER @ User?
+ orrne r2, r2, #PTE_EXT_AP_URO_SRW @ yes -> user r/o, system r/w
+
+ tst r3, #L_PTE_WRITE | L_PTE_DIRTY @ Write and Dirty?
+ orreq r2, r2, #PTE_EXT_AP_UNO_SRW @ yes -> user n/a, system r/w
+ @ combined with user -> user r/w
+
+#if L2_CACHE_ENABLE
+ @ If its cacheable it needs to be in L2 also.
+ eor ip, r1, #L_PTE_CACHEABLE
+ tst ip, #L_PTE_CACHEABLE
+ orreq r2, r2, #PTE_EXT_TEX(0x5)
+#endif
+
+ tst r3, #L_PTE_PRESENT | L_PTE_YOUNG @ Present and Young?
+ movne r2, #0 @ no -> fault
+
+ str r2, [r0] @ hardware version
+ mov ip, #0
+ mcr p15, 0, r0, c7, c10, 1 @ Clean D cache line mcr
+ mcr p15, 0, ip, c7, c10, 4 @ Drain Write Buffer
+ mov pc, lr
+
+ .ltorg
+
+ .align
+
+ __INIT
+
+ .type __xsc3_setup, #function
+__xsc3_setup:
+ mov r0, #PSR_F_BIT|PSR_I_BIT|SVC_MODE
+ msr cpsr_c, r0
+ mcr p15, 0, ip, c7, c7, 0 @ invalidate I, D caches & BTB
+ mcr p15, 0, ip, c7, c10, 4 @ Drain Write Buffer
+ mcr p15, 0, ip, c7, c5, 4 @ Prefetch Flush
+ mcr p15, 0, ip, c8, c7, 0 @ invalidate I, D TLBs
+#if L2_CACHE_ENABLE
+ orr r4, r4, #0x18 @ cache the page table in L2
+#endif
+ mcr p15, 0, r4, c2, c0, 0 @ load page table pointer
+ mov r0, #1 @ Allow access to CP0 and CP13
+ orr r0, r0, #1 << 13 @ Its undefined whether this
+ mcr p15, 0, r0, c15, c1, 0 @ affects USR or SVC modes
+ mrc p15, 0, r0, c1, c0, 1 @ get auxiliary control reg
+ and r0, r0, #2 @ preserve bit P bit setting
+#if L2_CACHE_ENABLE
+ orr r0, r0, #(1 << 10) @ enable L2 for LLR cache
+#endif
+ mcr p15, 0, r0, c1, c0, 1 @ set auxiliary control reg
+ mrc p15, 0, r0, c1, c0, 0 @ get control register
+ bic r0, r0, #0x0200 @ .... ..R. .... ....
+ bic r0, r0, #0x0002 @ .... .... .... ..A.
+ orr r0, r0, #0x0005 @ .... .... .... .C.M
+#if BTB_ENABLE
+ orr r0, r0, #0x3900 @ ..VI Z..S .... ....
+#else
+ orr r0, r0, #0x3100 @ ..VI ...S .... ....
+#endif
+#if L2_CACHE_ENABLE
+ orr r0, r0, #0x4000000 @ L2 enable
+#endif
+ mov pc, lr
+
+ .size __xsc3_setup, . - __xsc3_setup
+
+ __INITDATA
+
+/*
+ * Purpose : Function pointers used to access above functions - all calls
+ * come through these
+ */
+
+ .type xsc3_processor_functions, #object
+ENTRY(xsc3_processor_functions)
+ .word v5t_early_abort
+ .word cpu_xsc3_proc_init
+ .word cpu_xsc3_proc_fin
+ .word cpu_xsc3_reset
+ .word cpu_xsc3_do_idle
+ .word cpu_xsc3_dcache_clean_area
+ .word cpu_xsc3_switch_mm
+ .word cpu_xsc3_set_pte
+ .size xsc3_processor_functions, . - xsc3_processor_functions
+
+ .section ".rodata"
+
+ .type cpu_arch_name, #object
+cpu_arch_name:
+ .asciz "armv5te"
+ .size cpu_arch_name, . - cpu_arch_name
+
+ .type cpu_elf_name, #object
+cpu_elf_name:
+ .asciz "v5"
+ .size cpu_elf_name, . - cpu_elf_name
+
+ .type cpu_xsc3_name, #object
+cpu_xsc3_name:
+ .asciz "XScale-Core3"
+ .size cpu_xsc3_name, . - cpu_xsc3_name
+
+ .align
+
+ .section ".proc.info.init", #alloc, #execinstr
+
+ .type __xsc3_proc_info,#object
+__xsc3_proc_info:
+ .long 0x69056000
+ .long 0xffffe000
+ .long 0x00000c0e
+ b __xsc3_setup
+ .long cpu_arch_name
+ .long cpu_elf_name
+ .long HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP
+ .long cpu_xsc3_name
+ .long xsc3_processor_functions
+ .long v4wbi_tlb_fns
+ .long xsc3_mc_user_fns
+ .long xsc3_cache_fns
+ .size __xsc3_proc_info, . - __xsc3_proc_info
#include <linux/initrd.h>
#include <linux/bootmem.h>
#include <linux/blkdev.h>
+#include <linux/pfn.h>
#include <asm/segment.h>
#include <asm/mach-types.h>
int bootmap_pages;
};
-#define PFN_DOWN(x) ((x) >> PAGE_SHIFT)
-#define PFN_UP(x) (PAGE_ALIGN(x) >> PAGE_SHIFT)
-#define PFN_SIZE(x) ((x) >> PAGE_SHIFT)
-#define PFN_RANGE(s,e) PFN_SIZE(PAGE_ALIGN((unsigned long)(e)) - \
- (((unsigned long)(s)) & PAGE_MASK))
-
/*
* FIXME: We really want to avoid allocating the bootmap bitmap
* over the top of the initrd. Hopefully, this is located towards
#include <linux/seq_file.h>
#include <linux/tty.h>
#include <linux/utsname.h>
+#include <linux/pfn.h>
#include <asm/setup.h>
init_mm.end_data = (unsigned long) &_edata;
init_mm.brk = (unsigned long) &_end;
-#define PFN_UP(x) (((x) + PAGE_SIZE-1) >> PAGE_SHIFT)
-#define PFN_DOWN(x) ((x) >> PAGE_SHIFT)
-#define PFN_PHYS(x) ((x) << PAGE_SHIFT)
-
/* min_low_pfn points to the start of DRAM, start_pfn points
* to the first DRAM pages after the kernel, and max_low_pfn
* to the end of DRAM.
cost of slightly increased overhead in some places. If unsure say
N here.
+config SCHED_MC
+ bool "Multi-core scheduler support"
+ depends on SMP
+ default y
+ help
+ Multi-core scheduler support improves the CPU scheduler's decision
+ making when dealing with multi-core CPU chips at a cost of slightly
+ increased overhead in some places. If unsure say N here.
+
source "kernel/Kconfig.preempt"
config X86_UP_APIC
ret
store_edid:
+#ifdef CONFIG_FB_FIRMWARE_EDID
pushw %es # just save all registers
pushw %ax
pushw %bx
popw %bx
popw %ax
popw %es
+#endif
ret
# VIDEO_SELECT-only variables
void __cpuinit generic_identify(struct cpuinfo_x86 * c)
{
u32 tfms, xlvl;
- int junk;
+ int ebx;
if (have_cpuid_p()) {
/* Get vendor name */
/* Intel-defined flags: level 0x00000001 */
if ( c->cpuid_level >= 0x00000001 ) {
u32 capability, excap;
- cpuid(0x00000001, &tfms, &junk, &excap, &capability);
+ cpuid(0x00000001, &tfms, &ebx, &excap, &capability);
c->x86_capability[0] = capability;
c->x86_capability[4] = excap;
c->x86 = (tfms >> 8) & 15;
if (c->x86 >= 0x6)
c->x86_model += ((tfms >> 16) & 0xF) << 4;
c->x86_mask = tfms & 15;
+#ifdef CONFIG_SMP
+ c->apicid = phys_pkg_id((ebx >> 24) & 0xFF, 0);
+#else
+ c->apicid = (ebx >> 24) & 0xFF;
+#endif
} else {
/* Have CPUID level 0 only - unheard of */
c->x86 = 4;
cpuid(1, &eax, &ebx, &ecx, &edx);
- c->apicid = phys_pkg_id((ebx >> 24) & 0xFF, 0);
if (!cpu_has(c, X86_FEATURE_HT) || cpu_has(c, X86_FEATURE_CMP_LEGACY))
return;
static unsigned int powernowk8_get (unsigned int cpu)
{
- struct powernow_k8_data *data = powernow_data[cpu];
+ struct powernow_k8_data *data;
cpumask_t oldmask = current->cpus_allowed;
unsigned int khz = 0;
+ data = powernow_data[first_cpu(cpu_core_map[cpu])];
+
+ if (!data)
+ return -EINVAL;
+
set_cpus_allowed(current, cpumask_of_cpu(cpu));
if (smp_processor_id() != cpu) {
printk(KERN_ERR PFX "limiting to CPU %d failed in powernowk8_get\n", cpu);
static void powernow_k8_acpi_pst_values(struct powernow_k8_data *data, unsigned int index);
-#ifndef for_each_cpu_mask
-#define for_each_cpu_mask(i,mask) for (i=0;i<1;i++)
-#endif
-
#ifdef CONFIG_SMP
static inline void define_siblings(int cpu, cpumask_t cpu_sharedcore_mask[])
{
unsigned int trace = 0, l1i = 0, l1d = 0, l2 = 0, l3 = 0; /* Cache sizes */
unsigned int new_l1d = 0, new_l1i = 0; /* Cache sizes from cpuid(4) */
unsigned int new_l2 = 0, new_l3 = 0, i; /* Cache sizes from cpuid(4) */
+ unsigned int l2_id = 0, l3_id = 0, num_threads_sharing, index_msb;
+#ifdef CONFIG_SMP
+ unsigned int cpu = (c == &boot_cpu_data) ? 0 : (c - cpu_data);
+#endif
if (c->cpuid_level > 3) {
static int is_initialized;
break;
case 2:
new_l2 = this_leaf.size/1024;
+ num_threads_sharing = 1 + this_leaf.eax.split.num_threads_sharing;
+ index_msb = get_count_order(num_threads_sharing);
+ l2_id = c->apicid >> index_msb;
break;
case 3:
new_l3 = this_leaf.size/1024;
+ num_threads_sharing = 1 + this_leaf.eax.split.num_threads_sharing;
+ index_msb = get_count_order(num_threads_sharing);
+ l3_id = c->apicid >> index_msb;
break;
default:
break;
}
}
}
- if (c->cpuid_level > 1) {
+ /*
+ * Don't use cpuid2 if cpuid4 is supported. For P4, we use cpuid2 for
+ * trace cache
+ */
+ if ((num_cache_leaves == 0 || c->x86 == 15) && c->cpuid_level > 1) {
/* supports eax=2 call */
int i, j, n;
int regs[4];
unsigned char *dp = (unsigned char *)regs;
+ int only_trace = 0;
+
+ if (num_cache_leaves != 0 && c->x86 == 15)
+ only_trace = 1;
/* Number of times to iterate */
n = cpuid_eax(2) & 0xFF;
while (cache_table[k].descriptor != 0)
{
if (cache_table[k].descriptor == des) {
+ if (only_trace && cache_table[k].cache_type != LVL_TRACE)
+ break;
switch (cache_table[k].cache_type) {
case LVL_1_INST:
l1i += cache_table[k].size;
}
}
}
+ }
- if (new_l1d)
- l1d = new_l1d;
+ if (new_l1d)
+ l1d = new_l1d;
- if (new_l1i)
- l1i = new_l1i;
+ if (new_l1i)
+ l1i = new_l1i;
- if (new_l2)
- l2 = new_l2;
+ if (new_l2) {
+ l2 = new_l2;
+#ifdef CONFIG_SMP
+ cpu_llc_id[cpu] = l2_id;
+#endif
+ }
- if (new_l3)
- l3 = new_l3;
+ if (new_l3) {
+ l3 = new_l3;
+#ifdef CONFIG_SMP
+ cpu_llc_id[cpu] = l3_id;
+#endif
+ }
- if ( trace )
- printk (KERN_INFO "CPU: Trace cache: %dK uops", trace);
- else if ( l1i )
- printk (KERN_INFO "CPU: L1 I cache: %dK", l1i);
- if ( l1d )
- printk(", L1 D cache: %dK\n", l1d);
- else
- printk("\n");
- if ( l2 )
- printk(KERN_INFO "CPU: L2 cache: %dK\n", l2);
- if ( l3 )
- printk(KERN_INFO "CPU: L3 cache: %dK\n", l3);
+ if (trace)
+ printk (KERN_INFO "CPU: Trace cache: %dK uops", trace);
+ else if ( l1i )
+ printk (KERN_INFO "CPU: L1 I cache: %dK", l1i);
- c->x86_cache_size = l3 ? l3 : (l2 ? l2 : (l1i+l1d));
- }
+ if (l1d)
+ printk(", L1 D cache: %dK\n", l1d);
+ else
+ printk("\n");
+
+ if (l2)
+ printk(KERN_INFO "CPU: L2 cache: %dK\n", l2);
+
+ if (l3)
+ printk(KERN_INFO "CPU: L3 cache: %dK\n", l3);
+
+ c->x86_cache_size = l3 ? l3 : (l2 ? l2 : (l1i+l1d));
return l2;
}
unsigned long imbalance = 0;
cpumask_t allowed_mask, target_cpu_mask, tmp;
- for_each_cpu(i) {
+ for_each_possible_cpu(i) {
int package_index;
CPU_IRQ(i) = 0;
if (!cpu_online(i))
else
printk(KERN_ERR "balanced_irq_init: failed to spawn balanced_irq");
failed:
- for_each_cpu(i) {
+ for_each_possible_cpu(i) {
kfree(irq_cpu_data[i].irq_delta);
irq_cpu_data[i].irq_delta = NULL;
kfree(irq_cpu_data[i].last_irq);
return ret;
}
-static int microcode_ioctl (struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
-{
- switch (cmd) {
- /*
- * XXX: will be removed after microcode_ctl
- * is updated to ignore failure of this ioctl()
- */
- case MICROCODE_IOCFREE:
- return 0;
- default:
- return -EINVAL;
- }
- return -EINVAL;
-}
-
static struct file_operations microcode_fops = {
.owner = THIS_MODULE,
.write = microcode_write,
- .ioctl = microcode_ioctl,
.open = microcode_open,
};
if (nmi_watchdog == NMI_LOCAL_APIC)
smp_call_function(nmi_cpu_busy, (void *)&endflag, 0, 0);
- for_each_cpu(cpu)
+ for_each_possible_cpu(cpu)
prev_nmi_count[cpu] = per_cpu(irq_stat, cpu).__nmi_count;
local_irq_enable();
mdelay((10*1000)/nmi_hz); // wait 10 ticks
- for_each_cpu(cpu) {
+ for_each_possible_cpu(cpu) {
#ifdef CONFIG_SMP
/* Check cpu_callin_map here because that is set
after the timer is started. */
* Just reset the alert counters, (other CPUs might be
* spinning on locks we hold):
*/
- for_each_cpu(i)
+ for_each_possible_cpu(i)
alert_counter[i] = 0;
/*
* always switch the stack NMI-atomically, it's safe to use
* smp_processor_id().
*/
- int sum, cpu = smp_processor_id();
+ unsigned int sum;
+ int cpu = smp_processor_id();
sum = per_cpu(irq_stat, cpu).apic_timer_irqs;
#include <linux/kexec.h>
#include <linux/crash_dump.h>
#include <linux/dmi.h>
+#include <linux/pfn.h>
#include <video/edid.h>
/* Core ID of each logical CPU */
int cpu_core_id[NR_CPUS] __read_mostly = {[0 ... NR_CPUS-1] = BAD_APICID};
+/* Last level cache ID of each logical CPU */
+int cpu_llc_id[NR_CPUS] __cpuinitdata = {[0 ... NR_CPUS-1] = BAD_APICID};
+
/* representing HT siblings of each logical CPU */
cpumask_t cpu_sibling_map[NR_CPUS] __read_mostly;
EXPORT_SYMBOL(cpu_sibling_map);
static int cpucount;
+/* maps the cpu to the sched domain representing multi-core */
+cpumask_t cpu_coregroup_map(int cpu)
+{
+ struct cpuinfo_x86 *c = cpu_data + cpu;
+ /*
+ * For perf, we return last level cache shared map.
+ * TBD: when power saving sched policy is added, we will return
+ * cpu_core_map when power saving policy is enabled
+ */
+ return c->llc_shared_map;
+}
+
/* representing cpus for which sibling maps can be computed */
static cpumask_t cpu_sibling_setup_map;
cpu_set(cpu, cpu_sibling_map[i]);
cpu_set(i, cpu_core_map[cpu]);
cpu_set(cpu, cpu_core_map[i]);
+ cpu_set(i, c[cpu].llc_shared_map);
+ cpu_set(cpu, c[i].llc_shared_map);
}
}
} else {
cpu_set(cpu, cpu_sibling_map[cpu]);
}
+ cpu_set(cpu, c[cpu].llc_shared_map);
+
if (current_cpu_data.x86_max_cores == 1) {
cpu_core_map[cpu] = cpu_sibling_map[cpu];
c[cpu].booted_cores = 1;
}
for_each_cpu_mask(i, cpu_sibling_setup_map) {
+ if (cpu_llc_id[cpu] != BAD_APICID &&
+ cpu_llc_id[cpu] == cpu_llc_id[i]) {
+ cpu_set(i, c[cpu].llc_shared_map);
+ cpu_set(cpu, c[i].llc_shared_map);
+ }
if (phys_proc_id[cpu] == phys_proc_id[i]) {
cpu_set(i, cpu_core_map[cpu]);
cpu_set(cpu, cpu_core_map[i]);
.long sys_pselect6
.long sys_ppoll
.long sys_unshare /* 310 */
+ .long sys_set_robust_list
+ .long sys_get_robust_list
#include <linux/module.h>
#include <linux/device.h>
#include <linux/init.h>
+#include <linux/pci.h>
#include <asm/types.h>
#include <asm/timer.h>
#include <asm/smp.h>
#define ACPI_PM_MASK 0xFFFFFF /* limit it to 24 bits */
+static int pmtmr_need_workaround __read_mostly = 1;
+
/*helper function to safely read acpi pm timesource*/
static inline u32 read_pmtmr(void)
{
- u32 v1=0,v2=0,v3=0;
- /* It has been reported that because of various broken
- * chipsets (ICH4, PIIX4 and PIIX4E) where the ACPI PM time
- * source is not latched, so you must read it multiple
- * times to insure a safe value is read.
- */
- do {
- v1 = inl(pmtmr_ioport);
- v2 = inl(pmtmr_ioport);
- v3 = inl(pmtmr_ioport);
- } while ((v1 > v2 && v1 < v3) || (v2 > v3 && v2 < v1)
- || (v3 > v1 && v3 < v2));
-
- /* mask the output to 24 bits */
- return v2 & ACPI_PM_MASK;
+ if (pmtmr_need_workaround) {
+ u32 v1, v2, v3;
+
+ /* It has been reported that because of various broken
+ * chipsets (ICH4, PIIX4 and PIIX4E) where the ACPI PM time
+ * source is not latched, so you must read it multiple
+ * times to insure a safe value is read.
+ */
+ do {
+ v1 = inl(pmtmr_ioport);
+ v2 = inl(pmtmr_ioport);
+ v3 = inl(pmtmr_ioport);
+ } while ((v1 > v2 && v1 < v3) || (v2 > v3 && v2 < v1)
+ || (v3 > v1 && v3 < v2));
+
+ /* mask the output to 24 bits */
+ return v2 & ACPI_PM_MASK;
+ }
+
+ return inl(pmtmr_ioport) & ACPI_PM_MASK;
}
.opts = &timer_pmtmr,
};
+#ifdef CONFIG_PCI
+/*
+ * PIIX4 Errata:
+ *
+ * The power management timer may return improper results when read.
+ * Although the timer value settles properly after incrementing,
+ * while incrementing there is a 3 ns window every 69.8 ns where the
+ * timer value is indeterminate (a 4.2% chance that the data will be
+ * incorrect when read). As a result, the ACPI free running count up
+ * timer specification is violated due to erroneous reads.
+ */
+static int __init pmtmr_bug_check(void)
+{
+ static struct pci_device_id gray_list[] __initdata = {
+ /* these chipsets may have bug. */
+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL,
+ PCI_DEVICE_ID_INTEL_82801DB_0) },
+ { },
+ };
+ struct pci_dev *dev;
+ int pmtmr_has_bug = 0;
+ u8 rev;
+
+ if (cur_timer != &timer_pmtmr || !pmtmr_need_workaround)
+ return 0;
+
+ dev = pci_get_device(PCI_VENDOR_ID_INTEL,
+ PCI_DEVICE_ID_INTEL_82371AB_3, NULL);
+ if (dev) {
+ pci_read_config_byte(dev, PCI_REVISION_ID, &rev);
+ /* the bug has been fixed in PIIX4M */
+ if (rev < 3) {
+ printk(KERN_WARNING "* Found PM-Timer Bug on this "
+ "chipset. Due to workarounds for a bug,\n"
+ "* this time source is slow. Consider trying "
+ "other time sources (clock=)\n");
+ pmtmr_has_bug = 1;
+ }
+ pci_dev_put(dev);
+ }
+
+ if (pci_dev_present(gray_list)) {
+ printk(KERN_WARNING "* This chipset may have PM-Timer Bug. Due"
+ " to workarounds for a bug,\n"
+ "* this time source is slow. If you are sure your timer"
+ " does not have\n"
+ "* this bug, please use \"pmtmr_good\" to disable the "
+ "workaround\n");
+ pmtmr_has_bug = 1;
+ }
+
+ if (!pmtmr_has_bug)
+ pmtmr_need_workaround = 0;
+
+ return 0;
+}
+device_initcall(pmtmr_bug_check);
+#endif
+
+static int __init pmtr_good_setup(char *__str)
+{
+ pmtmr_need_workaround = 0;
+ return 1;
+}
+__setup("pmtmr_good", pmtr_good_setup);
+
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Dominik Brodowski <linux@brodo.de>");
MODULE_DESCRIPTION("Power Management Timer (PMTMR) as primary timing source for x86");
asmlinkage void machine_check(void);
static int kstack_depth_to_print = 24;
-struct notifier_block *i386die_chain;
-static DEFINE_SPINLOCK(die_notifier_lock);
+ATOMIC_NOTIFIER_HEAD(i386die_chain);
int register_die_notifier(struct notifier_block *nb)
{
- int err = 0;
- unsigned long flags;
-
vmalloc_sync_all();
- spin_lock_irqsave(&die_notifier_lock, flags);
- err = notifier_chain_register(&i386die_chain, nb);
- spin_unlock_irqrestore(&die_notifier_lock, flags);
- return err;
+ return atomic_notifier_chain_register(&i386die_chain, nb);
}
EXPORT_SYMBOL(register_die_notifier);
+int unregister_die_notifier(struct notifier_block *nb)
+{
+ return atomic_notifier_chain_unregister(&i386die_chain, nb);
+}
+EXPORT_SYMBOL(unregister_die_notifier);
+
static inline int valid_stack_ptr(struct thread_info *tinfo, void *p)
{
return p > (void *)tinfo &&
printk("VOYAGER SMP: CPU%d lost interrupt %d\n",
cpu, irq);
- for_each_cpu(real_cpu, mask) {
+ for_each_possible_cpu(real_cpu, mask) {
outb(VIC_CPU_MASQUERADE_ENABLE | real_cpu,
VIC_PROCESSOR_ID);
#include <linux/nodemask.h>
#include <linux/module.h>
#include <linux/kexec.h>
+#include <linux/pfn.h>
#include <asm/e820.h>
#include <asm/setup.h>
{
int nid;
- /*
- * Insert nodes into pgdat_list backward so they appear in order.
- * Clobber node 0's links and NULL out pgdat_list before starting.
- */
- pgdat_list = NULL;
- for (nid = MAX_NUMNODES - 1; nid >= 0; nid--) {
- if (!node_online(nid))
- continue;
- NODE_DATA(nid)->pgdat_next = pgdat_list;
- pgdat_list = NODE_DATA(nid);
- }
for_each_online_node(nid) {
unsigned long zones_size[MAX_NR_ZONES] = {0, 0, 0};
printk(KERN_INFO "Mem-info:\n");
show_free_areas();
printk(KERN_INFO "Free swap: %6ldkB\n", nr_swap_pages<<(PAGE_SHIFT-10));
- for_each_pgdat(pgdat) {
+ for_each_online_pgdat(pgdat) {
pgdat_resize_lock(pgdat, &flags);
for (i = 0; i < pgdat->node_spanned_pages; ++i) {
page = pgdat_page_nr(pgdat, i);
static void free_msrs(void)
{
int i;
- for_each_cpu(i) {
+ for_each_possible_cpu(i) {
kfree(cpu_msrs[i].counters);
cpu_msrs[i].counters = NULL;
kfree(cpu_msrs[i].controls);
fpswa_interface_t *fpswa_interface;
EXPORT_SYMBOL(fpswa_interface);
-struct notifier_block *ia64die_chain;
+ATOMIC_NOTIFIER_HEAD(ia64die_chain);
int
register_die_notifier(struct notifier_block *nb)
{
- return notifier_chain_register(&ia64die_chain, nb);
+ return atomic_notifier_chain_register(&ia64die_chain, nb);
}
EXPORT_SYMBOL_GPL(register_die_notifier);
int
unregister_die_notifier(struct notifier_block *nb)
{
- return notifier_chain_unregister(&ia64die_chain, nb);
+ return atomic_notifier_chain_unregister(&ia64die_chain, nb);
}
EXPORT_SYMBOL_GPL(unregister_die_notifier);
}
/**
- * pgdat_insert - insert the pgdat into global pgdat_list
- * @pgdat: the pgdat for a node.
- */
-static void __init pgdat_insert(pg_data_t *pgdat)
-{
- pg_data_t *prev = NULL, *next;
-
- for_each_pgdat(next)
- if (pgdat->node_id < next->node_id)
- break;
- else
- prev = next;
-
- if (prev) {
- prev->pgdat_next = pgdat;
- pgdat->pgdat_next = next;
- } else {
- pgdat->pgdat_next = pgdat_list;
- pgdat_list = pgdat;
- }
-
- return;
-}
-
-/**
* memory_less_nodes - allocate and initialize CPU only nodes pernode
* information.
*/
printk("Mem-info:\n");
show_free_areas();
printk("Free swap: %6ldkB\n", nr_swap_pages<<(PAGE_SHIFT-10));
- for_each_pgdat(pgdat) {
+ for_each_online_pgdat(pgdat) {
unsigned long present;
unsigned long flags;
int shared = 0, cached = 0, reserved = 0;
pfn_offset, zholes_size);
}
- /*
- * Make memory less nodes become a member of the known nodes.
- */
- for_each_node_mask(node, memory_less_mask)
- pgdat_insert(mem_data[node].pgdat);
-
zero_page_memmap_ptr = virt_to_page(ia64_imva(empty_zero_page));
}
kclist_add(&kcore_vmem, (void *)VMALLOC_START, VMALLOC_END-VMALLOC_START);
kclist_add(&kcore_kernel, _stext, _end - _stext);
- for_each_pgdat(pgdat)
+ for_each_online_pgdat(pgdat)
if (pgdat->bdata->node_bootmem_map)
totalram_pages += free_all_bootmem_node(pgdat);
static struct proc_dir_entry
*sn_procfs_create_entry(const char *name, struct proc_dir_entry *parent,
int (*openfunc)(struct inode *, struct file *),
- int (*releasefunc)(struct inode *, struct file *))
+ int (*releasefunc)(struct inode *, struct file *),
+ ssize_t (*write) (struct file *, const char __user *, size_t, loff_t *))
{
struct proc_dir_entry *e = create_proc_entry(name, 0444, parent);
if (e) {
- e->proc_fops = (struct file_operations *)kmalloc(
- sizeof(struct file_operations), GFP_KERNEL);
- if (e->proc_fops) {
- memset(e->proc_fops, 0, sizeof(struct file_operations));
- e->proc_fops->open = openfunc;
- e->proc_fops->read = seq_read;
- e->proc_fops->llseek = seq_lseek;
- e->proc_fops->release = releasefunc;
+ struct file_operations *f;
+
+ f = kzalloc(sizeof(*f), GFP_KERNEL);
+ if (f) {
+ f->open = openfunc;
+ f->read = seq_read;
+ f->llseek = seq_lseek;
+ f->release = releasefunc;
+ f->write = write;
+ e->proc_fops = f;
}
}
void register_sn_procfs(void)
{
static struct proc_dir_entry *sgi_proc_dir = NULL;
- struct proc_dir_entry *e;
BUG_ON(sgi_proc_dir != NULL);
if (!(sgi_proc_dir = proc_mkdir("sgi_sn", NULL)))
return;
sn_procfs_create_entry("partition_id", sgi_proc_dir,
- partition_id_open, single_release);
+ partition_id_open, single_release, NULL);
sn_procfs_create_entry("system_serial_number", sgi_proc_dir,
- system_serial_number_open, single_release);
+ system_serial_number_open, single_release, NULL);
sn_procfs_create_entry("licenseID", sgi_proc_dir,
- licenseID_open, single_release);
+ licenseID_open, single_release, NULL);
- e = sn_procfs_create_entry("sn_force_interrupt", sgi_proc_dir,
- sn_force_interrupt_open, single_release);
- if (e)
- e->proc_fops->write = sn_force_interrupt_write_proc;
+ sn_procfs_create_entry("sn_force_interrupt", sgi_proc_dir,
+ sn_force_interrupt_open, single_release,
+ sn_force_interrupt_write_proc);
sn_procfs_create_entry("coherence_id", sgi_proc_dir,
- coherence_id_open, single_release);
+ coherence_id_open, single_release, NULL);
sn_procfs_create_entry("sn_topology", sgi_proc_dir,
- sn_topology_open, sn_topology_release);
+ sn_topology_open, sn_topology_release, NULL);
}
#endif /* CONFIG_PROC_FS */
#include <linux/tty.h>
#include <linux/cpu.h>
#include <linux/nodemask.h>
+#include <linux/pfn.h>
#include <asm/processor.h>
#include <asm/pgtable.h>
#include <linux/initrd.h>
#include <linux/nodemask.h>
#include <linux/module.h>
+#include <linux/pfn.h>
#include <asm/setup.h>
int nid, i;
mem_prof_t *mp;
- pgdat_list = NULL;
- for (nid = num_online_nodes() - 1 ; nid >= 0 ; nid--) {
- NODE_DATA(nid)->pgdat_next = pgdat_list;
- pgdat_list = NODE_DATA(nid);
- }
-
for_each_online_node(nid) {
mp = &mem_prof[nid];
for (i = 0 ; i < MAX_NR_ZONES ; i++) {
#include <linux/highmem.h>
#include <linux/bitops.h>
#include <linux/nodemask.h>
+#include <linux/pfn.h>
#include <asm/types.h>
#include <asm/processor.h>
#include <asm/page.h>
printk("Mem-info:\n");
show_free_areas();
printk("Free swap: %6ldkB\n",nr_swap_pages<<(PAGE_SHIFT-10));
- for_each_pgdat(pgdat) {
+ for_each_online_pgdat(pgdat) {
unsigned long flags;
pgdat_resize_lock(pgdat, &flags);
for (i = 0; i < pgdat->node_spanned_pages; ++i) {
#include <linux/poll.h>
#include <linux/mc146818rtc.h> /* For struct rtc_time and ioctls, etc */
#include <linux/smp_lock.h>
+#include <linux/bcd.h>
#include <asm/mvme16xhw.h>
#include <asm/io.h>
* ioctls.
*/
-#define BCD2BIN(val) (((val)&15) + ((val)>>4)*10)
-#define BIN2BCD(val) ((((val)/10)<<4) + (val)%10)
-
static const unsigned char days_in_mo[] =
{0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
argptr = prom_getcmdline();
-#if defined(CONFIG_SERIAL_AU1X00_CONSOLE) || defined(CONFIG_SERIAL_8250_CONSOLE)
+#ifdef CONFIG_SERIAL_8250_CONSOLE
if ((argptr = strstr(argptr, "console=")) == NULL) {
argptr = prom_getcmdline();
strcat(argptr, " console=ttyS0,115200");
WRITE_RTC(0xB, byte);
/* set the function pointers */
- rtc_get_time = rtc_ds1386_get_time;
- rtc_set_time = rtc_ds1386_set_time;
+ rtc_mips_get_time = rtc_ds1386_get_time;
+ rtc_mips_set_time = rtc_ds1386_set_time;
}
#include <asm/dec/ioasic_addrs.h>
#include <asm/dec/machtype.h>
-
-/*
- * Returns true if a clock update is in progress
- */
-static inline unsigned char dec_rtc_is_updating(void)
-{
- unsigned char uip;
- unsigned long flags;
-
- spin_lock_irqsave(&rtc_lock, flags);
- uip = (CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP);
- spin_unlock_irqrestore(&rtc_lock, flags);
- return uip;
-}
-
static unsigned long dec_rtc_get_time(void)
{
unsigned int year, mon, day, hour, min, sec, real_year;
- int i;
unsigned long flags;
- /* The Linux interpretation of the DS1287 clock register contents:
- * When the Update-In-Progress (UIP) flag goes from 1 to 0, the
- * RTC registers show the second which has precisely just started.
- * Let's hope other operating systems interpret the RTC the same way.
- */
- /* read RTC exactly on falling edge of update flag */
- for (i = 0; i < 1000000; i++) /* may take up to 1 second... */
- if (dec_rtc_is_updating())
- break;
- for (i = 0; i < 1000000; i++) /* must try at least 2.228 ms */
- if (!dec_rtc_is_updating())
- break;
spin_lock_irqsave(&rtc_lock, flags);
- /* Isn't this overkill? UIP above should guarantee consistency */
+
do {
sec = CMOS_READ(RTC_SECONDS);
min = CMOS_READ(RTC_MINUTES);
day = CMOS_READ(RTC_DAY_OF_MONTH);
mon = CMOS_READ(RTC_MONTH);
year = CMOS_READ(RTC_YEAR);
+ /*
+ * The PROM will reset the year to either '72 or '73.
+ * Therefore we store the real year separately, in one
+ * of unused BBU RAM locations.
+ */
+ real_year = CMOS_READ(RTC_DEC_YEAR);
} while (sec != CMOS_READ(RTC_SECONDS));
+
+ spin_unlock_irqrestore(&rtc_lock, flags);
+
if (!(CMOS_READ(RTC_CONTROL) & RTC_DM_BINARY) || RTC_ALWAYS_BCD) {
sec = BCD2BIN(sec);
min = BCD2BIN(min);
mon = BCD2BIN(mon);
year = BCD2BIN(year);
}
- /*
- * The PROM will reset the year to either '72 or '73.
- * Therefore we store the real year separately, in one
- * of unused BBU RAM locations.
- */
- real_year = CMOS_READ(RTC_DEC_YEAR);
- spin_unlock_irqrestore(&rtc_lock, flags);
+
year += real_year - 72 + 2000;
return mktime(year, mon, day, hour, min, sec);
void __init dec_time_init(void)
{
- rtc_get_time = dec_rtc_get_time;
- rtc_set_mmss = dec_rtc_set_mmss;
+ rtc_mips_get_time = dec_rtc_get_time;
+ rtc_mips_set_mmss = dec_rtc_set_mmss;
mips_timer_state = dec_timer_state;
mips_timer_ack = dec_timer_ack;
local_irq_restore(flags);
- rtc_get_time = it8172_rtc_get_time;
- rtc_set_time = it8172_rtc_set_time;
+ rtc_mips_get_time = it8172_rtc_get_time;
+ rtc_mips_set_time = it8172_rtc_set_time;
}
#define ALLINTS (IE_IRQ0 | IE_IRQ1 | IE_IRQ2 | IE_IRQ3 | IE_IRQ4 | IE_IRQ5)
extern unsigned long __init prom_get_memsize(void);
extern void __init it8172_init_ram_resource(unsigned long memsize);
-#define PFN_UP(x) (((x) + PAGE_SIZE-1) >> PAGE_SHIFT)
-#define PFN_ALIGN(x) (((unsigned long)(x) + (PAGE_SIZE - 1)) & PAGE_MASK)
-
const char *get_system_type(void)
{
return "Globespan IVR";
extern unsigned long __init prom_get_memsize(void);
extern void __init it8172_init_ram_resource(unsigned long memsize);
-#define PFN_UP(x) (((x) + PAGE_SIZE-1) >> PAGE_SHIFT)
-#define PFN_ALIGN(x) (((unsigned long)(x) + (PAGE_SIZE - 1)) & PAGE_MASK)
-
const char *get_system_type(void)
{
return "ITE QED-4N-S01B";
db_assert((rtc_base & 0xe0000000) == KSEG1);
/* set the function pointers */
- rtc_get_time = rtc_ds1742_get_time;
- rtc_set_time = rtc_ds1742_set_time;
+ rtc_mips_get_time = rtc_ds1742_get_time;
+ rtc_mips_set_time = rtc_ds1742_set_time;
/* clear oscillator stop bit */
CMOS_WRITE(RTC_READ, RTC_CONTROL);
#include <linux/highmem.h>
#include <linux/console.h>
#include <linux/mmzone.h>
+#include <linux/pfn.h>
#include <asm/addrspace.h>
#include <asm/bootinfo.h>
return 0;
}
-#define PFN_UP(x) (((x) + PAGE_SIZE - 1) >> PAGE_SHIFT)
-#define PFN_DOWN(x) ((x) >> PAGE_SHIFT)
-#define PFN_PHYS(x) ((x) << PAGE_SHIFT)
-
#define MAXMEM HIGHMEM_START
#define MAXMEM_PFN PFN_DOWN(MAXMEM)
}
}
-#undef PFN_UP
-#undef PFN_DOWN
-#undef PFN_PHYS
-
#undef MAXMEM
#undef MAXMEM_PFN
return 0;
}
-unsigned long (*rtc_get_time)(void) = null_rtc_get_time;
-int (*rtc_set_time)(unsigned long) = null_rtc_set_time;
-int (*rtc_set_mmss)(unsigned long);
+unsigned long (*rtc_mips_get_time)(void) = null_rtc_get_time;
+int (*rtc_mips_set_time)(unsigned long) = null_rtc_set_time;
+int (*rtc_mips_set_mmss)(unsigned long);
/* usecs per counter cycle, shifted to left by 32 bits */
/*
* If we have an externally synchronized Linux clock, then update
- * CMOS clock accordingly every ~11 minutes. rtc_set_time() has to be
+ * CMOS clock accordingly every ~11 minutes. rtc_mips_set_time() has to be
* called as close as possible to 500 ms before the new second starts.
*/
if (ntp_synced() &&
xtime.tv_sec > last_rtc_update + 660 &&
(xtime.tv_nsec / 1000) >= 500000 - ((unsigned) TICK_SIZE) / 2 &&
(xtime.tv_nsec / 1000) <= 500000 + ((unsigned) TICK_SIZE) / 2) {
- if (rtc_set_mmss(xtime.tv_sec) == 0) {
+ if (rtc_mips_set_mmss(xtime.tv_sec) == 0) {
last_rtc_update = xtime.tv_sec;
} else {
/* do it again in 60 s */
* b) (optional) calibrate and set the mips_hpt_frequency
* (only needed if you intended to use fixed_rate_gettimeoffset
* or use cpu counter as timer interrupt source)
- * 2) setup xtime based on rtc_get_time().
+ * 2) setup xtime based on rtc_mips_get_time().
* 3) choose a appropriate gettimeoffset routine.
* 4) calculate a couple of cached variables for later usage
* 5) board_timer_setup() -
if (board_time_init)
board_time_init();
- if (!rtc_set_mmss)
- rtc_set_mmss = rtc_set_time;
+ if (!rtc_mips_set_mmss)
+ rtc_mips_set_mmss = rtc_mips_set_time;
- xtime.tv_sec = rtc_get_time();
+ xtime.tv_sec = rtc_mips_get_time();
xtime.tv_nsec = 0;
set_normalized_timespec(&wall_to_monotonic,
EXPORT_SYMBOL(rtc_lock);
EXPORT_SYMBOL(to_tm);
-EXPORT_SYMBOL(rtc_set_time);
-EXPORT_SYMBOL(rtc_get_time);
+EXPORT_SYMBOL(rtc_mips_set_time);
+EXPORT_SYMBOL(rtc_mips_get_time);
unsigned long long sched_clock(void)
{
/* Set up panic notifier */
for (i = 0; i < sizeof(lasat_panic_block) / sizeof(struct notifier_block); i++)
- notifier_chain_register(&panic_notifier_list, &lasat_panic_block[i]);
+ atomic_notifier_chain_register(&panic_notifier_list,
+ &lasat_panic_block[i]);
lasat_reboot_setup();
#ifdef CONFIG_DS1603
ds1603 = &ds_defs[mips_machtype];
- rtc_get_time = ds1603_read;
- rtc_set_time = ds1603_set;
+ rtc_mips_get_time = ds1603_read;
+ rtc_mips_set_time = ds1603_set;
#endif
#ifdef DYNAMIC_SERIAL_INIT
board_time_init = mips_time_init;
board_timer_setup = mips_timer_setup;
- rtc_get_time = mips_rtc_get_time;
+ rtc_mips_get_time = mips_rtc_get_time;
}
static void __init serial_init(void)
/* References to section boundaries */
extern char _end;
-#define PFN_ALIGN(x) (((unsigned long)(x) + (PAGE_SIZE - 1)) & PAGE_MASK)
-
-
struct prom_pmemblock * __init prom_getmdesc(void)
{
char *memsize_str;
mdesc[3].type = yamon_dontuse;
mdesc[3].base = 0x00100000;
- mdesc[3].size = CPHYSADDR(PFN_ALIGN(&_end)) - mdesc[3].base;
+ mdesc[3].size = CPHYSADDR(PAGE_ALIGN(&_end)) - mdesc[3].base;
mdesc[4].type = yamon_free;
- mdesc[4].base = CPHYSADDR(PFN_ALIGN(&_end));
+ mdesc[4].base = CPHYSADDR(PAGE_ALIGN(&_end));
mdesc[4].size = memsize - mdesc[4].base;
return &mdesc[0];
board_time_init = mips_time_init;
board_timer_setup = mips_timer_setup;
- rtc_get_time = mips_rtc_get_time;
+ rtc_mips_get_time = mips_rtc_get_time;
}
/* References to section boundaries */
extern char _end;
-#define PFN_ALIGN(x) (((unsigned long)(x) + (PAGE_SIZE - 1)) & PAGE_MASK)
-
-
struct prom_pmemblock * __init prom_getmdesc(void)
{
unsigned int memsize;
mdesc[2].type = simmem_reserved;
mdesc[2].base = 0x00100000;
- mdesc[2].size = CPHYSADDR(PFN_ALIGN(&_end)) - mdesc[2].base;
+ mdesc[2].size = CPHYSADDR(PAGE_ALIGN(&_end)) - mdesc[2].base;
mdesc[3].type = simmem_free;
- mdesc[3].base = CPHYSADDR(PFN_ALIGN(&_end));
+ mdesc[3].base = CPHYSADDR(PAGE_ALIGN(&_end));
mdesc[3].size = memsize - mdesc[3].base;
return &mdesc[0];
#include <linux/highmem.h>
#include <linux/swap.h>
#include <linux/proc_fs.h>
+#include <linux/pfn.h>
#include <asm/bootinfo.h>
#include <asm/cachectl.h>
free_area_init(zones_size);
}
-#define PFN_UP(x) (((x) + PAGE_SIZE - 1) >> PAGE_SHIFT)
-#define PFN_DOWN(x) ((x) >> PAGE_SHIFT)
-
static inline int page_is_ram(unsigned long pagenr)
{
int i;
mips_hpt_frequency = cpu_clock / 2;
board_timer_setup = momenco_timer_setup;
- rtc_get_time = m48t37y_get_time;
- rtc_set_time = m48t37y_set_time;
+ rtc_mips_get_time = m48t37y_get_time;
+ rtc_mips_set_time = m48t37y_set_time;
}
static struct resource mv_pci_io_mem0_resource = {
#include <linux/bootmem.h>
#include <linux/mv643xx.h>
#include <linux/pm.h>
+#include <linux/bcd.h>
#include <asm/time.h>
#include <asm/page.h>
add_wired_entry(ENTRYLO(0xfc000000), ENTRYLO(0xfd000000), (signed)0xfc000000, PM_16M);
}
-#define CONV_BCD_TO_BIN(val) (((val) & 0xf) + (((val) >> 4) * 10))
-#define CONV_BIN_TO_BCD(val) (((val) % 10) + (((val) / 10) << 4))
-
unsigned long m48t37y_get_time(void)
{
unsigned int year, month, day, hour, min, sec;
/* stop the update */
rtc_base[0x7ff8] = 0x40;
- year = CONV_BCD_TO_BIN(rtc_base[0x7fff]);
- year += CONV_BCD_TO_BIN(rtc_base[0x7ff1]) * 100;
+ year = BCD2BIN(rtc_base[0x7fff]);
+ year += BCD2BIN(rtc_base[0x7ff1]) * 100;
- month = CONV_BCD_TO_BIN(rtc_base[0x7ffe]);
+ month = BCD2BIN(rtc_base[0x7ffe]);
- day = CONV_BCD_TO_BIN(rtc_base[0x7ffd]);
+ day = BCD2BIN(rtc_base[0x7ffd]);
- hour = CONV_BCD_TO_BIN(rtc_base[0x7ffb]);
- min = CONV_BCD_TO_BIN(rtc_base[0x7ffa]);
- sec = CONV_BCD_TO_BIN(rtc_base[0x7ff9]);
+ hour = BCD2BIN(rtc_base[0x7ffb]);
+ min = BCD2BIN(rtc_base[0x7ffa]);
+ sec = BCD2BIN(rtc_base[0x7ff9]);
/* start the update */
rtc_base[0x7ff8] = 0x00;
rtc_base[0x7ff8] = 0x80;
/* year */
- rtc_base[0x7fff] = CONV_BIN_TO_BCD(tm.tm_year % 100);
- rtc_base[0x7ff1] = CONV_BIN_TO_BCD(tm.tm_year / 100);
+ rtc_base[0x7fff] = BIN2BCD(tm.tm_year % 100);
+ rtc_base[0x7ff1] = BIN2BCD(tm.tm_year / 100);
/* month */
- rtc_base[0x7ffe] = CONV_BIN_TO_BCD(tm.tm_mon);
+ rtc_base[0x7ffe] = BIN2BCD(tm.tm_mon);
/* day */
- rtc_base[0x7ffd] = CONV_BIN_TO_BCD(tm.tm_mday);
+ rtc_base[0x7ffd] = BIN2BCD(tm.tm_mday);
/* hour/min/sec */
- rtc_base[0x7ffb] = CONV_BIN_TO_BCD(tm.tm_hour);
- rtc_base[0x7ffa] = CONV_BIN_TO_BCD(tm.tm_min);
- rtc_base[0x7ff9] = CONV_BIN_TO_BCD(tm.tm_sec);
+ rtc_base[0x7ffb] = BIN2BCD(tm.tm_hour);
+ rtc_base[0x7ffa] = BIN2BCD(tm.tm_min);
+ rtc_base[0x7ff9] = BIN2BCD(tm.tm_sec);
/* day of week -- not really used, but let's keep it up-to-date */
- rtc_base[0x7ffc] = CONV_BIN_TO_BCD(tm.tm_wday + 1);
+ rtc_base[0x7ffc] = BIN2BCD(tm.tm_wday + 1);
/* disable writing */
rtc_base[0x7ff8] = 0x00;
mips_hpt_frequency = cpu_clock / 2;
board_timer_setup = momenco_timer_setup;
- rtc_get_time = m48t37y_get_time;
- rtc_set_time = m48t37y_set_time;
+ rtc_mips_get_time = m48t37y_get_time;
+ rtc_mips_set_time = m48t37y_set_time;
}
/*
printk("momenco_time_init cpu_clock=%d\n", cpu_clock);
board_timer_setup = momenco_timer_setup;
- rtc_get_time = m48t37y_get_time;
- rtc_set_time = m48t37y_set_time;
+ rtc_mips_get_time = m48t37y_get_time;
+ rtc_mips_set_time = m48t37y_set_time;
}
void __init plat_setup(void)
if (!m48t37_base)
printk(KERN_ERR "Mapping the RTC failed\n");
- rtc_get_time = m48t37y_get_time;
- rtc_set_time = m48t37y_set_time;
+ rtc_mips_get_time = m48t37y_get_time;
+ rtc_mips_set_time = m48t37y_set_time;
write_seqlock(&xtime_lock);
xtime.tv_sec = m48t37y_get_time();
request_irq(SGI_PANEL_IRQ, panel_int, 0, "Front Panel", NULL);
init_timer(&blink_timer);
blink_timer.function = blink_timeout;
- notifier_chain_register(&panic_notifier_list, &panic_block);
+ atomic_notifier_chain_register(&panic_notifier_list, &panic_block);
return 0;
}
void __init ip22_time_init(void)
{
/* setup hookup functions */
- rtc_get_time = indy_rtc_get_time;
- rtc_set_time = indy_rtc_set_time;
+ rtc_mips_get_time = indy_rtc_get_time;
+ rtc_mips_set_time = indy_rtc_set_time;
board_time_init = indy_time_init;
board_timer_setup = indy_timer_setup;
#include <linux/nodemask.h>
#include <linux/swap.h>
#include <linux/bootmem.h>
+#include <linux/pfn.h>
#include <asm/page.h>
#include <asm/sections.h>
#include <asm/sn/sn_private.h>
-#define PFN_UP(x) (((x) + PAGE_SIZE-1) >> PAGE_SHIFT)
-
#define SLOT_PFNSHIFT (SLOT_SHIFT - PAGE_SHIFT)
#define PFN_NASIDSHFT (NASID_SHFT - PAGE_SHIFT)
init_timer(&blink_timer);
blink_timer.function = blink_timeout;
- notifier_chain_register(&panic_notifier_list, &panic_block);
+ atomic_notifier_chain_register(&panic_notifier_list, &panic_block);
request_irq(MACEISA_RTC_IRQ, ip32_rtc_int, 0, "rtc", NULL);
{
board_be_init = ip32_be_init;
- rtc_get_time = mc146818_get_cmos_time;
- rtc_set_mmss = mc146818_set_rtc_mmss;
+ rtc_mips_get_time = mc146818_get_cmos_time;
+ rtc_mips_set_mmss = mc146818_set_rtc_mmss;
board_time_init = ip32_time_init;
board_timer_setup = ip32_timer_setup;
if (xicor_probe()) {
printk("swarm setup: Xicor 1241 RTC detected.\n");
- rtc_get_time = xicor_get_time;
- rtc_set_time = xicor_set_time;
+ rtc_mips_get_time = xicor_get_time;
+ rtc_mips_set_time = xicor_set_time;
}
if (m41t81_probe()) {
printk("swarm setup: M41T81 RTC detected.\n");
- rtc_get_time = m41t81_get_time;
- rtc_set_time = m41t81_set_time;
+ rtc_mips_get_time = m41t81_get_time;
+ rtc_mips_set_time = m41t81_set_time;
}
printk("This kernel optimized for "
static inline void sni_pcimt_time_init(void)
{
- rtc_get_time = mc146818_get_cmos_time;
- rtc_set_time = mc146818_set_rtc_mmss;
+ rtc_mips_get_time = mc146818_get_cmos_time;
+ rtc_mips_set_time = mc146818_set_rtc_mmss;
}
void __init plat_setup(void)
#ifdef CONFIG_RTC_DS1742
- rtc_get_time = rtc_ds1742_get_time;
- rtc_set_time = rtc_ds1742_set_time;
+ rtc_mips_get_time = rtc_ds1742_get_time;
+ rtc_mips_set_time = rtc_ds1742_set_time;
TOSHIBA_RBTX4927_SETUP_DPRINTK(TOSHIBA_RBTX4927_SETUP_TIME_INIT,
":rtc_ds1742_init()-\n");
#include <linux/string.h>
#include <linux/rtc.h>
#include <linux/time.h>
+#include <linux/bcd.h>
#include <asm/time.h>
#include <asm/tx4938/spi.h>
inbufs, incounts, outbufs, outcounts, 0);
}
-/*
- * Conversion between binary and BCD.
- */
-#ifndef BCD_TO_BIN
-#define BCD_TO_BIN(val) ((val)=((val)&15) + ((val)>>4)*10)
-#endif
-
-#ifndef BIN_TO_BCD
-#define BIN_TO_BCD(val) ((val)=(((val)/10)<<4) + (val)%10)
-#endif
-
/* RTC-dependent code for time.c */
static int
srtc_24h = 1;
/* set the function pointers */
- rtc_get_time = rtc_rx5c348_get_time;
- rtc_set_time = rtc_rx5c348_set_time;
+ rtc_mips_get_time = rtc_rx5c348_get_time;
+ rtc_mips_set_time = rtc_rx5c348_set_time;
}
if (handle) {
/* initialize panic notifier chain */
- notifier_chain_register(&panic_notifier_list, &pdc_chassis_panic_block);
+ atomic_notifier_chain_register(&panic_notifier_list,
+ &pdc_chassis_panic_block);
/* initialize reboot notifier chain */
register_reboot_notifier(&pdc_chassis_reboot_block);
panic_timeout = 180;
if (ppc_md.panic)
- notifier_chain_register(&panic_notifier_list, &ppc64_panic_block);
+ atomic_notifier_chain_register(&panic_notifier_list,
+ &ppc64_panic_block);
init_mm.start_code = PAGE_OFFSET;
init_mm.end_code = (unsigned long) _etext;
EXPORT_SYMBOL(__debugger_fault_handler);
#endif
-struct notifier_block *powerpc_die_chain;
-static DEFINE_SPINLOCK(die_notifier_lock);
+ATOMIC_NOTIFIER_HEAD(powerpc_die_chain);
int register_die_notifier(struct notifier_block *nb)
{
- int err = 0;
- unsigned long flags;
+ return atomic_notifier_chain_register(&powerpc_die_chain, nb);
+}
+EXPORT_SYMBOL(register_die_notifier);
- spin_lock_irqsave(&die_notifier_lock, flags);
- err = notifier_chain_register(&powerpc_die_chain, nb);
- spin_unlock_irqrestore(&die_notifier_lock, flags);
- return err;
+int unregister_die_notifier(struct notifier_block *nb)
+{
+ return atomic_notifier_chain_unregister(&powerpc_die_chain, nb);
}
+EXPORT_SYMBOL(unregister_die_notifier);
/*
* Trap & Exception support
printk("Mem-info:\n");
show_free_areas();
printk("Free swap: %6ldkB\n", nr_swap_pages<<(PAGE_SHIFT-10));
- for_each_pgdat(pgdat) {
+ for_each_online_pgdat(pgdat) {
unsigned long flags;
pgdat_resize_lock(pgdat, &flags);
for (i = 0; i < pgdat->node_spanned_pages; i++) {
max_mapnr = max_pfn;
totalram_pages += free_all_bootmem();
#endif
- for_each_pgdat(pgdat) {
+ for_each_online_pgdat(pgdat) {
for (i = 0; i < pgdat->node_spanned_pages; i++) {
if (!pfn_valid(pgdat->node_start_pfn + i))
continue;
static int
spufs_new_file(struct super_block *sb, struct dentry *dentry,
- struct file_operations *fops, int mode,
+ const struct file_operations *fops, int mode,
struct spu_context *ctx)
{
static struct inode_operations spufs_file_iops = {
void chrp_get_rtc_time(struct rtc_time *tm)
{
unsigned int year, mon, day, hour, min, sec;
- int uip, i;
- /* The Linux interpretation of the CMOS clock register contents:
- * When the Update-In-Progress (UIP) flag goes from 1 to 0, the
- * RTC registers show the second which has precisely just started.
- * Let's hope other operating systems interpret the RTC the same way.
- */
-
- /* Since the UIP flag is set for about 2.2 ms and the clock
- * is typically written with a precision of 1 jiffy, trying
- * to obtain a precision better than a few milliseconds is
- * an illusion. Only consistency is interesting, this also
- * allows to use the routine for /dev/rtc without a potential
- * 1 second kernel busy loop triggered by any reader of /dev/rtc.
- */
-
- for ( i = 0; i<1000000; i++) {
- uip = chrp_cmos_clock_read(RTC_FREQ_SELECT);
+ do {
sec = chrp_cmos_clock_read(RTC_SECONDS);
min = chrp_cmos_clock_read(RTC_MINUTES);
hour = chrp_cmos_clock_read(RTC_HOURS);
day = chrp_cmos_clock_read(RTC_DAY_OF_MONTH);
mon = chrp_cmos_clock_read(RTC_MONTH);
year = chrp_cmos_clock_read(RTC_YEAR);
- uip |= chrp_cmos_clock_read(RTC_FREQ_SELECT);
- if ((uip & RTC_UIP)==0) break;
- }
+ } while (sec != chrp_cmos_clock_read(RTC_SECONDS));
if (!(chrp_cmos_clock_read(RTC_CONTROL) & RTC_DM_BINARY) || RTC_ALWAYS_BCD) {
BCD_TO_BIN(sec);
void maple_get_rtc_time(struct rtc_time *tm)
{
- int uip, i;
-
- /* The Linux interpretation of the CMOS clock register contents:
- * When the Update-In-Progress (UIP) flag goes from 1 to 0, the
- * RTC registers show the second which has precisely just started.
- * Let's hope other operating systems interpret the RTC the same way.
- */
-
- /* Since the UIP flag is set for about 2.2 ms and the clock
- * is typically written with a precision of 1 jiffy, trying
- * to obtain a precision better than a few milliseconds is
- * an illusion. Only consistency is interesting, this also
- * allows to use the routine for /dev/rtc without a potential
- * 1 second kernel busy loop triggered by any reader of /dev/rtc.
- */
-
- for (i = 0; i<1000000; i++) {
- uip = maple_clock_read(RTC_FREQ_SELECT);
+ do {
tm->tm_sec = maple_clock_read(RTC_SECONDS);
tm->tm_min = maple_clock_read(RTC_MINUTES);
tm->tm_hour = maple_clock_read(RTC_HOURS);
tm->tm_mday = maple_clock_read(RTC_DAY_OF_MONTH);
tm->tm_mon = maple_clock_read(RTC_MONTH);
tm->tm_year = maple_clock_read(RTC_YEAR);
- uip |= maple_clock_read(RTC_FREQ_SELECT);
- if ((uip & RTC_UIP)==0)
- break;
- }
+ } while (tm->tm_sec != maple_clock_read(RTC_SECONDS));
if (!(maple_clock_read(RTC_CONTROL) & RTC_DM_BINARY)
|| RTC_ALWAYS_BCD) {
return parent;
}
-static struct notifier_block *pSeries_reconfig_chain;
+static BLOCKING_NOTIFIER_HEAD(pSeries_reconfig_chain);
int pSeries_reconfig_notifier_register(struct notifier_block *nb)
{
- return notifier_chain_register(&pSeries_reconfig_chain, nb);
+ return blocking_notifier_chain_register(&pSeries_reconfig_chain, nb);
}
void pSeries_reconfig_notifier_unregister(struct notifier_block *nb)
{
- notifier_chain_unregister(&pSeries_reconfig_chain, nb);
+ blocking_notifier_chain_unregister(&pSeries_reconfig_chain, nb);
}
static int pSeries_reconfig_add_node(const char *path, struct property *proplist)
goto out_err;
}
- err = notifier_call_chain(&pSeries_reconfig_chain,
+ err = blocking_notifier_call_chain(&pSeries_reconfig_chain,
PSERIES_RECONFIG_ADD, np);
if (err == NOTIFY_BAD) {
printk(KERN_ERR "Failed to add device node %s\n", path);
remove_node_proc_entries(np);
- notifier_call_chain(&pSeries_reconfig_chain,
+ blocking_notifier_call_chain(&pSeries_reconfig_chain,
PSERIES_RECONFIG_REMOVE, np);
of_detach_node(np);
return single_open(file, ppc_htab_show, NULL);
}
-struct file_operations ppc_htab_operations = {
+const struct file_operations ppc_htab_operations = {
.open = ppc_htab_open,
.read = seq_read,
.llseek = seq_lseek,
hex = 0xfff;
if (!notifier_installed) {
++notifier_installed;
- notifier_chain_register(&panic_notifier_list,
+ atomic_notifier_chain_register(&panic_notifier_list,
&ibm_statusled_block);
}
}
/*
* Need to know about CPUs going idle?
*/
-static struct notifier_block *idle_chain;
+static ATOMIC_NOTIFIER_HEAD(idle_chain);
int register_idle_notifier(struct notifier_block *nb)
{
- return notifier_chain_register(&idle_chain, nb);
+ return atomic_notifier_chain_register(&idle_chain, nb);
}
EXPORT_SYMBOL(register_idle_notifier);
int unregister_idle_notifier(struct notifier_block *nb)
{
- return notifier_chain_unregister(&idle_chain, nb);
+ return atomic_notifier_chain_unregister(&idle_chain, nb);
}
EXPORT_SYMBOL(unregister_idle_notifier);
/* disable monitor call class 0 */
__ctl_clear_bit(8, 15);
- notifier_call_chain(&idle_chain, CPU_NOT_IDLE,
+ atomic_notifier_call_chain(&idle_chain, CPU_NOT_IDLE,
(void *)(long) smp_processor_id());
}
return;
}
- rc = notifier_call_chain(&idle_chain, CPU_IDLE, (void *)(long) cpu);
+ rc = atomic_notifier_call_chain(&idle_chain,
+ CPU_IDLE, (void *)(long) cpu);
if (rc != NOTIFY_OK && rc != NOTIFY_DONE)
BUG();
if (rc != NOTIFY_OK) {
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/time.h>
+#include <linux/bcd.h>
#include <linux/mc146818rtc.h>
-#ifndef BCD_TO_BIN
-#define BCD_TO_BIN(val) ((val)=((val)&15) + ((val)>>4)*10)
-#endif
-
-#ifndef BIN_TO_BCD
-#define BIN_TO_BCD(val) ((val)=(((val)/10)<<4) + (val)%10)
-#endif
-
-/* arc/i386/kernel/time.c */
unsigned long get_cmos_time(void)
{
unsigned int year, mon, day, hour, min, sec;
- int i;
spin_lock(&rtc_lock);
- /* The Linux interpretation of the CMOS clock register contents:
- * When the Update-In-Progress (UIP) flag goes from 1 to 0, the
- * RTC registers show the second which has precisely just started.
- * Let's hope other operating systems interpret the RTC the same way.
- */
- /* read RTC exactly on falling edge of update flag */
- for (i = 0 ; i < 1000000 ; i++) /* may take up to 1 second... */
- if (CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP)
- break;
- for (i = 0 ; i < 1000000 ; i++) /* must try at least 2.228 ms */
- if (!(CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP))
- break;
- do { /* Isn't this overkill ? UIP above should guarantee consistency */
+
+ do {
sec = CMOS_READ(RTC_SECONDS);
min = CMOS_READ(RTC_MINUTES);
hour = CMOS_READ(RTC_HOURS);
mon = CMOS_READ(RTC_MONTH);
year = CMOS_READ(RTC_YEAR);
} while (sec != CMOS_READ(RTC_SECONDS));
- if (!(CMOS_READ(RTC_CONTROL) & RTC_DM_BINARY) || RTC_ALWAYS_BCD)
- {
- BCD_TO_BIN(sec);
- BCD_TO_BIN(min);
- BCD_TO_BIN(hour);
- BCD_TO_BIN(day);
- BCD_TO_BIN(mon);
- BCD_TO_BIN(year);
- }
+
+ if (!(CMOS_READ(RTC_CONTROL) & RTC_DM_BINARY) || RTC_ALWAYS_BCD) {
+ BCD_TO_BIN(sec);
+ BCD_TO_BIN(min);
+ BCD_TO_BIN(hour);
+ BCD_TO_BIN(day);
+ BCD_TO_BIN(mon);
+ BCD_TO_BIN(year);
+ }
+
spin_unlock(&rtc_lock);
- if ((year += 1900) < 1970)
+
+ year += 1900;
+ if (year < 1970)
year += 100;
+
return mktime(year, mon, day, hour, min, sec);
}
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/time.h>
+#include <linux/bcd.h>
#include <asm/io.h>
#include <linux/rtc.h>
#include <linux/spinlock.h>
#define RTC_BUSY 1
#define RTC_STOP 2
-#ifndef BCD_TO_BIN
-#define BCD_TO_BIN(val) ((val)=((val)&15) + ((val)>>4)*10)
-#endif
-
-#ifndef BIN_TO_BCD
-#define BIN_TO_BCD(val) ((val)=(((val)/10)<<4) + (val)%10)
-#endif
-
extern void (*rtc_get_time)(struct timespec *);
extern int (*rtc_set_time)(const time_t);
extern spinlock_t rtc_lock;
unsigned long get_cmos_time(void)
{
unsigned int year, mon, day, hour, min, sec;
- int i;
spin_lock(&rtc_lock);
again:
- for (i = 0 ; i < 1000000 ; i++) /* may take up to 1 second... */
- if (!(ctrl_inb(RTC_CTL) & RTC_BUSY))
- break;
do {
sec = (ctrl_inb(RTC_SEC1) & 0xf) + (ctrl_inb(RTC_SEC10) & 0x7) * 10;
min = (ctrl_inb(RTC_MIN1) & 0xf) + (ctrl_inb(RTC_MIN10) & 0xf) * 10;
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/time.h>
-
+#include <linux/bcd.h>
#include <asm/io.h>
#include <asm/rtc.h>
-#ifndef BCD_TO_BIN
-#define BCD_TO_BIN(val) ((val)=((val)&15) + ((val)>>4)*10)
-#endif
-
-#ifndef BIN_TO_BCD
-#define BIN_TO_BCD(val) ((val)=(((val)/10)<<4) + (val)%10)
-#endif
-
void sh_rtc_gettimeofday(struct timespec *ts)
{
unsigned int sec128, sec, sec2, min, hr, wk, day, mon, yr, yr100, cf_bit;
#include <linux/root_dev.h>
#include <linux/utsname.h>
#include <linux/cpu.h>
+#include <linux/pfn.h>
#include <asm/uaccess.h>
#include <asm/io.h>
#include <asm/sections.h>
sh_mv_setup(cmdline_p);
-#define PFN_UP(x) (((x) + PAGE_SIZE-1) >> PAGE_SHIFT)
-#define PFN_DOWN(x) ((x) >> PAGE_SHIFT)
-#define PFN_PHYS(x) ((x) << PAGE_SHIFT)
-
/*
* Find the highest page frame number we have available
*/
#include <linux/root_dev.h>
#include <linux/cpu.h>
#include <linux/initrd.h>
+#include <linux/pfn.h>
#include <asm/processor.h>
#include <asm/page.h>
#include <asm/pgtable.h>
#include <linux/profile.h>
#include <linux/smp.h>
#include <linux/module.h>
+#include <linux/bcd.h>
#include <asm/registers.h> /* required by inline __asm__ stmt. */
#define RCR1 rtc_base+0x38
#define RCR2 rtc_base+0x3c
-#ifndef BCD_TO_BIN
-#define BCD_TO_BIN(val) ((val)=((val)&15) + ((val)>>4)*10)
-#endif
-
-#ifndef BIN_TO_BCD
-#define BIN_TO_BCD(val) ((val)=(((val)/10)<<4) + (val)%10)
-#endif
-
#define TICK_SIZE (tick_nsec / 1000)
extern unsigned long wall_jiffies;
mon = MSTK_REG_MONTH(mregs);
year = MSTK_CVT_YEAR( MSTK_REG_YEAR(mregs) );
} else {
- int i;
-
/* Dallas 12887 RTC chip. */
- /* Stolen from arch/i386/kernel/time.c, see there for
- * credits and descriptive comments.
- */
- for (i = 0; i < 1000000; i++) {
- if (CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP)
- break;
- udelay(10);
- }
- for (i = 0; i < 1000000; i++) {
- if (!(CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP))
- break;
- udelay(10);
- }
do {
sec = CMOS_READ(RTC_SECONDS);
min = CMOS_READ(RTC_MINUTES);
mon = CMOS_READ(RTC_MONTH);
year = CMOS_READ(RTC_YEAR);
} while (sec != CMOS_READ(RTC_SECONDS));
+
if (!(CMOS_READ(RTC_CONTROL) & RTC_DM_BINARY) || RTC_ALWAYS_BCD) {
BCD_TO_BIN(sec);
BCD_TO_BIN(min);
#include <linux/kmod.h>
#endif
-struct notifier_block *sparc64die_chain;
-static DEFINE_SPINLOCK(die_notifier_lock);
+ATOMIC_NOTIFIER_HEAD(sparc64die_chain);
int register_die_notifier(struct notifier_block *nb)
{
- int err = 0;
- unsigned long flags;
- spin_lock_irqsave(&die_notifier_lock, flags);
- err = notifier_chain_register(&sparc64die_chain, nb);
- spin_unlock_irqrestore(&die_notifier_lock, flags);
- return err;
+ return atomic_notifier_chain_register(&sparc64die_chain, nb);
}
+EXPORT_SYMBOL(register_die_notifier);
+
+int unregister_die_notifier(struct notifier_block *nb)
+{
+ return atomic_notifier_chain_unregister(&sparc64die_chain, nb);
+}
+EXPORT_SYMBOL(unregister_die_notifier);
/* When an irrecoverable trap occurs at tl > 0, the trap entry
* code logs the trap state registers at every level in the trap
#ifdef CONFIG_HUGETLB_PAGE
mm_rss -= (mm->context.huge_pte_count * (HPAGE_SIZE / PAGE_SIZE));
#endif
- if (unlikely(mm_rss >=
+ if (unlikely(mm_rss >
mm->context.tsb_block[MM_TSB_BASE].tsb_rss_limit))
tsb_grow(mm, MM_TSB_BASE, mm_rss);
#ifdef CONFIG_HUGETLB_PAGE
mm_rss = mm->context.huge_pte_count;
- if (unlikely(mm_rss >=
+ if (unlikely(mm_rss >
mm->context.tsb_block[MM_TSB_HUGE].tsb_rss_limit))
tsb_grow(mm, MM_TSB_HUGE, mm_rss);
#endif
static int add_notifier(void)
{
- notifier_chain_register(&panic_notifier_list, &panic_exit_notifier);
+ atomic_notifier_chain_register(&panic_notifier_list,
+ &panic_exit_notifier);
return(0);
}
-/*
+/*
* Copyright (C) 2000 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
int error;
};
-extern int open_ubd_file(char *file, struct openflags *openflags,
+extern int open_ubd_file(char *file, struct openflags *openflags, int shared,
char **backing_file_out, int *bitmap_offset_out,
unsigned long *bitmap_len_out, int *data_offset_out,
int *create_cow_out);
static struct gendisk *ubd_gendisk[MAX_DEV];
static struct gendisk *fake_gendisk[MAX_DEV];
-
+
#ifdef CONFIG_BLK_DEV_UBD_SYNC
#define OPEN_FLAGS ((struct openflags) { .r = 1, .w = 1, .s = 1, .c = 0, \
.cl = 1 })
__u64 size;
struct openflags boot_openflags;
struct openflags openflags;
+ int shared;
int no_cow;
struct cow cow;
struct platform_device pdev;
.boot_openflags = OPEN_FLAGS, \
.openflags = OPEN_FLAGS, \
.no_cow = 0, \
+ .shared = 0, \
.cow = DEFAULT_COW, \
}
}
major = simple_strtoul(str, &end, 0);
if((*end != '\0') || (end == str)){
- printk(KERN_ERR
+ printk(KERN_ERR
"ubd_setup : didn't parse major number\n");
return(1);
}
printk(KERN_ERR "Can't assign a fake major twice\n");
goto out1;
}
-
+
fake_major = major;
printk(KERN_INFO "Setting extra ubd major number to %d\n",
if (index_out)
*index_out = n;
- for (i = 0; i < 4; i++) {
+ for (i = 0; i < sizeof("rscd="); i++) {
switch (*str) {
case 'r':
flags.w = 0;
case 'd':
dev->no_cow = 1;
break;
+ case 'c':
+ dev->shared = 1;
+ break;
case '=':
str++;
goto break_loop;
default:
- printk(KERN_ERR "ubd_setup : Expected '=' or flag letter (r,s or d)\n");
+ printk(KERN_ERR "ubd_setup : Expected '=' or flag letter (r, s, c, or d)\n");
goto out;
}
str++;
spin_unlock(&ubd_io_lock);
return;
}
-
+
ubd_finish(rq, req.error);
reactivate_fd(thread_fd, UBD_IRQ);
do_ubd_request(ubd_queue);
void kill_io_thread(void)
{
- if(io_pid != -1)
+ if(io_pid != -1)
os_kill_process(io_pid, 1);
}
create_cow = 0;
create_ptr = (dev->cow.file != NULL) ? &create_cow : NULL;
back_ptr = dev->no_cow ? NULL : &dev->cow.file;
- dev->fd = open_ubd_file(dev->file, &dev->openflags, back_ptr,
- &dev->cow.bitmap_offset, &dev->cow.bitmap_len,
- &dev->cow.data_offset, create_ptr);
+ dev->fd = open_ubd_file(dev->file, &dev->openflags, dev->shared,
+ back_ptr, &dev->cow.bitmap_offset,
+ &dev->cow.bitmap_len, &dev->cow.data_offset,
+ create_ptr);
if((dev->fd == -ENOENT) && create_cow){
- dev->fd = create_cow_file(dev->file, dev->cow.file,
+ dev->fd = create_cow_file(dev->file, dev->cow.file,
dev->openflags, 1 << 9, PAGE_SIZE,
- &dev->cow.bitmap_offset,
+ &dev->cow.bitmap_offset,
&dev->cow.bitmap_len,
&dev->cow.data_offset);
if(dev->fd >= 0){
}
flush_tlb_kernel_vm();
- err = read_cow_bitmap(dev->fd, dev->cow.bitmap,
- dev->cow.bitmap_offset,
+ err = read_cow_bitmap(dev->fd, dev->cow.bitmap,
+ dev->cow.bitmap_offset,
dev->cow.bitmap_len);
if(err < 0)
goto error;
flags = dev->openflags;
flags.w = 0;
- err = open_ubd_file(dev->cow.file, &flags, NULL, NULL, NULL,
- NULL, NULL);
+ err = open_ubd_file(dev->cow.file, &flags, dev->shared, NULL,
+ NULL, NULL, NULL, NULL);
if(err < 0) goto error;
dev->cow.fd = err;
}
dev->size = ROUND_BLOCK(dev->size);
err = ubd_new_disk(MAJOR_NR, dev->size, n, &ubd_gendisk[n]);
- if(err)
+ if(err)
goto out_close;
-
+
if(fake_major != MAJOR_NR)
- ubd_new_disk(fake_major, dev->size, n,
+ ubd_new_disk(fake_major, dev->size, n,
&fake_gendisk[n]);
/* perhaps this should also be under the "if (fake_major)" above */
return -1;
}
platform_driver_register(&ubd_driver);
- for (i = 0; i < MAX_DEV; i++)
+ for (i = 0; i < MAX_DEV; i++)
ubd_add(i);
return 0;
}
* enough. So use anyway the io thread. */
}
stack = alloc_stack(0, 0);
- io_pid = start_io_thread(stack + PAGE_SIZE - sizeof(void *),
+ io_pid = start_io_thread(stack + PAGE_SIZE - sizeof(void *),
&thread_fd);
if(io_pid < 0){
- printk(KERN_ERR
+ printk(KERN_ERR
"ubd : Failed to start I/O thread (errno = %d) - "
"falling back to synchronous I/O\n", -io_pid);
io_pid = -1;
return(0);
}
- err = um_request_irq(UBD_IRQ, thread_fd, IRQ_READ, ubd_intr,
+ err = um_request_irq(UBD_IRQ, thread_fd, IRQ_READ, ubd_intr,
SA_INTERRUPT, "ubd", ubd_dev);
if(err != 0)
printk(KERN_ERR "um_request_irq failed - errno = %d\n", -err);
if(req->op == UBD_READ) {
for(i = 0; i < req->length >> 9; i++){
if(ubd_test_bit(sector + i, (unsigned char *) bitmap))
- ubd_set_bit(i, (unsigned char *)
+ ubd_set_bit(i, (unsigned char *)
&req->sector_mask);
}
}
/* This should be impossible now */
if((rq_data_dir(req) == WRITE) && !dev->openflags.w){
- printk("Write attempted on readonly ubd device %s\n",
+ printk("Write attempted on readonly ubd device %s\n",
disk->disk_name);
end_request(req, 0);
return(1);
return(0);
}
-int open_ubd_file(char *file, struct openflags *openflags,
+int open_ubd_file(char *file, struct openflags *openflags, int shared,
char **backing_file_out, int *bitmap_offset_out,
unsigned long *bitmap_len_out, int *data_offset_out,
int *create_cow_out)
return fd;
}
- err = os_lock_file(fd, openflags->w);
- if(err < 0){
- printk("Failed to lock '%s', err = %d\n", file, -err);
- goto out_close;
+ if(shared)
+ printk("Not locking \"%s\" on the host\n", file);
+ else {
+ err = os_lock_file(fd, openflags->w);
+ if(err < 0){
+ printk("Failed to lock '%s', err = %d\n", file, -err);
+ goto out_close;
+ }
}
/* Succesful return case! */
int err, fd;
flags.c = 1;
- fd = open_ubd_file(cow_file, &flags, NULL, NULL, NULL, NULL, NULL);
+ fd = open_ubd_file(cow_file, &flags, 0, NULL, NULL, NULL, NULL, NULL);
if(fd < 0){
err = fd;
printk("Open of COW file '%s' failed, errno = %d\n", cow_file,
-/*
+/*
* Copyright (C) 2001, 2002 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
#ifndef __IRQ_USER_H__
#define __IRQ_USER_H__
+struct irq_fd {
+ struct irq_fd *next;
+ void *id;
+ int fd;
+ int type;
+ int irq;
+ int pid;
+ int events;
+ int current_events;
+};
+
enum { IRQ_READ, IRQ_WRITE };
extern void sigio_handler(int sig, union uml_pt_regs *regs);
extern void deactivate_fd(int fd, int irqnum);
extern int deactivate_all_fds(void);
extern void forward_interrupts(int pid);
-extern void init_irq_signals(int on_sigstack);
-extern void forward_ipi(int fd, int pid);
extern int activate_ipi(int fd, int pid);
extern unsigned long irq_lock(void);
extern void irq_unlock(unsigned long flags);
extern int getgid(void);
extern int pause(void);
extern int write(int, const void *, int);
-extern int exit(int);
+extern void exit(int);
extern int close(int);
extern int read(unsigned int, char *, int);
extern int pipe(int *);
--- /dev/null
+#ifndef __MISC_CONSTANT_H_
+#define __MISC_CONSTANT_H_
+
+#include <user_constants.h>
+
+#endif
#include "sysdep/ptrace.h"
#include "kern_util.h"
#include "skas/mm_id.h"
+#include "irq_user.h"
#define OS_TYPE_FILE 1
#define OS_TYPE_DIR 2
return(flags);
}
+/* file.c */
extern int os_stat_file(const char *file_name, struct uml_stat *buf);
extern int os_stat_fd(const int fd, struct uml_stat *buf);
extern int os_access(const char *file, int mode);
extern int os_file_type(char *file);
extern int os_file_mode(char *file, struct openflags *mode_out);
extern int os_lock_file(int fd, int excl);
+extern void os_flush_stdout(void);
+extern int os_stat_filesystem(char *path, long *bsize_out,
+ long long *blocks_out, long long *bfree_out,
+ long long *bavail_out, long long *files_out,
+ long long *ffree_out, void *fsid_out,
+ int fsid_size, long *namelen_out,
+ long *spare_out);
+extern int os_change_dir(char *dir);
+extern int os_fchange_dir(int fd);
/* start_up.c */
extern void os_early_checks(void);
extern int can_do_skas(void);
+extern void os_check_bugs(void);
/* Make sure they are clear when running in TT mode. Required by
* SEGV_MAYBE_FIXABLE */
/* tt.c
* for tt mode only (will be deleted in future...)
*/
+extern void forward_ipi(int fd, int pid);
+extern void kill_child_dead(int pid);
extern void stop(void);
extern int wait_for_stop(int pid, int sig, int cont_type, void *relay);
extern int protect_memory(unsigned long addr, unsigned long len,
extern void halt_skas(void);
extern void reboot_skas(void);
+/* irq.c */
+extern int os_waiting_for_events(struct irq_fd *active_fds);
+extern int os_isatty(int fd);
+extern int os_create_pollfd(int fd, int events, void *tmp_pfd, int size_tmpfds);
+extern void os_free_irq_by_cb(int (*test)(struct irq_fd *, void *), void *arg,
+ struct irq_fd *active_fds, struct irq_fd ***last_irq_ptr2);
+extern void os_free_irq_later(struct irq_fd *active_fds,
+ int irq, void *dev_id);
+extern int os_get_pollfd(int i);
+extern void os_set_pollfd(int i, int fd);
+extern void os_set_ioignore(void);
+extern void init_irq_signals(int on_sigstack);
+
+/* sigio.c */
+extern void write_sigio_workaround(void);
+extern int add_sigio_fd(int fd, int read);
+extern int ignore_sigio_fd(int fd);
+
+/* skas/trap */
+extern void sig_handler_common_skas(int sig, void *sc_ptr);
+extern void user_signal(int sig, union uml_pt_regs *regs, int pid);
+
#endif
extern int write_sigio_irq(int fd);
extern int register_sigio_fd(int fd);
-extern int read_sigio_fd(int fd);
-extern int add_sigio_fd(int fd, int read);
-extern int ignore_sigio_fd(int fd);
extern void sigio_lock(void);
extern void sigio_unlock(void);
extern unsigned long exec_fpx_regs[];
extern int have_fpx_regs;
-extern void sig_handler_common_skas(int sig, void *sc_ptr);
extern void kill_off_processes_skas(void);
#endif
extern void new_thread_proc(void *stack, void (*handler)(int sig));
extern void new_thread_handler(int sig);
extern void handle_syscall(union uml_pt_regs *regs);
-extern void user_signal(int sig, union uml_pt_regs *regs, int pid);
extern int new_mm(unsigned long stack);
extern void get_skas_faultinfo(int pid, struct faultinfo * fi);
extern long execute_syscall_skas(void *r);
extern void kill_child_dead(int pid);
extern int cont(int pid);
extern void check_sigio(void);
-extern void write_sigio_workaround(void);
extern void arch_check_bugs(void);
extern int cpu_feature(char *what, char *buf, int len);
extern int arch_handle_signal(int sig, union uml_pt_regs *regs);
clean-files :=
obj-y = config.o exec_kern.o exitcode.o \
- init_task.o irq.o irq_user.o ksyms.o mem.o physmem.o \
- process_kern.o ptrace.o reboot.o resource.o sigio_user.o sigio_kern.o \
+ init_task.o irq.o ksyms.o mem.o physmem.o \
+ process_kern.o ptrace.o reboot.o resource.o sigio_kern.o \
signal_kern.o smp.o syscall_kern.o sysrq.o \
time_kern.o tlb.o trap_kern.o uaccess.o um_arch.o umid.o
obj-$(CONFIG_BLK_DEV_INITRD) += initrd.o
obj-$(CONFIG_GPROF) += gprof_syms.o
obj-$(CONFIG_GCOV) += gmon_syms.o
-obj-$(CONFIG_TTY_LOG) += tty_log.o
obj-$(CONFIG_SYSCALL_DEBUG) += syscall.o
obj-$(CONFIG_MODE_TT) += tt/
obj-$(CONFIG_MODE_SKAS) += skas/
-user-objs-$(CONFIG_TTY_LOG) += tty_log.o
-
-USER_OBJS := $(user-objs-y) config.o tty_log.o
+USER_OBJS := config.o
include arch/um/scripts/Makefile.rules
CHOOSE_MODE_PROC(start_thread_tt, start_thread_skas, regs, eip, esp);
}
-extern void log_exec(char **argv, void *tty);
-
static long execve1(char *file, char __user * __user *argv,
char __user *__user *env)
{
#include "irq_user.h"
#include "irq_kern.h"
#include "os.h"
+#include "sigio.h"
+#include "misc_constants.h"
/*
* Generic, controller-independent functions:
return 0;
}
+struct irq_fd *active_fds = NULL;
+static struct irq_fd **last_irq_ptr = &active_fds;
+
+extern void free_irqs(void);
+
+void sigio_handler(int sig, union uml_pt_regs *regs)
+{
+ struct irq_fd *irq_fd;
+ int n;
+
+ if(smp_sigio_handler()) return;
+ while(1){
+ n = os_waiting_for_events(active_fds);
+ if (n <= 0) {
+ if(n == -EINTR) continue;
+ else break;
+ }
+
+ for(irq_fd = active_fds; irq_fd != NULL; irq_fd = irq_fd->next){
+ if(irq_fd->current_events != 0){
+ irq_fd->current_events = 0;
+ do_IRQ(irq_fd->irq, regs);
+ }
+ }
+ }
+
+ free_irqs();
+}
+
+static void maybe_sigio_broken(int fd, int type)
+{
+ if(os_isatty(fd)){
+ if((type == IRQ_WRITE) && !pty_output_sigio){
+ write_sigio_workaround();
+ add_sigio_fd(fd, 0);
+ }
+ else if((type == IRQ_READ) && !pty_close_sigio){
+ write_sigio_workaround();
+ add_sigio_fd(fd, 1);
+ }
+ }
+}
+
+
+int activate_fd(int irq, int fd, int type, void *dev_id)
+{
+ struct pollfd *tmp_pfd;
+ struct irq_fd *new_fd, *irq_fd;
+ unsigned long flags;
+ int pid, events, err, n;
+
+ pid = os_getpid();
+ err = os_set_fd_async(fd, pid);
+ if(err < 0)
+ goto out;
+
+ new_fd = um_kmalloc(sizeof(*new_fd));
+ err = -ENOMEM;
+ if(new_fd == NULL)
+ goto out;
+
+ if(type == IRQ_READ) events = UM_POLLIN | UM_POLLPRI;
+ else events = UM_POLLOUT;
+ *new_fd = ((struct irq_fd) { .next = NULL,
+ .id = dev_id,
+ .fd = fd,
+ .type = type,
+ .irq = irq,
+ .pid = pid,
+ .events = events,
+ .current_events = 0 } );
+
+ /* Critical section - locked by a spinlock because this stuff can
+ * be changed from interrupt handlers. The stuff above is done
+ * outside the lock because it allocates memory.
+ */
+
+ /* Actually, it only looks like it can be called from interrupt
+ * context. The culprit is reactivate_fd, which calls
+ * maybe_sigio_broken, which calls write_sigio_workaround,
+ * which calls activate_fd. However, write_sigio_workaround should
+ * only be called once, at boot time. That would make it clear that
+ * this is called only from process context, and can be locked with
+ * a semaphore.
+ */
+ flags = irq_lock();
+ for(irq_fd = active_fds; irq_fd != NULL; irq_fd = irq_fd->next){
+ if((irq_fd->fd == fd) && (irq_fd->type == type)){
+ printk("Registering fd %d twice\n", fd);
+ printk("Irqs : %d, %d\n", irq_fd->irq, irq);
+ printk("Ids : 0x%p, 0x%p\n", irq_fd->id, dev_id);
+ goto out_unlock;
+ }
+ }
+
+ /*-------------*/
+ if(type == IRQ_WRITE)
+ fd = -1;
+
+ tmp_pfd = NULL;
+ n = 0;
+
+ while(1){
+ n = os_create_pollfd(fd, events, tmp_pfd, n);
+ if (n == 0)
+ break;
+
+ /* n > 0
+ * It means we couldn't put new pollfd to current pollfds
+ * and tmp_fds is NULL or too small for new pollfds array.
+ * Needed size is equal to n as minimum.
+ *
+ * Here we have to drop the lock in order to call
+ * kmalloc, which might sleep.
+ * If something else came in and changed the pollfds array
+ * so we will not be able to put new pollfd struct to pollfds
+ * then we free the buffer tmp_fds and try again.
+ */
+ irq_unlock(flags);
+ if (tmp_pfd != NULL) {
+ kfree(tmp_pfd);
+ tmp_pfd = NULL;
+ }
+
+ tmp_pfd = um_kmalloc(n);
+ if (tmp_pfd == NULL)
+ goto out_kfree;
+
+ flags = irq_lock();
+ }
+ /*-------------*/
+
+ *last_irq_ptr = new_fd;
+ last_irq_ptr = &new_fd->next;
+
+ irq_unlock(flags);
+
+ /* This calls activate_fd, so it has to be outside the critical
+ * section.
+ */
+ maybe_sigio_broken(fd, type);
+
+ return(0);
+
+ out_unlock:
+ irq_unlock(flags);
+ out_kfree:
+ kfree(new_fd);
+ out:
+ return(err);
+}
+
+static void free_irq_by_cb(int (*test)(struct irq_fd *, void *), void *arg)
+{
+ unsigned long flags;
+
+ flags = irq_lock();
+ os_free_irq_by_cb(test, arg, active_fds, &last_irq_ptr);
+ irq_unlock(flags);
+}
+
+struct irq_and_dev {
+ int irq;
+ void *dev;
+};
+
+static int same_irq_and_dev(struct irq_fd *irq, void *d)
+{
+ struct irq_and_dev *data = d;
+
+ return((irq->irq == data->irq) && (irq->id == data->dev));
+}
+
+void free_irq_by_irq_and_dev(unsigned int irq, void *dev)
+{
+ struct irq_and_dev data = ((struct irq_and_dev) { .irq = irq,
+ .dev = dev });
+
+ free_irq_by_cb(same_irq_and_dev, &data);
+}
+
+static int same_fd(struct irq_fd *irq, void *fd)
+{
+ return(irq->fd == *((int *) fd));
+}
+
+void free_irq_by_fd(int fd)
+{
+ free_irq_by_cb(same_fd, &fd);
+}
+
+static struct irq_fd *find_irq_by_fd(int fd, int irqnum, int *index_out)
+{
+ struct irq_fd *irq;
+ int i = 0;
+ int fdi;
+
+ for(irq=active_fds; irq != NULL; irq = irq->next){
+ if((irq->fd == fd) && (irq->irq == irqnum)) break;
+ i++;
+ }
+ if(irq == NULL){
+ printk("find_irq_by_fd doesn't have descriptor %d\n", fd);
+ goto out;
+ }
+ fdi = os_get_pollfd(i);
+ if((fdi != -1) && (fdi != fd)){
+ printk("find_irq_by_fd - mismatch between active_fds and "
+ "pollfds, fd %d vs %d, need %d\n", irq->fd,
+ fdi, fd);
+ irq = NULL;
+ goto out;
+ }
+ *index_out = i;
+ out:
+ return(irq);
+}
+
+void reactivate_fd(int fd, int irqnum)
+{
+ struct irq_fd *irq;
+ unsigned long flags;
+ int i;
+
+ flags = irq_lock();
+ irq = find_irq_by_fd(fd, irqnum, &i);
+ if(irq == NULL){
+ irq_unlock(flags);
+ return;
+ }
+ os_set_pollfd(i, irq->fd);
+ irq_unlock(flags);
+
+ /* This calls activate_fd, so it has to be outside the critical
+ * section.
+ */
+ maybe_sigio_broken(fd, irq->type);
+}
+
+void deactivate_fd(int fd, int irqnum)
+{
+ struct irq_fd *irq;
+ unsigned long flags;
+ int i;
+
+ flags = irq_lock();
+ irq = find_irq_by_fd(fd, irqnum, &i);
+ if(irq == NULL)
+ goto out;
+ os_set_pollfd(i, -1);
+ out:
+ irq_unlock(flags);
+}
+
+int deactivate_all_fds(void)
+{
+ struct irq_fd *irq;
+ int err;
+
+ for(irq=active_fds;irq != NULL;irq = irq->next){
+ err = os_clear_fd_async(irq->fd);
+ if(err)
+ return(err);
+ }
+ /* If there is a signal already queued, after unblocking ignore it */
+ os_set_ioignore();
+
+ return(0);
+}
+
+void forward_interrupts(int pid)
+{
+ struct irq_fd *irq;
+ unsigned long flags;
+ int err;
+
+ flags = irq_lock();
+ for(irq=active_fds;irq != NULL;irq = irq->next){
+ err = os_set_owner(irq->fd, pid);
+ if(err < 0){
+ /* XXX Just remove the irq rather than
+ * print out an infinite stream of these
+ */
+ printk("Failed to forward %d to pid %d, err = %d\n",
+ irq->fd, pid, -err);
+ }
+
+ irq->pid = pid;
+ }
+ irq_unlock(flags);
+}
+
/*
* do_IRQ handles all normal device IRQ's (the special
* SMP cross-CPU interrupts have their own specific
+++ /dev/null
-/*
- * Copyright (C) 2000 Jeff Dike (jdike@karaya.com)
- * Licensed under the GPL
- */
-
-#include <stdlib.h>
-#include <unistd.h>
-#include <errno.h>
-#include <signal.h>
-#include <string.h>
-#include <sys/poll.h>
-#include <sys/types.h>
-#include <sys/time.h>
-#include "user_util.h"
-#include "kern_util.h"
-#include "user.h"
-#include "process.h"
-#include "sigio.h"
-#include "irq_user.h"
-#include "os.h"
-
-struct irq_fd {
- struct irq_fd *next;
- void *id;
- int fd;
- int type;
- int irq;
- int pid;
- int events;
- int current_events;
-};
-
-static struct irq_fd *active_fds = NULL;
-static struct irq_fd **last_irq_ptr = &active_fds;
-
-static struct pollfd *pollfds = NULL;
-static int pollfds_num = 0;
-static int pollfds_size = 0;
-
-extern int io_count, intr_count;
-
-extern void free_irqs(void);
-
-void sigio_handler(int sig, union uml_pt_regs *regs)
-{
- struct irq_fd *irq_fd;
- int i, n;
-
- if(smp_sigio_handler()) return;
- while(1){
- n = poll(pollfds, pollfds_num, 0);
- if(n < 0){
- if(errno == EINTR) continue;
- printk("sigio_handler : poll returned %d, "
- "errno = %d\n", n, errno);
- break;
- }
- if(n == 0) break;
-
- irq_fd = active_fds;
- for(i = 0; i < pollfds_num; i++){
- if(pollfds[i].revents != 0){
- irq_fd->current_events = pollfds[i].revents;
- pollfds[i].fd = -1;
- }
- irq_fd = irq_fd->next;
- }
-
- for(irq_fd = active_fds; irq_fd != NULL; irq_fd = irq_fd->next){
- if(irq_fd->current_events != 0){
- irq_fd->current_events = 0;
- do_IRQ(irq_fd->irq, regs);
- }
- }
- }
-
- free_irqs();
-}
-
-int activate_ipi(int fd, int pid)
-{
- return(os_set_fd_async(fd, pid));
-}
-
-static void maybe_sigio_broken(int fd, int type)
-{
- if(isatty(fd)){
- if((type == IRQ_WRITE) && !pty_output_sigio){
- write_sigio_workaround();
- add_sigio_fd(fd, 0);
- }
- else if((type == IRQ_READ) && !pty_close_sigio){
- write_sigio_workaround();
- add_sigio_fd(fd, 1);
- }
- }
-}
-
-int activate_fd(int irq, int fd, int type, void *dev_id)
-{
- struct pollfd *tmp_pfd;
- struct irq_fd *new_fd, *irq_fd;
- unsigned long flags;
- int pid, events, err, n, size;
-
- pid = os_getpid();
- err = os_set_fd_async(fd, pid);
- if(err < 0)
- goto out;
-
- new_fd = um_kmalloc(sizeof(*new_fd));
- err = -ENOMEM;
- if(new_fd == NULL)
- goto out;
-
- if(type == IRQ_READ) events = POLLIN | POLLPRI;
- else events = POLLOUT;
- *new_fd = ((struct irq_fd) { .next = NULL,
- .id = dev_id,
- .fd = fd,
- .type = type,
- .irq = irq,
- .pid = pid,
- .events = events,
- .current_events = 0 } );
-
- /* Critical section - locked by a spinlock because this stuff can
- * be changed from interrupt handlers. The stuff above is done
- * outside the lock because it allocates memory.
- */
-
- /* Actually, it only looks like it can be called from interrupt
- * context. The culprit is reactivate_fd, which calls
- * maybe_sigio_broken, which calls write_sigio_workaround,
- * which calls activate_fd. However, write_sigio_workaround should
- * only be called once, at boot time. That would make it clear that
- * this is called only from process context, and can be locked with
- * a semaphore.
- */
- flags = irq_lock();
- for(irq_fd = active_fds; irq_fd != NULL; irq_fd = irq_fd->next){
- if((irq_fd->fd == fd) && (irq_fd->type == type)){
- printk("Registering fd %d twice\n", fd);
- printk("Irqs : %d, %d\n", irq_fd->irq, irq);
- printk("Ids : 0x%x, 0x%x\n", irq_fd->id, dev_id);
- goto out_unlock;
- }
- }
-
- n = pollfds_num;
- if(n == pollfds_size){
- while(1){
- /* Here we have to drop the lock in order to call
- * kmalloc, which might sleep. If something else
- * came in and changed the pollfds array, we free
- * the buffer and try again.
- */
- irq_unlock(flags);
- size = (pollfds_num + 1) * sizeof(pollfds[0]);
- tmp_pfd = um_kmalloc(size);
- flags = irq_lock();
- if(tmp_pfd == NULL)
- goto out_unlock;
- if(n == pollfds_size)
- break;
- kfree(tmp_pfd);
- }
- if(pollfds != NULL){
- memcpy(tmp_pfd, pollfds,
- sizeof(pollfds[0]) * pollfds_size);
- kfree(pollfds);
- }
- pollfds = tmp_pfd;
- pollfds_size++;
- }
-
- if(type == IRQ_WRITE)
- fd = -1;
-
- pollfds[pollfds_num] = ((struct pollfd) { .fd = fd,
- .events = events,
- .revents = 0 });
- pollfds_num++;
-
- *last_irq_ptr = new_fd;
- last_irq_ptr = &new_fd->next;
-
- irq_unlock(flags);
-
- /* This calls activate_fd, so it has to be outside the critical
- * section.
- */
- maybe_sigio_broken(fd, type);
-
- return(0);
-
- out_unlock:
- irq_unlock(flags);
- kfree(new_fd);
- out:
- return(err);
-}
-
-static void free_irq_by_cb(int (*test)(struct irq_fd *, void *), void *arg)
-{
- struct irq_fd **prev;
- unsigned long flags;
- int i = 0;
-
- flags = irq_lock();
- prev = &active_fds;
- while(*prev != NULL){
- if((*test)(*prev, arg)){
- struct irq_fd *old_fd = *prev;
- if((pollfds[i].fd != -1) &&
- (pollfds[i].fd != (*prev)->fd)){
- printk("free_irq_by_cb - mismatch between "
- "active_fds and pollfds, fd %d vs %d\n",
- (*prev)->fd, pollfds[i].fd);
- goto out;
- }
-
- pollfds_num--;
-
- /* This moves the *whole* array after pollfds[i] (though
- * it doesn't spot as such)! */
-
- memmove(&pollfds[i], &pollfds[i + 1],
- (pollfds_num - i) * sizeof(pollfds[0]));
-
- if(last_irq_ptr == &old_fd->next)
- last_irq_ptr = prev;
- *prev = (*prev)->next;
- if(old_fd->type == IRQ_WRITE)
- ignore_sigio_fd(old_fd->fd);
- kfree(old_fd);
- continue;
- }
- prev = &(*prev)->next;
- i++;
- }
- out:
- irq_unlock(flags);
-}
-
-struct irq_and_dev {
- int irq;
- void *dev;
-};
-
-static int same_irq_and_dev(struct irq_fd *irq, void *d)
-{
- struct irq_and_dev *data = d;
-
- return((irq->irq == data->irq) && (irq->id == data->dev));
-}
-
-void free_irq_by_irq_and_dev(unsigned int irq, void *dev)
-{
- struct irq_and_dev data = ((struct irq_and_dev) { .irq = irq,
- .dev = dev });
-
- free_irq_by_cb(same_irq_and_dev, &data);
-}
-
-static int same_fd(struct irq_fd *irq, void *fd)
-{
- return(irq->fd == *((int *) fd));
-}
-
-void free_irq_by_fd(int fd)
-{
- free_irq_by_cb(same_fd, &fd);
-}
-
-static struct irq_fd *find_irq_by_fd(int fd, int irqnum, int *index_out)
-{
- struct irq_fd *irq;
- int i = 0;
-
- for(irq=active_fds; irq != NULL; irq = irq->next){
- if((irq->fd == fd) && (irq->irq == irqnum)) break;
- i++;
- }
- if(irq == NULL){
- printk("find_irq_by_fd doesn't have descriptor %d\n", fd);
- goto out;
- }
- if((pollfds[i].fd != -1) && (pollfds[i].fd != fd)){
- printk("find_irq_by_fd - mismatch between active_fds and "
- "pollfds, fd %d vs %d, need %d\n", irq->fd,
- pollfds[i].fd, fd);
- irq = NULL;
- goto out;
- }
- *index_out = i;
- out:
- return(irq);
-}
-
-void reactivate_fd(int fd, int irqnum)
-{
- struct irq_fd *irq;
- unsigned long flags;
- int i;
-
- flags = irq_lock();
- irq = find_irq_by_fd(fd, irqnum, &i);
- if(irq == NULL){
- irq_unlock(flags);
- return;
- }
-
- pollfds[i].fd = irq->fd;
-
- irq_unlock(flags);
-
- /* This calls activate_fd, so it has to be outside the critical
- * section.
- */
- maybe_sigio_broken(fd, irq->type);
-}
-
-void deactivate_fd(int fd, int irqnum)
-{
- struct irq_fd *irq;
- unsigned long flags;
- int i;
-
- flags = irq_lock();
- irq = find_irq_by_fd(fd, irqnum, &i);
- if(irq == NULL)
- goto out;
- pollfds[i].fd = -1;
- out:
- irq_unlock(flags);
-}
-
-int deactivate_all_fds(void)
-{
- struct irq_fd *irq;
- int err;
-
- for(irq=active_fds;irq != NULL;irq = irq->next){
- err = os_clear_fd_async(irq->fd);
- if(err)
- return(err);
- }
- /* If there is a signal already queued, after unblocking ignore it */
- set_handler(SIGIO, SIG_IGN, 0, -1);
-
- return(0);
-}
-
-void forward_ipi(int fd, int pid)
-{
- int err;
-
- err = os_set_owner(fd, pid);
- if(err < 0)
- printk("forward_ipi: set_owner failed, fd = %d, me = %d, "
- "target = %d, err = %d\n", fd, os_getpid(), pid, -err);
-}
-
-void forward_interrupts(int pid)
-{
- struct irq_fd *irq;
- unsigned long flags;
- int err;
-
- flags = irq_lock();
- for(irq=active_fds;irq != NULL;irq = irq->next){
- err = os_set_owner(irq->fd, pid);
- if(err < 0){
- /* XXX Just remove the irq rather than
- * print out an infinite stream of these
- */
- printk("Failed to forward %d to pid %d, err = %d\n",
- irq->fd, pid, -err);
- }
-
- irq->pid = pid;
- }
- irq_unlock(flags);
-}
-
-void init_irq_signals(int on_sigstack)
-{
- __sighandler_t h;
- int flags;
-
- flags = on_sigstack ? SA_ONSTACK : 0;
- if(timer_irq_inited) h = (__sighandler_t) alarm_handler;
- else h = boot_timer_handler;
-
- set_handler(SIGVTALRM, h, flags | SA_RESTART,
- SIGUSR1, SIGIO, SIGWINCH, SIGALRM, -1);
- set_handler(SIGIO, (__sighandler_t) sig_handler, flags | SA_RESTART,
- SIGUSR1, SIGIO, SIGWINCH, SIGALRM, SIGVTALRM, -1);
- signal(SIGWINCH, SIG_IGN);
-}
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only. This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
#include "linux/vmalloc.h"
#include "linux/bootmem.h"
#include "linux/module.h"
+#include "linux/pfn.h"
#include "asm/types.h"
#include "asm/pgtable.h"
#include "kern_util.h"
}
}
-#define PFN_UP(x) (((x) + PAGE_SIZE-1) >> PAGE_SHIFT)
-
extern int __syscall_stub_start, __binary_start;
void setup_physmem(unsigned long start, unsigned long reserve_end,
-/*
+/*
* Copyright (C) 2002 - 2003 Jeff Dike (jdike@addtoit.com)
* Licensed under the GPL
*/
#include "sigio.h"
#include "irq_user.h"
#include "irq_kern.h"
+#include "os.h"
/* Protected by sigio_lock() called from write_sigio_workaround */
static int sigio_irq_fd = -1;
static irqreturn_t sigio_interrupt(int irq, void *data, struct pt_regs *unused)
{
- read_sigio_fd(sigio_irq_fd);
+ char c;
+
+ os_read_file(sigio_irq_fd, &c, sizeof(c));
reactivate_fd(sigio_irq_fd, SIGIO_WRITE_IRQ);
return(IRQ_HANDLED);
}
spin_unlock(&sigio_spinlock);
}
+extern void sigio_cleanup(void);
+__uml_exitcall(sigio_cleanup);
+
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
-/*
+/*
* Copyright (C) 2000 - 2003 Jeff Dike (jdike@addtoit.com)
* Licensed under the GPL
*/
if(err < 0)
panic("CPU#%d failed to create IPI pipe, err = %d", cpu, -err);
- activate_ipi(cpu_data[cpu].ipi_pipe[0],
+ os_set_fd_async(cpu_data[cpu].ipi_pipe[0],
current->thread.mode.tt.extern_pid);
-
+
wmb();
if (cpu_test_and_set(cpu, cpu_callin_map)) {
printk("huh, CPU#%d already present??\n", cpu);
panic("copy_process failed in idle_thread, error = %ld",
PTR_ERR(new_task));
- cpu_tasks[cpu] = ((struct cpu_task)
+ cpu_tasks[cpu] = ((struct cpu_task)
{ .pid = new_task->thread.mode.tt.extern_pid,
.task = new_task } );
idle_threads[cpu] = new_task;
if(err < 0)
panic("CPU#0 failed to create IPI pipe, errno = %d", -err);
- activate_ipi(cpu_data[me].ipi_pipe[0],
+ os_set_fd_async(cpu_data[me].ipi_pipe[0],
current->thread.mode.tt.extern_pid);
for(cpu = 1; cpu < ncpus; cpu++){
printk("Booting processor %d...\n", cpu);
-
+
idle = idle_thread(cpu);
init_idle(idle, cpu);
atomic_inc(&scf_finished);
}
-int smp_call_function(void (*_func)(void *info), void *_info, int nonatomic,
+int smp_call_function(void (*_func)(void *info), void *_info, int nonatomic,
int wait)
{
int cpus = num_online_cpus() - 1;
#ifndef CONFIG_HIGHMEM
highmem = 0;
printf("CONFIG_HIGHMEM not enabled - physical memory shrunk "
- "to %lu bytes\n", physmem_size);
+ "to %Lu bytes\n", physmem_size);
#endif
}
setup_physmem(uml_physmem, uml_reserved, physmem_size, highmem);
if(init_maps(physmem_size, iomem_size, highmem)){
- printf("Failed to allocate mem_map for %lu bytes of physical "
- "memory and %lu bytes of highmem\n", physmem_size,
+ printf("Failed to allocate mem_map for %Lu bytes of physical "
+ "memory and %Lu bytes of highmem\n", physmem_size,
highmem);
exit(1);
}
void __init setup_arch(char **cmdline_p)
{
- notifier_chain_register(&panic_notifier_list, &panic_exit_notifier);
+ atomic_notifier_chain_register(&panic_notifier_list,
+ &panic_exit_notifier);
paging_init();
strlcpy(saved_command_line, command_line, COMMAND_LINE_SIZE);
*cmdline_p = command_line;
void __init check_bugs(void)
{
arch_check_bugs();
- check_sigio();
- check_devanon();
+ os_check_bugs();
}
void apply_alternatives(struct alt_instr *start, struct alt_instr *end)
# Licensed under the GPL
#
-obj-y = aio.o elf_aux.o file.o helper.o main.o mem.o process.o signal.o \
- start_up.o time.o trap.o tt.o tty.o uaccess.o umid.o user_syms.o \
- util.o drivers/ sys-$(SUBARCH)/
+obj-y = aio.o elf_aux.o file.o helper.o irq.o main.o mem.o process.o sigio.o \
+ signal.o start_up.o time.o trap.o tt.o tty.o uaccess.o umid.o \
+ user_syms.o util.o drivers/ sys-$(SUBARCH)/
obj-$(CONFIG_MODE_SKAS) += skas/
+obj-$(CONFIG_TTY_LOG) += tty_log.o
+user-objs-$(CONFIG_TTY_LOG) += tty_log.o
-USER_OBJS := aio.o elf_aux.o file.o helper.o main.o mem.o process.o signal.o \
- start_up.o time.o trap.o tt.o tty.o uaccess.o umid.o util.o
+USER_OBJS := $(user-objs-y) aio.o elf_aux.o file.o helper.o irq.o main.o mem.o \
+ process.o sigio.o signal.o start_up.o time.o trap.o tt.o tty.o \
+ uaccess.o umid.o util.o
elf_aux.o: $(ARCH_DIR)/kernel-offsets.h
CFLAGS_elf_aux.o += -I$(objtree)/arch/um
--- /dev/null
+/*
+ * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
+ * Licensed under the GPL
+ */
+
+#include <stdlib.h>
+#include <unistd.h>
+#include <errno.h>
+#include <signal.h>
+#include <string.h>
+#include <sys/poll.h>
+#include <sys/types.h>
+#include <sys/time.h>
+#include "user_util.h"
+#include "kern_util.h"
+#include "user.h"
+#include "process.h"
+#include "sigio.h"
+#include "irq_user.h"
+#include "os.h"
+
+static struct pollfd *pollfds = NULL;
+static int pollfds_num = 0;
+static int pollfds_size = 0;
+
+int os_waiting_for_events(struct irq_fd *active_fds)
+{
+ struct irq_fd *irq_fd;
+ int i, n, err;
+
+ n = poll(pollfds, pollfds_num, 0);
+ if(n < 0){
+ err = -errno;
+ if(errno != EINTR)
+ printk("sigio_handler: os_waiting_for_events:"
+ " poll returned %d, errno = %d\n", n, errno);
+ return err;
+ }
+
+ if(n == 0)
+ return 0;
+
+ irq_fd = active_fds;
+
+ for(i = 0; i < pollfds_num; i++){
+ if(pollfds[i].revents != 0){
+ irq_fd->current_events = pollfds[i].revents;
+ pollfds[i].fd = -1;
+ }
+ irq_fd = irq_fd->next;
+ }
+ return n;
+}
+
+int os_isatty(int fd)
+{
+ return(isatty(fd));
+}
+
+int os_create_pollfd(int fd, int events, void *tmp_pfd, int size_tmpfds)
+{
+ if (pollfds_num == pollfds_size) {
+ if (size_tmpfds <= pollfds_size * sizeof(pollfds[0])) {
+ /* return min size needed for new pollfds area */
+ return((pollfds_size + 1) * sizeof(pollfds[0]));
+ }
+
+ if(pollfds != NULL){
+ memcpy(tmp_pfd, pollfds,
+ sizeof(pollfds[0]) * pollfds_size);
+ /* remove old pollfds */
+ kfree(pollfds);
+ }
+ pollfds = tmp_pfd;
+ pollfds_size++;
+ } else {
+ /* remove not used tmp_pfd */
+ if (tmp_pfd != NULL)
+ kfree(tmp_pfd);
+ }
+
+ pollfds[pollfds_num] = ((struct pollfd) { .fd = fd,
+ .events = events,
+ .revents = 0 });
+ pollfds_num++;
+
+ return(0);
+}
+
+void os_free_irq_by_cb(int (*test)(struct irq_fd *, void *), void *arg,
+ struct irq_fd *active_fds, struct irq_fd ***last_irq_ptr2)
+{
+ struct irq_fd **prev;
+ int i = 0;
+
+ prev = &active_fds;
+ while(*prev != NULL){
+ if((*test)(*prev, arg)){
+ struct irq_fd *old_fd = *prev;
+ if((pollfds[i].fd != -1) &&
+ (pollfds[i].fd != (*prev)->fd)){
+ printk("os_free_irq_by_cb - mismatch between "
+ "active_fds and pollfds, fd %d vs %d\n",
+ (*prev)->fd, pollfds[i].fd);
+ goto out;
+ }
+
+ pollfds_num--;
+
+ /* This moves the *whole* array after pollfds[i]
+ * (though it doesn't spot as such)!
+ */
+
+ memmove(&pollfds[i], &pollfds[i + 1],
+ (pollfds_num - i) * sizeof(pollfds[0]));
+ if(*last_irq_ptr2 == &old_fd->next)
+ *last_irq_ptr2 = prev;
+
+ *prev = (*prev)->next;
+ if(old_fd->type == IRQ_WRITE)
+ ignore_sigio_fd(old_fd->fd);
+ kfree(old_fd);
+ continue;
+ }
+ prev = &(*prev)->next;
+ i++;
+ }
+ out:
+ return;
+}
+
+
+int os_get_pollfd(int i)
+{
+ return(pollfds[i].fd);
+}
+
+void os_set_pollfd(int i, int fd)
+{
+ pollfds[i].fd = fd;
+}
+
+void os_set_ioignore(void)
+{
+ set_handler(SIGIO, SIG_IGN, 0, -1);
+}
+
+void init_irq_signals(int on_sigstack)
+{
+ __sighandler_t h;
+ int flags;
+
+ flags = on_sigstack ? SA_ONSTACK : 0;
+ if(timer_irq_inited) h = (__sighandler_t) alarm_handler;
+ else h = boot_timer_handler;
+
+ set_handler(SIGVTALRM, h, flags | SA_RESTART,
+ SIGUSR1, SIGIO, SIGWINCH, SIGALRM, -1);
+ set_handler(SIGIO, (__sighandler_t) sig_handler, flags | SA_RESTART,
+ SIGUSR1, SIGIO, SIGWINCH, SIGALRM, SIGVTALRM, -1);
+ signal(SIGWINCH, SIG_IGN);
+}
-/*
+/*
* Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
#include "sigio.h"
#include "os.h"
-/* Changed during early boot */
-int pty_output_sigio = 0;
-int pty_close_sigio = 0;
-
-/* Used as a flag during SIGIO testing early in boot */
-static volatile int got_sigio = 0;
-
-void __init handler(int sig)
-{
- got_sigio = 1;
-}
-
-struct openpty_arg {
- int master;
- int slave;
- int err;
-};
-
-static void openpty_cb(void *arg)
-{
- struct openpty_arg *info = arg;
-
- info->err = 0;
- if(openpty(&info->master, &info->slave, NULL, NULL, NULL))
- info->err = -errno;
-}
-
-void __init check_one_sigio(void (*proc)(int, int))
-{
- struct sigaction old, new;
- struct openpty_arg pty = { .master = -1, .slave = -1 };
- int master, slave, err;
-
- initial_thread_cb(openpty_cb, &pty);
- if(pty.err){
- printk("openpty failed, errno = %d\n", -pty.err);
- return;
- }
-
- master = pty.master;
- slave = pty.slave;
-
- if((master == -1) || (slave == -1)){
- printk("openpty failed to allocate a pty\n");
- return;
- }
-
- /* Not now, but complain so we now where we failed. */
- err = raw(master);
- if (err < 0)
- panic("check_sigio : __raw failed, errno = %d\n", -err);
-
- err = os_sigio_async(master, slave);
- if(err < 0)
- panic("tty_fds : sigio_async failed, err = %d\n", -err);
-
- if(sigaction(SIGIO, NULL, &old) < 0)
- panic("check_sigio : sigaction 1 failed, errno = %d\n", errno);
- new = old;
- new.sa_handler = handler;
- if(sigaction(SIGIO, &new, NULL) < 0)
- panic("check_sigio : sigaction 2 failed, errno = %d\n", errno);
-
- got_sigio = 0;
- (*proc)(master, slave);
-
- os_close_file(master);
- os_close_file(slave);
-
- if(sigaction(SIGIO, &old, NULL) < 0)
- panic("check_sigio : sigaction 3 failed, errno = %d\n", errno);
-}
-
-static void tty_output(int master, int slave)
-{
- int n;
- char buf[512];
-
- printk("Checking that host ptys support output SIGIO...");
-
- memset(buf, 0, sizeof(buf));
-
- while(os_write_file(master, buf, sizeof(buf)) > 0) ;
- if(errno != EAGAIN)
- panic("check_sigio : write failed, errno = %d\n", errno);
- while(((n = os_read_file(slave, buf, sizeof(buf))) > 0) && !got_sigio) ;
-
- if (got_sigio) {
- printk("Yes\n");
- pty_output_sigio = 1;
- } else if (n == -EAGAIN) {
- printk("No, enabling workaround\n");
- } else {
- panic("check_sigio : read failed, err = %d\n", n);
- }
-}
-
-static void tty_close(int master, int slave)
-{
- printk("Checking that host ptys support SIGIO on close...");
-
- os_close_file(slave);
- if(got_sigio){
- printk("Yes\n");
- pty_close_sigio = 1;
- }
- else printk("No, enabling workaround\n");
-}
-
-void __init check_sigio(void)
-{
- if((os_access("/dev/ptmx", OS_ACC_R_OK) < 0) &&
- (os_access("/dev/ptyp0", OS_ACC_R_OK) < 0)){
- printk("No pseudo-terminals available - skipping pty SIGIO "
- "check\n");
- return;
- }
- check_one_sigio(tty_output);
- check_one_sigio(tty_close);
-}
-
-/* Protected by sigio_lock(), also used by sigio_cleanup, which is an
+/* Protected by sigio_lock(), also used by sigio_cleanup, which is an
* exitcall.
*/
static int write_sigio_pid = -1;
* the descriptors closed after it is killed. So, it can't see them change.
* On the UML side, they are changed under the sigio_lock.
*/
-static int write_sigio_fds[2] = { -1, -1 };
-static int sigio_private[2] = { -1, -1 };
+#define SIGIO_FDS_INIT {-1, -1}
+
+static int write_sigio_fds[2] = SIGIO_FDS_INIT;
+static int sigio_private[2] = SIGIO_FDS_INIT;
struct pollfds {
struct pollfd *poll;
return;
fail:
/* Critical section start */
- if(write_sigio_pid != -1)
+ if(write_sigio_pid != -1)
os_kill_process(write_sigio_pid, 1);
write_sigio_pid = -1;
- os_close_file(sigio_private[0]);
- os_close_file(sigio_private[1]);
- os_close_file(write_sigio_fds[0]);
- os_close_file(write_sigio_fds[1]);
+ close(sigio_private[0]);
+ close(sigio_private[1]);
+ close(write_sigio_fds[0]);
+ close(write_sigio_fds[1]);
/* Critical section end */
set_signals(flags);
}
sigio_lock();
for(i = 0; i < current_poll.used; i++){
- if(current_poll.poll[i].fd == fd)
+ if(current_poll.poll[i].fd == fd)
goto out;
}
n = current_poll.used + 1;
err = need_poll(n);
- if(err)
+ if(err)
goto out;
for(i = 0; i < current_poll.used; i++)
}
if(i == current_poll.used)
goto out;
-
+
err = need_poll(current_poll.used - 1);
if(err)
goto out;
return(err);
}
-static struct pollfd* setup_initial_poll(int fd)
+static struct pollfd *setup_initial_poll(int fd)
{
struct pollfd *p;
}
err = os_pipe(l_sigio_private, 1, 1);
if(err < 0){
- printk("write_sigio_workaround - os_pipe 1 failed, "
+ printk("write_sigio_workaround - os_pipe 2 failed, "
"err = %d\n", -err);
goto out_close1;
}
/* Did we race? Don't try to optimize this, please, it's not so likely
* to happen, and no more than once at the boot. */
if(write_sigio_pid != -1)
- goto out_unlock;
+ goto out_free;
- write_sigio_pid = run_helper_thread(write_sigio_thread, NULL,
- CLONE_FILES | CLONE_VM, &stack, 0);
-
- if (write_sigio_pid < 0)
- goto out_clear;
+ current_poll = ((struct pollfds) { .poll = p,
+ .used = 1,
+ .size = 1 });
if (write_sigio_irq(l_write_sigio_fds[0]))
- goto out_kill;
+ goto out_clear_poll;
- /* Success, finally. */
memcpy(write_sigio_fds, l_write_sigio_fds, sizeof(l_write_sigio_fds));
memcpy(sigio_private, l_sigio_private, sizeof(l_sigio_private));
- current_poll = ((struct pollfds) { .poll = p,
- .used = 1,
- .size = 1 });
+ write_sigio_pid = run_helper_thread(write_sigio_thread, NULL,
+ CLONE_FILES | CLONE_VM, &stack, 0);
- sigio_unlock();
- return;
+ if (write_sigio_pid < 0)
+ goto out_clear;
- out_kill:
- l_write_sigio_pid = write_sigio_pid;
- write_sigio_pid = -1;
sigio_unlock();
- /* Going to call waitpid, avoid holding the lock. */
- os_kill_process(l_write_sigio_pid, 1);
- goto out_free;
+ return;
- out_clear:
+out_clear:
write_sigio_pid = -1;
- out_unlock:
- sigio_unlock();
- out_free:
+ write_sigio_fds[0] = -1;
+ write_sigio_fds[1] = -1;
+ sigio_private[0] = -1;
+ sigio_private[1] = -1;
+out_clear_poll:
+ current_poll = ((struct pollfds) { .poll = NULL,
+ .size = 0,
+ .used = 0 });
+out_free:
kfree(p);
- out_close2:
- os_close_file(l_sigio_private[0]);
- os_close_file(l_sigio_private[1]);
- out_close1:
- os_close_file(l_write_sigio_fds[0]);
- os_close_file(l_write_sigio_fds[1]);
- return;
-}
-
-int read_sigio_fd(int fd)
-{
- int n;
- char c;
-
- n = os_read_file(fd, &c, sizeof(c));
- if(n != sizeof(c)){
- if(n < 0) {
- printk("read_sigio_fd - read failed, err = %d\n", -n);
- return(n);
- }
- else {
- printk("read_sigio_fd - short read, bytes = %d\n", n);
- return(-EIO);
- }
- }
- return(n);
+ sigio_unlock();
+out_close2:
+ close(l_sigio_private[0]);
+ close(l_sigio_private[1]);
+out_close1:
+ close(l_write_sigio_fds[0]);
+ close(l_write_sigio_fds[1]);
}
-static void sigio_cleanup(void)
+void sigio_cleanup(void)
{
- if (write_sigio_pid != -1) {
+ if(write_sigio_pid != -1){
os_kill_process(write_sigio_pid, 1);
write_sigio_pid = -1;
}
}
-
-__uml_exitcall(sigio_cleanup);
* Licensed under the GPL
*/
+#include <pty.h>
#include <stdio.h>
#include <stddef.h>
#include <stdarg.h>
return(1);
}
+
+/* Changed during early boot */
+int pty_output_sigio = 0;
+int pty_close_sigio = 0;
+
+/* Used as a flag during SIGIO testing early in boot */
+static volatile int got_sigio = 0;
+
+static void __init handler(int sig)
+{
+ got_sigio = 1;
+}
+
+struct openpty_arg {
+ int master;
+ int slave;
+ int err;
+};
+
+static void openpty_cb(void *arg)
+{
+ struct openpty_arg *info = arg;
+
+ info->err = 0;
+ if(openpty(&info->master, &info->slave, NULL, NULL, NULL))
+ info->err = -errno;
+}
+
+static void __init check_one_sigio(void (*proc)(int, int))
+{
+ struct sigaction old, new;
+ struct openpty_arg pty = { .master = -1, .slave = -1 };
+ int master, slave, err;
+
+ initial_thread_cb(openpty_cb, &pty);
+ if(pty.err){
+ printk("openpty failed, errno = %d\n", -pty.err);
+ return;
+ }
+
+ master = pty.master;
+ slave = pty.slave;
+
+ if((master == -1) || (slave == -1)){
+ printk("openpty failed to allocate a pty\n");
+ return;
+ }
+
+ /* Not now, but complain so we now where we failed. */
+ err = raw(master);
+ if (err < 0)
+ panic("check_sigio : __raw failed, errno = %d\n", -err);
+
+ err = os_sigio_async(master, slave);
+ if(err < 0)
+ panic("tty_fds : sigio_async failed, err = %d\n", -err);
+
+ if(sigaction(SIGIO, NULL, &old) < 0)
+ panic("check_sigio : sigaction 1 failed, errno = %d\n", errno);
+ new = old;
+ new.sa_handler = handler;
+ if(sigaction(SIGIO, &new, NULL) < 0)
+ panic("check_sigio : sigaction 2 failed, errno = %d\n", errno);
+
+ got_sigio = 0;
+ (*proc)(master, slave);
+
+ close(master);
+ close(slave);
+
+ if(sigaction(SIGIO, &old, NULL) < 0)
+ panic("check_sigio : sigaction 3 failed, errno = %d\n", errno);
+}
+
+static void tty_output(int master, int slave)
+{
+ int n;
+ char buf[512];
+
+ printk("Checking that host ptys support output SIGIO...");
+
+ memset(buf, 0, sizeof(buf));
+
+ while(os_write_file(master, buf, sizeof(buf)) > 0) ;
+ if(errno != EAGAIN)
+ panic("check_sigio : write failed, errno = %d\n", errno);
+ while(((n = os_read_file(slave, buf, sizeof(buf))) > 0) && !got_sigio) ;
+
+ if(got_sigio){
+ printk("Yes\n");
+ pty_output_sigio = 1;
+ }
+ else if(n == -EAGAIN) printk("No, enabling workaround\n");
+ else panic("check_sigio : read failed, err = %d\n", n);
+}
+
+static void tty_close(int master, int slave)
+{
+ printk("Checking that host ptys support SIGIO on close...");
+
+ close(slave);
+ if(got_sigio){
+ printk("Yes\n");
+ pty_close_sigio = 1;
+ }
+ else printk("No, enabling workaround\n");
+}
+
+void __init check_sigio(void)
+{
+ if((os_access("/dev/ptmx", OS_ACC_R_OK) < 0) &&
+ (os_access("/dev/ptyp0", OS_ACC_R_OK) < 0)){
+ printk("No pseudo-terminals available - skipping pty SIGIO "
+ "check\n");
+ return;
+ }
+ check_one_sigio(tty_output);
+ check_one_sigio(tty_close);
+}
+
+void os_check_bugs(void)
+{
+ check_ptrace();
+ check_sigio();
+ check_devanon();
+}
+
}
}
+void forward_ipi(int fd, int pid)
+{
+ int err;
+
+ err = os_set_owner(fd, pid);
+ if(err < 0)
+ printk("forward_ipi: set_owner failed, fd = %d, me = %d, "
+ "target = %d, err = %d\n", fd, os_getpid(), pid, -err);
+}
+
/*
*-------------------------
* only for tt mode (will be deleted in future...)
-/*
- * Copyright (C) 2002 Jeff Dike (jdike@karaya.com) and
+/*
+ * Copyright (C) 2002 Jeff Dike (jdike@karaya.com) and
* geoffrey hing <ghing@net.ohio-state.edu>
* Licensed under the GPL
*/
return(tty_log_fd);
}
- sprintf(buf, "%s/%0u-%0u", tty_log_dir, (unsigned int) tv.tv_sec,
+ sprintf(buf, "%s/%0u-%0u", tty_log_dir, (unsigned int) tv.tv_sec,
(unsigned int) tv.tv_usec);
fd = os_open_file(buf, of_append(of_create(of_rdwr(OPENFLAGS()))),
" tty data will be written. Preconfigure the descriptor with something\n"
" like '10>tty_log tty_log_fd=10'.\n\n"
);
-
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only. This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
goto out_close;
}
- if((kill(p, 0) == 0) || (errno != ESRCH))
+ if((kill(p, 0) == 0) || (errno != ESRCH)){
+ printk("umid \"%s\" is already in use by pid %d\n", umid, p);
return 1;
+ }
err = actually_do_remove(dir);
if(err)
err = mkdir(tmp, 0777);
if(err < 0){
err = -errno;
- if(errno != EEXIST)
+ if(err != -EEXIST)
goto err;
- if(not_dead_yet(tmp) < 0)
+ /* 1 -> this umid is already in use
+ * < 0 -> we couldn't remove the umid directory
+ * In either case, we can't use this umid, so return -EEXIST.
+ */
+ if(not_dead_yet(tmp) != 0)
goto err;
err = mkdir(tmp, 0777);
}
- if(err < 0){
- printk("Failed to create '%s' - err = %d\n", umid, err);
- goto err_rmdir;
+ if(err){
+ err = -errno;
+ printk("Failed to create '%s' - err = %d\n", umid, -errno);
+ goto err;
}
umid_setup = 1;
create_pid_file();
- return 0;
-
- err_rmdir:
- rmdir(tmp);
+ err = 0;
err:
return err;
}
static int __init make_umid_init(void)
{
+ if(!make_umid())
+ return 0;
+
+ /* If initializing with the given umid failed, then try again with
+ * a random one.
+ */
+ printk("Failed to initialize umid \"%s\", trying with a random umid\n",
+ umid);
+ *umid = '\0';
make_umid();
return 0;
#include <linux/config.h>
#include <linux/compiler.h>
#include "linux/sched.h"
+#include "linux/mm.h"
#include "asm/elf.h"
#include "asm/ptrace.h"
#include "asm/uaccess.h"
n = copy_from_user(&instr, (void __user *) addr, sizeof(instr));
if(n){
- printk("is_syscall : failed to read instruction from 0x%lx\n",
- addr);
- return(0);
+ /* access_process_vm() grants access to vsyscall and stub,
+ * while copy_from_user doesn't. Maybe access_process_vm is
+ * slow, but that doesn't matter, since it will be called only
+ * in case of singlestepping, if copy_from_user failed.
+ */
+ n = access_process_vm(current, addr, &instr, sizeof(instr), 0);
+ if(n != sizeof(instr)) {
+ printk("is_syscall : failed to read instruction from "
+ "0x%lx\n", addr);
+ return(1);
+ }
}
/* int 0x80 or sysenter */
return((instr == 0x80cd) || (instr == 0x340f));
}
int copy_sc_to_user_skas(struct sigcontext *to, struct _fpstate *to_fp,
- struct pt_regs *regs)
+ struct pt_regs *regs, unsigned long sp)
{
struct sigcontext sc;
unsigned long fpregs[HOST_FP_SIZE];
sc.edi = REGS_EDI(regs->regs.skas.regs);
sc.esi = REGS_ESI(regs->regs.skas.regs);
sc.ebp = REGS_EBP(regs->regs.skas.regs);
- sc.esp = REGS_SP(regs->regs.skas.regs);
+ sc.esp = sp;
sc.ebx = REGS_EBX(regs->regs.skas.regs);
sc.edx = REGS_EDX(regs->regs.skas.regs);
sc.ecx = REGS_ECX(regs->regs.skas.regs);
}
int copy_sc_to_user_tt(struct sigcontext *to, struct _fpstate *fp,
- struct sigcontext *from, int fpsize)
+ struct sigcontext *from, int fpsize, unsigned long sp)
{
struct _fpstate *to_fp, *from_fp;
int err;
to_fp = (fp ? fp : (struct _fpstate *) (to + 1));
from_fp = from->fpstate;
err = copy_to_user(to, from, sizeof(*to));
+
+ /* The SP in the sigcontext is the updated one for the signal
+ * delivery. The sp passed in is the original, and this needs
+ * to be restored, so we stick it in separately.
+ */
+ err |= copy_to_user(&SC_SP(to), sp, sizeof(sp));
+
if(from_fp != NULL){
err |= copy_to_user(&to->fpstate, &to_fp, sizeof(to->fpstate));
err |= copy_to_user(to_fp, from_fp, fpsize);
}
- return(err);
+ return err;
}
#endif
}
static int copy_sc_to_user(struct sigcontext *to, struct _fpstate *fp,
- struct pt_regs *from)
+ struct pt_regs *from, unsigned long sp)
{
return(CHOOSE_MODE(copy_sc_to_user_tt(to, fp, UPT_SC(&from->regs),
- sizeof(*fp)),
- copy_sc_to_user_skas(to, fp, from)));
+ sizeof(*fp), sp),
+ copy_sc_to_user_skas(to, fp, from, sp)));
}
static int copy_ucontext_to_user(struct ucontext *uc, struct _fpstate *fp,
err |= put_user(current->sas_ss_sp, &uc->uc_stack.ss_sp);
err |= put_user(sas_ss_flags(sp), &uc->uc_stack.ss_flags);
err |= put_user(current->sas_ss_size, &uc->uc_stack.ss_size);
- err |= copy_sc_to_user(&uc->uc_mcontext, fp, ¤t->thread.regs);
+ err |= copy_sc_to_user(&uc->uc_mcontext, fp, ¤t->thread.regs, sp);
err |= copy_to_user(&uc->uc_sigmask, set, sizeof(*set));
return(err);
}
{
struct sigframe __user *frame;
void *restorer;
+ unsigned long save_sp = PT_REGS_SP(regs);
int err = 0;
stack_top &= -8UL;
if(ka->sa.sa_flags & SA_RESTORER)
restorer = ka->sa.sa_restorer;
+ /* Update SP now because the page fault handler refuses to extend
+ * the stack if the faulting address is too far below the current
+ * SP, which frame now certainly is. If there's an error, the original
+ * value is restored on the way out.
+ * When writing the sigcontext to the stack, we have to write the
+ * original value, so that's passed to copy_sc_to_user, which does
+ * the right thing with it.
+ */
+ PT_REGS_SP(regs) = (unsigned long) frame;
+
err |= __put_user(restorer, &frame->pretcode);
err |= __put_user(sig, &frame->sig);
- err |= copy_sc_to_user(&frame->sc, NULL, regs);
+ err |= copy_sc_to_user(&frame->sc, NULL, regs, save_sp);
err |= __put_user(mask->sig[0], &frame->sc.oldmask);
if (_NSIG_WORDS > 1)
err |= __copy_to_user(&frame->extramask, &mask->sig[1],
err |= __put_user(0x80cd, (short __user *)(frame->retcode+6));
if(err)
- return(err);
+ goto err;
PT_REGS_SP(regs) = (unsigned long) frame;
PT_REGS_IP(regs) = (unsigned long) ka->sa.sa_handler;
if ((current->ptrace & PT_DTRACE) && (current->ptrace & PT_PTRACED))
ptrace_notify(SIGTRAP);
- return(0);
+ return 0;
+
+err:
+ PT_REGS_SP(regs) = save_sp;
+ return err;
}
int setup_signal_stack_si(unsigned long stack_top, int sig,
{
struct rt_sigframe __user *frame;
void *restorer;
+ unsigned long save_sp = PT_REGS_SP(regs);
int err = 0;
stack_top &= -8UL;
if(ka->sa.sa_flags & SA_RESTORER)
restorer = ka->sa.sa_restorer;
+ /* See comment above about why this is here */
+ PT_REGS_SP(regs) = (unsigned long) frame;
+
err |= __put_user(restorer, &frame->pretcode);
err |= __put_user(sig, &frame->sig);
err |= __put_user(&frame->info, &frame->pinfo);
err |= __put_user(&frame->uc, &frame->puc);
err |= copy_siginfo_to_user(&frame->info, info);
err |= copy_ucontext_to_user(&frame->uc, &frame->fpstate, mask,
- PT_REGS_SP(regs));
+ save_sp);
/*
* This is movl $,%eax ; int $0x80
err |= __put_user(0x80cd, (short __user *)(frame->retcode+5));
if(err)
- return(err);
+ goto err;
- PT_REGS_SP(regs) = (unsigned long) frame;
PT_REGS_IP(regs) = (unsigned long) ka->sa.sa_handler;
PT_REGS_EAX(regs) = (unsigned long) sig;
PT_REGS_EDX(regs) = (unsigned long) &frame->info;
if ((current->ptrace & PT_DTRACE) && (current->ptrace & PT_PTRACED))
ptrace_notify(SIGTRAP);
- return(0);
+ return 0;
+
+err:
+ PT_REGS_SP(regs) = save_sp;
+ return err;
}
long sys_sigreturn(struct pt_regs regs)
#include <asm/ptrace.h>
#include <asm/user.h>
#include <linux/stddef.h>
+#include <sys/poll.h>
#define DEFINE(sym, val) \
- asm volatile("\n->" #sym " %0 " #val : : "i" (val))
+ asm volatile("\n->" #sym " %0 " #val : : "i" (val))
#define DEFINE_LONGS(sym, val) \
- asm volatile("\n->" #sym " %0 " #val : : "i" (val/sizeof(unsigned long)))
+ asm volatile("\n->" #sym " %0 " #val : : "i" (val/sizeof(unsigned long)))
#define OFFSET(sym, str, mem) \
DEFINE(sym, offsetof(struct str, mem));
DEFINE(HOST_ES, ES);
DEFINE(HOST_GS, GS);
DEFINE(UM_FRAME_SIZE, sizeof(struct user_regs_struct));
+
+ /* XXX Duplicated between i386 and x86_64 */
+ DEFINE(UM_POLLIN, POLLIN);
+ DEFINE(UM_POLLPRI, POLLPRI);
+ DEFINE(UM_POLLOUT, POLLOUT);
}
#include <asm/ptrace.h>
#include <linux/sched.h>
#include <linux/errno.h>
+#include <linux/mm.h>
#include <asm/uaccess.h>
#include <asm/elf.h>
*/
}
+/* XXX Mostly copied from sys-i386 */
int is_syscall(unsigned long addr)
{
- panic("is_syscall");
+ unsigned short instr;
+ int n;
+
+ n = copy_from_user(&instr, (void __user *) addr, sizeof(instr));
+ if(n){
+ /* access_process_vm() grants access to vsyscall and stub,
+ * while copy_from_user doesn't. Maybe access_process_vm is
+ * slow, but that doesn't matter, since it will be called only
+ * in case of singlestepping, if copy_from_user failed.
+ */
+ n = access_process_vm(current, addr, &instr, sizeof(instr), 0);
+ if(n != sizeof(instr)) {
+ printk("is_syscall : failed to read instruction from "
+ "0x%lx\n", addr);
+ return(1);
+ }
+ }
+ /* sysenter */
+ return(instr == 0x050f);
}
int dump_fpu(struct pt_regs *regs, elf_fpregset_t *fpu )
}
int copy_sc_to_user_skas(struct sigcontext *to, struct _fpstate *to_fp,
- struct pt_regs *regs, unsigned long mask)
+ struct pt_regs *regs, unsigned long mask,
+ unsigned long sp)
{
struct faultinfo * fi = ¤t->thread.arch.faultinfo;
int err = 0;
err |= PUTREG(regs, RDI, to, rdi);
err |= PUTREG(regs, RSI, to, rsi);
err |= PUTREG(regs, RBP, to, rbp);
- err |= PUTREG(regs, RSP, to, rsp);
+ /* Must use orignal RSP, which is passed in, rather than what's in
+ * the pt_regs, because that's already been updated to point at the
+ * signal frame.
+ */
+ err |= __put_user(sp, &to->rsp);
err |= PUTREG(regs, RBX, to, rbx);
err |= PUTREG(regs, RDX, to, rdx);
err |= PUTREG(regs, RCX, to, rcx);
#ifdef CONFIG_MODE_TT
int copy_sc_from_user_tt(struct sigcontext *to, struct sigcontext *from,
- int fpsize)
+ int fpsize)
{
struct _fpstate *to_fp, *from_fp;
unsigned long sigs;
}
int copy_sc_to_user_tt(struct sigcontext *to, struct _fpstate *fp,
- struct sigcontext *from, int fpsize)
+ struct sigcontext *from, int fpsize, unsigned long sp)
{
struct _fpstate *to_fp, *from_fp;
int err;
to_fp = (fp ? fp : (struct _fpstate *) (to + 1));
from_fp = from->fpstate;
err = copy_to_user(to, from, sizeof(*to));
+ /* The SP in the sigcontext is the updated one for the signal
+ * delivery. The sp passed in is the original, and this needs
+ * to be restored, so we stick it in separately.
+ */
+ err |= copy_to_user(&SC_SP(to), sp, sizeof(sp));
+
if(from_fp != NULL){
err |= copy_to_user(&to->fpstate, &to_fp, sizeof(to->fpstate));
err |= copy_to_user(to_fp, from_fp, fpsize);
}
- return(err);
+ return err;
}
#endif
}
static int copy_sc_to_user(struct sigcontext *to, struct _fpstate *fp,
- struct pt_regs *from, unsigned long mask)
+ struct pt_regs *from, unsigned long mask,
+ unsigned long sp)
{
return(CHOOSE_MODE(copy_sc_to_user_tt(to, fp, UPT_SC(&from->regs),
- sizeof(*fp)),
- copy_sc_to_user_skas(to, fp, from, mask)));
+ sizeof(*fp), sp),
+ copy_sc_to_user_skas(to, fp, from, mask, sp)));
}
struct rt_sigframe
{
struct rt_sigframe __user *frame;
struct _fpstate __user *fp = NULL;
+ unsigned long save_sp = PT_REGS_RSP(regs);
int err = 0;
struct task_struct *me = current;
goto out;
}
+ /* Update SP now because the page fault handler refuses to extend
+ * the stack if the faulting address is too far below the current
+ * SP, which frame now certainly is. If there's an error, the original
+ * value is restored on the way out.
+ * When writing the sigcontext to the stack, we have to write the
+ * original value, so that's passed to copy_sc_to_user, which does
+ * the right thing with it.
+ */
+ PT_REGS_RSP(regs) = (unsigned long) frame;
+
/* Create the ucontext. */
err |= __put_user(0, &frame->uc.uc_flags);
err |= __put_user(0, &frame->uc.uc_link);
err |= __put_user(me->sas_ss_sp, &frame->uc.uc_stack.ss_sp);
- err |= __put_user(sas_ss_flags(PT_REGS_SP(regs)),
+ err |= __put_user(sas_ss_flags(save_sp),
&frame->uc.uc_stack.ss_flags);
err |= __put_user(me->sas_ss_size, &frame->uc.uc_stack.ss_size);
- err |= copy_sc_to_user(&frame->uc.uc_mcontext, fp, regs, set->sig[0]);
+ err |= copy_sc_to_user(&frame->uc.uc_mcontext, fp, regs, set->sig[0],
+ save_sp);
err |= __put_user(fp, &frame->uc.uc_mcontext.fpstate);
if (sizeof(*set) == 16) {
__put_user(set->sig[0], &frame->uc.uc_sigmask.sig[0]);
err |= __put_user(ka->sa.sa_restorer, &frame->pretcode);
else
/* could use a vstub here */
- goto out;
+ goto restore_sp;
if (err)
- goto out;
+ goto restore_sp;
/* Set up registers for signal handler */
{
PT_REGS_RSI(regs) = (unsigned long) &frame->info;
PT_REGS_RDX(regs) = (unsigned long) &frame->uc;
PT_REGS_RIP(regs) = (unsigned long) ka->sa.sa_handler;
-
- PT_REGS_RSP(regs) = (unsigned long) frame;
out:
- return(err);
+ return err;
+
+restore_sp:
+ PT_REGS_RSP(regs) = save_sp;
+ return err;
}
long sys_rt_sigreturn(struct pt_regs *regs)
#include <stdio.h>
#include <stddef.h>
#include <signal.h>
+#include <sys/poll.h>
#define __FRAME_OFFSETS
#include <asm/ptrace.h>
#include <asm/types.h>
DEFINE_LONGS(HOST_IP, RIP);
DEFINE_LONGS(HOST_SP, RSP);
DEFINE(UM_FRAME_SIZE, sizeof(struct user_regs_struct));
+
+ /* XXX Duplicated between i386 and x86_64 */
+ DEFINE(UM_POLLIN, POLLIN);
+ DEFINE(UM_POLLPRI, POLLPRI);
+ DEFINE(UM_POLLOUT, POLLOUT);
}
cost of slightly increased overhead in some places. If unsure say
N here.
+config SCHED_MC
+ bool "Multi-core scheduler support"
+ depends on SMP
+ default y
+ help
+ Multi-core scheduler support improves the CPU scheduler's decision
+ making when dealing with multi-core CPU chips at a cost of slightly
+ increased overhead in some places. If unsure say N here.
+
source "kernel/Kconfig.preempt"
config NUMA
def_bool y
depends on NUMA
+config OUT_OF_LINE_PFN_TO_PAGE
+ def_bool y
+ depends on DISCONTIGMEM
+
config NR_CPUS
int "Maximum number of CPUs (2-256)"
range 2 255
.quad sys_ni_syscall /* pselect6 for now */
.quad sys_ni_syscall /* ppoll for now */
.quad sys_unshare /* 310 */
+ .quad compat_sys_set_robust_list
+ .quad compat_sys_get_robust_list
ia32_syscall_end:
.rept IA32_NR_syscalls-(ia32_syscall_end-ia32_sys_call_table)/8
.quad ni_syscall
void (*pm_idle)(void);
static DEFINE_PER_CPU(unsigned int, cpu_idle_state);
-static struct notifier_block *idle_notifier;
-static DEFINE_SPINLOCK(idle_notifier_lock);
+static ATOMIC_NOTIFIER_HEAD(idle_notifier);
void idle_notifier_register(struct notifier_block *n)
{
- unsigned long flags;
- spin_lock_irqsave(&idle_notifier_lock, flags);
- notifier_chain_register(&idle_notifier, n);
- spin_unlock_irqrestore(&idle_notifier_lock, flags);
+ atomic_notifier_chain_register(&idle_notifier, n);
}
EXPORT_SYMBOL_GPL(idle_notifier_register);
void idle_notifier_unregister(struct notifier_block *n)
{
- unsigned long flags;
- spin_lock_irqsave(&idle_notifier_lock, flags);
- notifier_chain_unregister(&idle_notifier, n);
- spin_unlock_irqrestore(&idle_notifier_lock, flags);
+ atomic_notifier_chain_unregister(&idle_notifier, n);
}
EXPORT_SYMBOL(idle_notifier_unregister);
void enter_idle(void)
{
__get_cpu_var(idle_state) = CPU_IDLE;
- notifier_call_chain(&idle_notifier, IDLE_START, NULL);
+ atomic_notifier_call_chain(&idle_notifier, IDLE_START, NULL);
}
static void __exit_idle(void)
{
__get_cpu_var(idle_state) = CPU_NOT_IDLE;
- notifier_call_chain(&idle_notifier, IDLE_END, NULL);
+ atomic_notifier_call_chain(&idle_notifier, IDLE_END, NULL);
}
/* Called from interrupts to signify idle end */
cpuid(1, &eax, &ebx, &ecx, &edx);
- c->apicid = phys_pkg_id(0);
if (!cpu_has(c, X86_FEATURE_HT) || cpu_has(c, X86_FEATURE_CMP_LEGACY))
return;
c->x86_capability[2] = cpuid_edx(0x80860001);
}
+ c->apicid = phys_pkg_id(0);
+
/*
* Vendor-specific initialization. In this section we
* canonicalize the feature flags, meaning if there are
/* core ID of each logical CPU */
u8 cpu_core_id[NR_CPUS] __read_mostly = { [0 ... NR_CPUS-1] = BAD_APICID };
+/* Last level cache ID of each logical CPU */
+u8 cpu_llc_id[NR_CPUS] __cpuinitdata = {[0 ... NR_CPUS-1] = BAD_APICID};
+
/* Bitmask of currently online CPUs */
cpumask_t cpu_online_map __read_mostly;
cpu_set(cpuid, cpu_callin_map);
}
+/* maps the cpu to the sched domain representing multi-core */
+cpumask_t cpu_coregroup_map(int cpu)
+{
+ struct cpuinfo_x86 *c = cpu_data + cpu;
+ /*
+ * For perf, we return last level cache shared map.
+ * TBD: when power saving sched policy is added, we will return
+ * cpu_core_map when power saving policy is enabled
+ */
+ return c->llc_shared_map;
+}
+
/* representing cpus for which sibling maps can be computed */
static cpumask_t cpu_sibling_setup_map;
cpu_set(cpu, cpu_sibling_map[i]);
cpu_set(i, cpu_core_map[cpu]);
cpu_set(cpu, cpu_core_map[i]);
+ cpu_set(i, c[cpu].llc_shared_map);
+ cpu_set(cpu, c[i].llc_shared_map);
}
}
} else {
cpu_set(cpu, cpu_sibling_map[cpu]);
}
+ cpu_set(cpu, c[cpu].llc_shared_map);
+
if (current_cpu_data.x86_max_cores == 1) {
cpu_core_map[cpu] = cpu_sibling_map[cpu];
c[cpu].booted_cores = 1;
}
for_each_cpu_mask(i, cpu_sibling_setup_map) {
+ if (cpu_llc_id[cpu] != BAD_APICID &&
+ cpu_llc_id[cpu] == cpu_llc_id[i]) {
+ cpu_set(i, c[cpu].llc_shared_map);
+ cpu_set(cpu, c[i].llc_shared_map);
+ }
if (phys_proc_id[cpu] == phys_proc_id[i]) {
cpu_set(i, cpu_core_map[cpu]);
cpu_set(cpu, cpu_core_map[i]);
static unsigned long get_cmos_time(void)
{
- unsigned int timeout = 1000000, year, mon, day, hour, min, sec;
- unsigned char uip = 0, this = 0;
+ unsigned int year, mon, day, hour, min, sec;
unsigned long flags;
unsigned extyear = 0;
-/*
- * The Linux interpretation of the CMOS clock register contents: When the
- * Update-In-Progress (UIP) flag goes from 1 to 0, the RTC registers show the
- * second which has precisely just started. Waiting for this can take up to 1
- * second, we timeout approximately after 2.4 seconds on a machine with
- * standard 8.3 MHz ISA bus.
- */
-
spin_lock_irqsave(&rtc_lock, flags);
- while (timeout && (!uip || this)) {
- uip |= this;
- this = CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP;
- timeout--;
- }
-
- /*
- * Here we are safe to assume the registers won't change for a whole
- * second, so we just go ahead and read them.
- */
- sec = CMOS_READ(RTC_SECONDS);
- min = CMOS_READ(RTC_MINUTES);
- hour = CMOS_READ(RTC_HOURS);
- day = CMOS_READ(RTC_DAY_OF_MONTH);
- mon = CMOS_READ(RTC_MONTH);
- year = CMOS_READ(RTC_YEAR);
-
+ do {
+ sec = CMOS_READ(RTC_SECONDS);
+ min = CMOS_READ(RTC_MINUTES);
+ hour = CMOS_READ(RTC_HOURS);
+ day = CMOS_READ(RTC_DAY_OF_MONTH);
+ mon = CMOS_READ(RTC_MONTH);
+ year = CMOS_READ(RTC_YEAR);
#ifdef CONFIG_ACPI
- if (acpi_fadt.revision >= FADT2_REVISION_ID && acpi_fadt.century)
- extyear = CMOS_READ(acpi_fadt.century);
+ if (acpi_fadt.revision >= FADT2_REVISION_ID &&
+ acpi_fadt.century)
+ extyear = CMOS_READ(acpi_fadt.century);
#endif
+ } while (sec != CMOS_READ(RTC_SECONDS));
spin_unlock_irqrestore(&rtc_lock, flags);
asmlinkage void machine_check(void);
asmlinkage void spurious_interrupt_bug(void);
-struct notifier_block *die_chain;
-static DEFINE_SPINLOCK(die_notifier_lock);
+ATOMIC_NOTIFIER_HEAD(die_chain);
int register_die_notifier(struct notifier_block *nb)
{
- int err = 0;
- unsigned long flags;
-
vmalloc_sync_all();
- spin_lock_irqsave(&die_notifier_lock, flags);
- err = notifier_chain_register(&die_chain, nb);
- spin_unlock_irqrestore(&die_notifier_lock, flags);
- return err;
+ return atomic_notifier_chain_register(&die_chain, nb);
+}
+EXPORT_SYMBOL(register_die_notifier);
+
+int unregister_die_notifier(struct notifier_block *nb)
+{
+ return atomic_notifier_chain_unregister(&die_chain, nb);
}
+EXPORT_SYMBOL(unregister_die_notifier);
static inline void conditional_sti(struct pt_regs *regs)
{
show_free_areas();
printk(KERN_INFO "Free swap: %6ldkB\n", nr_swap_pages<<(PAGE_SHIFT-10));
- for_each_pgdat(pgdat) {
+ for_each_online_pgdat(pgdat) {
for (i = 0; i < pgdat->node_spanned_pages; ++i) {
page = pfn_to_page(pgdat->node_start_pfn + i);
total++;
* Should do that.
*/
-/* Requires pfn_valid(pfn) to be true */
-struct page *pfn_to_page(unsigned long pfn)
-{
- int nid = phys_to_nid(((unsigned long)(pfn)) << PAGE_SHIFT);
- return (pfn - node_start_pfn(nid)) + NODE_DATA(nid)->node_mem_map;
-}
-EXPORT_SYMBOL(pfn_to_page);
-
-unsigned long page_to_pfn(struct page *page)
-{
- return (long)(((page) - page_zone(page)->zone_mem_map) +
- page_zone(page)->zone_start_pfn);
-}
-EXPORT_SYMBOL(page_to_pfn);
-
int pfn_valid(unsigned long pfn)
{
unsigned nid;
void __init platform_setup(char **p_cmdline)
{
- notifier_chain_register(&panic_notifier_list, &iss_panic_block);
+ atomic_notifier_chain_register(&panic_notifier_list, &iss_panic_block);
}
config BLK_DEV_IO_TRACE
bool "Support for tracing block io actions"
+ depends on SYSFS
select RELAY
select DEBUG_FS
help
static const int cfq_slice_sync = HZ / 10;
static int cfq_slice_async = HZ / 25;
static const int cfq_slice_async_rq = 2;
-static int cfq_slice_idle = HZ / 100;
+static int cfq_slice_idle = HZ / 70;
#define CFQ_IDLE_GRACE (HZ / 10)
#define CFQ_SLICE_SCALE (5)
#define CFQ_KEY_ASYNC (0)
-#define CFQ_KEY_ANY (0xffff)
-
-/*
- * disable queueing at the driver/hardware level
- */
-static const int cfq_max_depth = 2;
static DEFINE_RWLOCK(cfq_exit_lock);
#define cfq_cfqq_sync(cfqq) \
(cfq_cfqq_class_sync(cfqq) || (cfqq)->on_dispatch[SYNC])
+#define sample_valid(samples) ((samples) > 80)
+
/*
* Per block device queue structure
*/
unsigned int cfq_slice[2];
unsigned int cfq_slice_async_rq;
unsigned int cfq_slice_idle;
- unsigned int cfq_max_depth;
struct list_head cic_list;
};
return !cfqd->busy_queues;
}
+static inline pid_t cfq_queue_pid(struct task_struct *task, int rw)
+{
+ if (rw == READ || process_sync(task))
+ return task->pid;
+
+ return CFQ_KEY_ASYNC;
+}
+
/*
* Lifted from AS - choose which of crq1 and crq2 that is best served now.
* We choose the request that is closest to the head right now. Distance
- * behind the head are penalized and only allowed to a certain extent.
+ * behind the head is penalized and only allowed to a certain extent.
*/
static struct cfq_rq *
cfq_choose_req(struct cfq_data *cfqd, struct cfq_rq *crq1, struct cfq_rq *crq2)
{
sector_t last, s1, s2, d1 = 0, d2 = 0;
- int r1_wrap = 0, r2_wrap = 0; /* requests are behind the disk head */
unsigned long back_max;
+#define CFQ_RQ1_WRAP 0x01 /* request 1 wraps */
+#define CFQ_RQ2_WRAP 0x02 /* request 2 wraps */
+ unsigned wrap = 0; /* bit mask: requests behind the disk head? */
if (crq1 == NULL || crq1 == crq2)
return crq2;
else if (s1 + back_max >= last)
d1 = (last - s1) * cfqd->cfq_back_penalty;
else
- r1_wrap = 1;
+ wrap |= CFQ_RQ1_WRAP;
if (s2 >= last)
d2 = s2 - last;
else if (s2 + back_max >= last)
d2 = (last - s2) * cfqd->cfq_back_penalty;
else
- r2_wrap = 1;
+ wrap |= CFQ_RQ2_WRAP;
/* Found required data */
- if (!r1_wrap && r2_wrap)
- return crq1;
- else if (!r2_wrap && r1_wrap)
- return crq2;
- else if (r1_wrap && r2_wrap) {
- /* both behind the head */
- if (s1 <= s2)
+
+ /*
+ * By doing switch() on the bit mask "wrap" we avoid having to
+ * check two variables for all permutations: --> faster!
+ */
+ switch (wrap) {
+ case 0: /* common case for CFQ: crq1 and crq2 not wrapped */
+ if (d1 < d2)
return crq1;
- else
+ else if (d2 < d1)
return crq2;
- }
+ else {
+ if (s1 >= s2)
+ return crq1;
+ else
+ return crq2;
+ }
- /* Both requests in front of the head */
- if (d1 < d2)
+ case CFQ_RQ2_WRAP:
return crq1;
- else if (d2 < d1)
+ case CFQ_RQ1_WRAP:
return crq2;
- else {
- if (s1 >= s2)
+ case (CFQ_RQ1_WRAP|CFQ_RQ2_WRAP): /* both crqs wrapped */
+ default:
+ /*
+ * Since both rqs are wrapped,
+ * start with the one that's further behind head
+ * (--> only *one* back seek required),
+ * since back seek takes more time than forward.
+ */
+ if (s1 <= s2)
return crq1;
else
return crq2;
cfq_add_crq_rb(crq);
}
-static struct request *cfq_find_rq_rb(struct cfq_data *cfqd, sector_t sector)
-
+static struct request *
+cfq_find_rq_fmerge(struct cfq_data *cfqd, struct bio *bio)
{
- struct cfq_queue *cfqq = cfq_find_cfq_hash(cfqd, current->pid, CFQ_KEY_ANY);
+ struct task_struct *tsk = current;
+ pid_t key = cfq_queue_pid(tsk, bio_data_dir(bio));
+ struct cfq_queue *cfqq;
struct rb_node *n;
+ sector_t sector;
+ cfqq = cfq_find_cfq_hash(cfqd, key, tsk->ioprio);
if (!cfqq)
goto out;
+ sector = bio->bi_sector + bio_sectors(bio);
n = cfqq->sort_list.rb_node;
while (n) {
struct cfq_rq *crq = rb_entry_crq(n);
goto out;
}
- __rq = cfq_find_rq_rb(cfqd, bio->bi_sector + bio_sectors(bio));
+ __rq = cfq_find_rq_fmerge(cfqd, bio);
if (__rq && elv_rq_merge_ok(__rq, bio)) {
ret = ELEVATOR_FRONT_MERGE;
goto out;
static int cfq_arm_slice_timer(struct cfq_data *cfqd, struct cfq_queue *cfqq)
{
+ struct cfq_io_context *cic;
unsigned long sl;
WARN_ON(!RB_EMPTY(&cfqq->sort_list));
/*
* task has exited, don't wait
*/
- if (cfqd->active_cic && !cfqd->active_cic->ioc->task)
+ cic = cfqd->active_cic;
+ if (!cic || !cic->ioc->task)
return 0;
cfq_mark_cfqq_must_dispatch(cfqq);
cfq_mark_cfqq_wait_request(cfqq);
sl = min(cfqq->slice_end - 1, (unsigned long) cfqd->cfq_slice_idle);
+
+ /*
+ * we don't want to idle for seeks, but we do want to allow
+ * fair distribution of slice time for a process doing back-to-back
+ * seeks. so allow a little bit of time for him to submit a new rq
+ */
+ if (sample_valid(cic->seek_samples) && cic->seek_mean > 131072)
+ sl = 2;
+
mod_timer(&cfqd->idle_slice_timer, jiffies + sl);
return 1;
}
if (cfqq) {
int max_dispatch;
- /*
- * if idle window is disabled, allow queue buildup
- */
- if (!cfq_cfqq_idle_window(cfqq) &&
- cfqd->rq_in_driver >= cfqd->cfq_max_depth)
- return 0;
-
cfq_clear_cfqq_must_dispatch(cfqq);
cfq_clear_cfqq_wait_request(cfqq);
del_timer(&cfqd->idle_slice_timer);
const int hashval)
{
struct hlist_head *hash_list = &cfqd->cfq_hash[hashval];
- struct hlist_node *entry, *next;
+ struct hlist_node *entry;
+ struct cfq_queue *__cfqq;
- hlist_for_each_safe(entry, next, hash_list) {
- struct cfq_queue *__cfqq = list_entry_qhash(entry);
+ hlist_for_each_entry(__cfqq, entry, hash_list, cfq_hash) {
const unsigned short __p = IOPRIO_PRIO_VALUE(__cfqq->org_ioprio_class, __cfqq->org_ioprio);
- if (__cfqq->key == key && (__p == prio || prio == CFQ_KEY_ANY))
+ if (__cfqq->key == key && (__p == prio || !prio))
return __cfqq;
}
return __cfq_find_cfq_hash(cfqd, key, prio, hash_long(key, CFQ_QHASH_SHIFT));
}
-static void cfq_free_io_context(struct cfq_io_context *cic)
+static void cfq_free_io_context(struct io_context *ioc)
{
struct cfq_io_context *__cic;
- struct list_head *entry, *next;
- int freed = 1;
+ struct rb_node *n;
+ int freed = 0;
- list_for_each_safe(entry, next, &cic->list) {
- __cic = list_entry(entry, struct cfq_io_context, list);
+ while ((n = rb_first(&ioc->cic_root)) != NULL) {
+ __cic = rb_entry(n, struct cfq_io_context, rb_node);
+ rb_erase(&__cic->rb_node, &ioc->cic_root);
kmem_cache_free(cfq_ioc_pool, __cic);
freed++;
}
- kmem_cache_free(cfq_ioc_pool, cic);
if (atomic_sub_and_test(freed, &ioc_count) && ioc_gone)
complete(ioc_gone);
}
static void cfq_trim(struct io_context *ioc)
{
ioc->set_ioprio = NULL;
- if (ioc->cic)
- cfq_free_io_context(ioc->cic);
+ cfq_free_io_context(ioc);
}
/*
spin_unlock(q->queue_lock);
}
-static void cfq_exit_io_context(struct cfq_io_context *cic)
+static void cfq_exit_io_context(struct io_context *ioc)
{
struct cfq_io_context *__cic;
- struct list_head *entry;
unsigned long flags;
-
- local_irq_save(flags);
+ struct rb_node *n;
/*
* put the reference this task is holding to the various queues
*/
- read_lock(&cfq_exit_lock);
- list_for_each(entry, &cic->list) {
- __cic = list_entry(entry, struct cfq_io_context, list);
+ read_lock_irqsave(&cfq_exit_lock, flags);
+
+ n = rb_first(&ioc->cic_root);
+ while (n != NULL) {
+ __cic = rb_entry(n, struct cfq_io_context, rb_node);
+
cfq_exit_single_io_context(__cic);
+ n = rb_next(n);
}
- cfq_exit_single_io_context(cic);
- read_unlock(&cfq_exit_lock);
- local_irq_restore(flags);
+ read_unlock_irqrestore(&cfq_exit_lock, flags);
}
static struct cfq_io_context *
struct cfq_io_context *cic = kmem_cache_alloc(cfq_ioc_pool, gfp_mask);
if (cic) {
- INIT_LIST_HEAD(&cic->list);
+ RB_CLEAR(&cic->rb_node);
+ cic->key = NULL;
cic->cfqq[ASYNC] = NULL;
cic->cfqq[SYNC] = NULL;
- cic->key = NULL;
cic->last_end_request = jiffies;
cic->ttime_total = 0;
cic->ttime_samples = 0;
static int cfq_ioc_set_ioprio(struct io_context *ioc, unsigned int ioprio)
{
struct cfq_io_context *cic;
+ struct rb_node *n;
write_lock(&cfq_exit_lock);
- cic = ioc->cic;
-
- changed_ioprio(cic);
-
- list_for_each_entry(cic, &cic->list, list)
+ n = rb_first(&ioc->cic_root);
+ while (n != NULL) {
+ cic = rb_entry(n, struct cfq_io_context, rb_node);
+
changed_ioprio(cic);
+ n = rb_next(n);
+ }
write_unlock(&cfq_exit_lock);
return cfqq;
}
+static struct cfq_io_context *
+cfq_cic_rb_lookup(struct cfq_data *cfqd, struct io_context *ioc)
+{
+ struct rb_node *n = ioc->cic_root.rb_node;
+ struct cfq_io_context *cic;
+ void *key = cfqd;
+
+ while (n) {
+ cic = rb_entry(n, struct cfq_io_context, rb_node);
+
+ if (key < cic->key)
+ n = n->rb_left;
+ else if (key > cic->key)
+ n = n->rb_right;
+ else
+ return cic;
+ }
+
+ return NULL;
+}
+
+static inline void
+cfq_cic_link(struct cfq_data *cfqd, struct io_context *ioc,
+ struct cfq_io_context *cic)
+{
+ struct rb_node **p = &ioc->cic_root.rb_node;
+ struct rb_node *parent = NULL;
+ struct cfq_io_context *__cic;
+
+ read_lock(&cfq_exit_lock);
+
+ cic->ioc = ioc;
+ cic->key = cfqd;
+
+ ioc->set_ioprio = cfq_ioc_set_ioprio;
+
+ while (*p) {
+ parent = *p;
+ __cic = rb_entry(parent, struct cfq_io_context, rb_node);
+
+ if (cic->key < __cic->key)
+ p = &(*p)->rb_left;
+ else if (cic->key > __cic->key)
+ p = &(*p)->rb_right;
+ else
+ BUG();
+ }
+
+ rb_link_node(&cic->rb_node, parent, p);
+ rb_insert_color(&cic->rb_node, &ioc->cic_root);
+ list_add(&cic->queue_list, &cfqd->cic_list);
+ read_unlock(&cfq_exit_lock);
+}
+
/*
* Setup general io context and cfq io context. There can be several cfq
* io contexts per general io context, if this process is doing io to more
- * than one device managed by cfq. Note that caller is holding a reference to
- * cfqq, so we don't need to worry about it disappearing
+ * than one device managed by cfq.
*/
static struct cfq_io_context *
-cfq_get_io_context(struct cfq_data *cfqd, pid_t pid, gfp_t gfp_mask)
+cfq_get_io_context(struct cfq_data *cfqd, gfp_t gfp_mask)
{
struct io_context *ioc = NULL;
struct cfq_io_context *cic;
if (!ioc)
return NULL;
-restart:
- if ((cic = ioc->cic) == NULL) {
- cic = cfq_alloc_io_context(cfqd, gfp_mask);
-
- if (cic == NULL)
- goto err;
-
- /*
- * manually increment generic io_context usage count, it
- * cannot go away since we are already holding one ref to it
- */
- cic->ioc = ioc;
- cic->key = cfqd;
- read_lock(&cfq_exit_lock);
- ioc->set_ioprio = cfq_ioc_set_ioprio;
- ioc->cic = cic;
- list_add(&cic->queue_list, &cfqd->cic_list);
- read_unlock(&cfq_exit_lock);
- } else {
- struct cfq_io_context *__cic;
-
- /*
- * the first cic on the list is actually the head itself
- */
- if (cic->key == cfqd)
- goto out;
-
- if (unlikely(!cic->key)) {
- read_lock(&cfq_exit_lock);
- if (list_empty(&cic->list))
- ioc->cic = NULL;
- else
- ioc->cic = list_entry(cic->list.next,
- struct cfq_io_context,
- list);
- read_unlock(&cfq_exit_lock);
- kmem_cache_free(cfq_ioc_pool, cic);
- atomic_dec(&ioc_count);
- goto restart;
- }
-
- /*
- * cic exists, check if we already are there. linear search
- * should be ok here, the list will usually not be more than
- * 1 or a few entries long
- */
- list_for_each_entry(__cic, &cic->list, list) {
- /*
- * this process is already holding a reference to
- * this queue, so no need to get one more
- */
- if (__cic->key == cfqd) {
- cic = __cic;
- goto out;
- }
- if (unlikely(!__cic->key)) {
- read_lock(&cfq_exit_lock);
- list_del(&__cic->list);
- read_unlock(&cfq_exit_lock);
- kmem_cache_free(cfq_ioc_pool, __cic);
- atomic_dec(&ioc_count);
- goto restart;
- }
- }
+ cic = cfq_cic_rb_lookup(cfqd, ioc);
+ if (cic)
+ goto out;
- /*
- * nope, process doesn't have a cic assoicated with this
- * cfqq yet. get a new one and add to list
- */
- __cic = cfq_alloc_io_context(cfqd, gfp_mask);
- if (__cic == NULL)
- goto err;
-
- __cic->ioc = ioc;
- __cic->key = cfqd;
- read_lock(&cfq_exit_lock);
- list_add(&__cic->list, &cic->list);
- list_add(&__cic->queue_list, &cfqd->cic_list);
- read_unlock(&cfq_exit_lock);
- cic = __cic;
- }
+ cic = cfq_alloc_io_context(cfqd, gfp_mask);
+ if (cic == NULL)
+ goto err;
+ cfq_cic_link(cfqd, ioc, cic);
out:
return cic;
err:
cic->ttime_mean = (cic->ttime_total + 128) / cic->ttime_samples;
}
-#define sample_valid(samples) ((samples) > 80)
+static void
+cfq_update_io_seektime(struct cfq_data *cfqd, struct cfq_io_context *cic,
+ struct cfq_rq *crq)
+{
+ sector_t sdist;
+ u64 total;
+
+ if (cic->last_request_pos < crq->request->sector)
+ sdist = crq->request->sector - cic->last_request_pos;
+ else
+ sdist = cic->last_request_pos - crq->request->sector;
+
+ /*
+ * Don't allow the seek distance to get too large from the
+ * odd fragment, pagein, etc
+ */
+ if (cic->seek_samples <= 60) /* second&third seek */
+ sdist = min(sdist, (cic->seek_mean * 4) + 2*1024*1024);
+ else
+ sdist = min(sdist, (cic->seek_mean * 4) + 2*1024*64);
+
+ cic->seek_samples = (7*cic->seek_samples + 256) / 8;
+ cic->seek_total = (7*cic->seek_total + (u64)256*sdist) / 8;
+ total = cic->seek_total + (cic->seek_samples/2);
+ do_div(total, cic->seek_samples);
+ cic->seek_mean = (sector_t)total;
+}
/*
* Disable idle window if the process thinks too long or seeks so much that
cic = crq->io_context;
cfq_update_io_thinktime(cfqd, cic);
+ cfq_update_io_seektime(cfqd, cic, crq);
cfq_update_idle_window(cfqd, cfqq, cic);
cic->last_queue = jiffies;
+ cic->last_request_pos = crq->request->sector + crq->request->nr_sectors;
if (cfqq == cfqd->active_queue) {
/*
cfq_resort_rr_list(cfqq, 0);
}
-static inline pid_t cfq_queue_pid(struct task_struct *task, int rw)
-{
- if (rw == READ || process_sync(task))
- return task->pid;
-
- return CFQ_KEY_ASYNC;
-}
-
static inline int
__cfq_may_queue(struct cfq_data *cfqd, struct cfq_queue *cfqq,
struct task_struct *task, int rw)
might_sleep_if(gfp_mask & __GFP_WAIT);
- cic = cfq_get_io_context(cfqd, key, gfp_mask);
+ cic = cfq_get_io_context(cfqd, gfp_mask);
spin_lock_irqsave(q->queue_lock, flags);
request_queue_t *q = cfqd->queue;
cfq_shutdown_timer_wq(cfqd);
+
write_lock(&cfq_exit_lock);
spin_lock_irq(q->queue_lock);
+
if (cfqd->active_queue)
__cfq_slice_expired(cfqd, cfqd->active_queue, 0);
- while(!list_empty(&cfqd->cic_list)) {
+
+ while (!list_empty(&cfqd->cic_list)) {
struct cfq_io_context *cic = list_entry(cfqd->cic_list.next,
struct cfq_io_context,
queue_list);
cic->key = NULL;
list_del_init(&cic->queue_list);
}
+
spin_unlock_irq(q->queue_lock);
write_unlock(&cfq_exit_lock);
cfqd->cfq_slice[1] = cfq_slice_sync;
cfqd->cfq_slice_async_rq = cfq_slice_async_rq;
cfqd->cfq_slice_idle = cfq_slice_idle;
- cfqd->cfq_max_depth = cfq_max_depth;
return 0;
out_crqpool:
SHOW_FUNCTION(cfq_slice_sync_show, cfqd->cfq_slice[1], 1);
SHOW_FUNCTION(cfq_slice_async_show, cfqd->cfq_slice[0], 1);
SHOW_FUNCTION(cfq_slice_async_rq_show, cfqd->cfq_slice_async_rq, 0);
-SHOW_FUNCTION(cfq_max_depth_show, cfqd->cfq_max_depth, 0);
#undef SHOW_FUNCTION
#define STORE_FUNCTION(__FUNC, __PTR, MIN, MAX, __CONV) \
STORE_FUNCTION(cfq_slice_sync_store, &cfqd->cfq_slice[1], 1, UINT_MAX, 1);
STORE_FUNCTION(cfq_slice_async_store, &cfqd->cfq_slice[0], 1, UINT_MAX, 1);
STORE_FUNCTION(cfq_slice_async_rq_store, &cfqd->cfq_slice_async_rq, 1, UINT_MAX, 0);
-STORE_FUNCTION(cfq_max_depth_store, &cfqd->cfq_max_depth, 1, UINT_MAX, 0);
#undef STORE_FUNCTION
#define CFQ_ATTR(name) \
CFQ_ATTR(slice_async),
CFQ_ATTR(slice_async_rq),
CFQ_ATTR(slice_idle),
- CFQ_ATTR(max_depth),
__ATTR_NULL
};
disk_round_stats(disk);
preempt_enable();
return sprintf(page,
- "%8u %8u %8llu %8u "
- "%8u %8u %8llu %8u "
+ "%8lu %8lu %8llu %8u "
+ "%8lu %8lu %8llu %8u "
"%8u %8u %8u"
"\n",
disk_stat_read(disk, ios[READ]),
preempt_disable();
disk_round_stats(gp);
preempt_enable();
- seq_printf(s, "%4d %4d %s %u %u %llu %u %u %u %llu %u %u %u %u\n",
+ seq_printf(s, "%4d %4d %s %lu %lu %llu %u %lu %lu %llu %u %u %u %u\n",
gp->major, n + gp->first_minor, disk_name(gp, n, buf),
disk_stat_read(gp, ios[0]), disk_stat_read(gp, merges[0]),
(unsigned long long)disk_stat_read(gp, sectors[0]),
t->max_hw_segments = min(t->max_hw_segments,b->max_hw_segments);
t->max_segment_size = min(t->max_segment_size,b->max_segment_size);
t->hardsect_size = max(t->hardsect_size,b->hardsect_size);
+ if (!test_bit(QUEUE_FLAG_CLUSTER, &b->queue_flags))
+ clear_bit(QUEUE_FLAG_CLUSTER, &t->queue_flags);
}
EXPORT_SYMBOL(blk_queue_stack_limits);
__FUNCTION__, depth);
}
- tag_index = kmalloc(depth * sizeof(struct request *), GFP_ATOMIC);
+ tag_index = kzalloc(depth * sizeof(struct request *), GFP_ATOMIC);
if (!tag_index)
goto fail;
nr_ulongs = ALIGN(depth, BITS_PER_LONG) / BITS_PER_LONG;
- tag_map = kmalloc(nr_ulongs * sizeof(unsigned long), GFP_ATOMIC);
+ tag_map = kzalloc(nr_ulongs * sizeof(unsigned long), GFP_ATOMIC);
if (!tag_map)
goto fail;
- memset(tag_index, 0, depth * sizeof(struct request *));
- memset(tag_map, 0, nr_ulongs * sizeof(unsigned long));
tags->real_max_depth = depth;
tags->max_depth = depth;
tags->tag_index = tag_index;
rq->rq_disk = bd_disk;
rq->flags |= REQ_NOMERGE;
rq->end_io = done;
- elv_add_request(q, rq, where, 1);
- generic_unplug_device(q);
+ WARN_ON(irqs_disabled());
+ spin_lock_irq(q->queue_lock);
+ __elv_add_request(q, rq, where, 1);
+ __generic_unplug_device(q);
+ spin_unlock_irq(q->queue_lock);
}
-
EXPORT_SYMBOL_GPL(blk_execute_rq_nowait);
/**
iocontext_cachep = kmem_cache_create("blkdev_ioc",
sizeof(struct io_context), 0, SLAB_PANIC, NULL, NULL);
- for_each_cpu(i)
+ for_each_possible_cpu(i)
INIT_LIST_HEAD(&per_cpu(blk_cpu_done, i));
open_softirq(BLOCK_SOFTIRQ, blk_done_softirq, NULL);
BUG_ON(atomic_read(&ioc->refcount) == 0);
if (atomic_dec_and_test(&ioc->refcount)) {
+ struct cfq_io_context *cic;
+
rcu_read_lock();
if (ioc->aic && ioc->aic->dtor)
ioc->aic->dtor(ioc->aic);
- if (ioc->cic && ioc->cic->dtor)
- ioc->cic->dtor(ioc->cic);
+ if (ioc->cic_root.rb_node != NULL) {
+ struct rb_node *n = rb_first(&ioc->cic_root);
+
+ cic = rb_entry(n, struct cfq_io_context, rb_node);
+ cic->dtor(ioc);
+ }
rcu_read_unlock();
kmem_cache_free(iocontext_cachep, ioc);
{
unsigned long flags;
struct io_context *ioc;
+ struct cfq_io_context *cic;
local_irq_save(flags);
task_lock(current);
if (ioc->aic && ioc->aic->exit)
ioc->aic->exit(ioc->aic);
- if (ioc->cic && ioc->cic->exit)
- ioc->cic->exit(ioc->cic);
-
+ if (ioc->cic_root.rb_node != NULL) {
+ cic = rb_entry(rb_first(&ioc->cic_root), struct cfq_io_context, rb_node);
+ cic->exit(ioc);
+ }
+
put_io_context(ioc);
}
ret->last_waited = jiffies; /* doesn't matter... */
ret->nr_batch_requests = 0; /* because this is 0 */
ret->aic = NULL;
- ret->cic = NULL;
+ ret->cic_root.rb_node = NULL;
tsk->io_context = ret;
}
source "drivers/edac/Kconfig"
+source "drivers/rtc/Kconfig"
+
endmenu
obj-$(CONFIG_GAMEPORT) += input/gameport/
obj-$(CONFIG_INPUT) += input/
obj-$(CONFIG_I2O) += message/
+obj-$(CONFIG_RTC_LIB) += rtc/
obj-$(CONFIG_I2C) += i2c/
obj-$(CONFIG_W1) += w1/
obj-$(CONFIG_HWMON) += hwmon/
"(itf %d): No suitable DMA available.\n", lanai->number);
return -EBUSY;
}
- if (pci_set_consistent_dma_mask(pci, 0xFFFFFFFF) != 0) {
+ if (pci_set_consistent_dma_mask(pci, DMA_32BIT_MASK) != 0) {
printk(KERN_WARNING DEV_LABEL
"(itf %d): No suitable DMA available.\n", lanai->number);
return -EBUSY;
.uevent = memory_uevent,
};
-static struct notifier_block *memory_chain;
+static BLOCKING_NOTIFIER_HEAD(memory_chain);
int register_memory_notifier(struct notifier_block *nb)
{
- return notifier_chain_register(&memory_chain, nb);
+ return blocking_notifier_chain_register(&memory_chain, nb);
}
void unregister_memory_notifier(struct notifier_block *nb)
{
- notifier_chain_unregister(&memory_chain, nb);
+ blocking_notifier_chain_unregister(&memory_chain, nb);
}
/*
static inline int memory_notify(unsigned long val, void *v)
{
- return notifier_call_chain(&memory_chain, val, v);
+ return blocking_notifier_call_chain(&memory_chain, val, v);
}
/*
#include <linux/timer.h>
#include <linux/pci.h>
#include <linux/init.h>
+#include <linux/jiffies.h>
#include <linux/random.h>
#include <asm/io.h>
#include <asm/uaccess.h>
CommandsRemaining = CommandAllocationGroupSize;
CommandGroupByteCount =
CommandsRemaining * CommandAllocationLength;
- AllocationPointer = kmalloc(CommandGroupByteCount, GFP_ATOMIC);
+ AllocationPointer = kzalloc(CommandGroupByteCount, GFP_ATOMIC);
if (AllocationPointer == NULL)
return DAC960_Failure(Controller,
"AUXILIARY STRUCTURE CREATION");
- memset(AllocationPointer, 0, CommandGroupByteCount);
}
Command = (DAC960_Command_T *) AllocationPointer;
AllocationPointer += CommandAllocationLength;
void __iomem *BaseAddress;
int i;
- Controller = (DAC960_Controller_T *)
- kmalloc(sizeof(DAC960_Controller_T), GFP_ATOMIC);
+ Controller = kzalloc(sizeof(DAC960_Controller_T), GFP_ATOMIC);
if (Controller == NULL) {
DAC960_Error("Unable to allocate Controller structure for "
"Controller at\n", NULL);
return NULL;
}
- memset(Controller, 0, sizeof(DAC960_Controller_T));
Controller->ControllerNumber = DAC960_ControllerCount;
DAC960_Controllers[DAC960_ControllerCount++] = Controller;
Controller->Bus = PCI_Device->bus->number;
(NewEnquiry->EventLogSequenceNumber !=
OldEnquiry->EventLogSequenceNumber) ||
Controller->MonitoringTimerCount == 0 ||
- (jiffies - Controller->SecondaryMonitoringTime
- >= DAC960_SecondaryMonitoringInterval))
+ time_after_eq(jiffies, Controller->SecondaryMonitoringTime
+ + DAC960_SecondaryMonitoringInterval))
{
Controller->V1.NeedLogicalDriveInformation = true;
Controller->V1.NewEventLogSequenceNumber =
unsigned int StatusChangeCounter =
Controller->V2.HealthStatusBuffer->StatusChangeCounter;
boolean ForceMonitoringCommand = false;
- if (jiffies - Controller->SecondaryMonitoringTime
- > DAC960_SecondaryMonitoringInterval)
+ if (time_after(jiffies, Controller->SecondaryMonitoringTime
+ + DAC960_SecondaryMonitoringInterval))
{
int LogicalDriveNumber;
for (LogicalDriveNumber = 0;
ControllerInfo->ConsistencyChecksActive +
ControllerInfo->RebuildsActive +
ControllerInfo->OnlineExpansionsActive == 0 ||
- jiffies - Controller->PrimaryMonitoringTime
- < DAC960_MonitoringTimerInterval) &&
+ time_before(jiffies, Controller->PrimaryMonitoringTime
+ + DAC960_MonitoringTimerInterval)) &&
!ForceMonitoringCommand)
{
Controller->MonitoringTimer.expires =
Controller->ProgressBufferLength = Length;
if (Controller->EphemeralProgressMessage)
{
- if (jiffies - Controller->LastProgressReportTime
- >= DAC960_ProgressReportingInterval)
+ if (time_after_eq(jiffies, Controller->LastProgressReportTime
+ + DAC960_ProgressReportingInterval))
{
printk("%sDAC960#%d: %s", DAC960_MessageLevelMap[MessageLevel],
Controller->ControllerNumber, Buffer);
thus say N here.
config BLK_DEV_RAM_COUNT
- int "Default number of RAM disks" if BLK_DEV_RAM
+ int "Default number of RAM disks"
default "16"
+ depends on BLK_DEV_RAM
help
The default value is 16 RAM disks. Change this if you know what
are doing. If you boot from a filesystem that needs to be extracted
int length;
int end;
- if (count < 0)
- return( -EINVAL );
if (!(page = __get_free_page( GFP_KERNEL )))
return( -ENOMEM );
status = -EINVAL;
goto cleanup1;
}
- buff = (unsigned char **) kmalloc(MAXSGENTRIES *
- sizeof(char *), GFP_KERNEL);
+ buff = kzalloc(MAXSGENTRIES * sizeof(char *), GFP_KERNEL);
if (!buff) {
status = -ENOMEM;
goto cleanup1;
}
- memset(buff, 0, MAXSGENTRIES);
buff_size = (int *) kmalloc(MAXSGENTRIES * sizeof(int),
GFP_KERNEL);
if (!buff_size) {
return;
}
}
+default_int_mode:
#endif /* CONFIG_PCI_MSI */
/* if we get here we're going to use the default interrupt mode */
-default_int_mode:
c->intr[SIMPLE_MODE_INT] = pdev->irq;
return;
}
int block_size;
int total_size;
- ld_buff = kmalloc(sizeof(ReportLunData_struct), GFP_KERNEL);
+ ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL);
if (ld_buff == NULL)
{
printk(KERN_ERR "cciss: out of memory\n");
return;
}
- memset(ld_buff, 0, sizeof(ReportLunData_struct));
size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL);
if (size_buff == NULL)
{
for(i=0; i< MAX_CTLR; i++) {
if (!hba[i]) {
ctlr_info_t *p;
- p = kmalloc(sizeof(ctlr_info_t), GFP_KERNEL);
+ p = kzalloc(sizeof(ctlr_info_t), GFP_KERNEL);
if (!p)
goto Enomem;
- memset(p, 0, sizeof(ctlr_info_t));
for (n = 0; n < NWD; n++)
p->gendisk[n] = disk[n];
hba[i] = p;
int i;
c = (ctlr_info_t *) hba[cntl_num];
- ld_buff = kmalloc(reportlunsize, GFP_KERNEL);
+ ld_buff = kzalloc(reportlunsize, GFP_KERNEL);
if (ld_buff == NULL) {
printk(KERN_ERR "cciss: out of memory\n");
return;
}
- memset(ld_buff, 0, reportlunsize);
inq_buff = kmalloc(OBDR_TAPE_INQ_SIZE, GFP_KERNEL);
if (inq_buff == NULL) {
printk(KERN_ERR "cciss: out of memory\n");
#include <linux/mm.h>
#include <linux/bio.h>
#include <linux/string.h>
+#include <linux/jiffies.h>
#include <linux/fcntl.h>
#include <linux/delay.h>
#include <linux/mc146818rtc.h> /* CMOS defines */
{
int fdc = FDC(drive);
#ifdef FLOPPY_SANITY_CHECK
- if (jiffies - UDRS->select_date < UDP->select_delay)
+ if (time_before(jiffies, UDRS->select_date + UDP->select_delay))
DPRINT("WARNING disk change called early\n");
if (!(FDCS->dor & (0x10 << UNIT(drive))) ||
(FDCS->dor & 3) != UNIT(drive) || fdc != FDC(drive)) {
return 1;
}
- if ((signed)(jiffies - delay) < 0) {
+ if (time_before(jiffies, delay)) {
del_timer(&fd_timer);
fd_timer.function = function;
fd_timer.expires = delay;
* again just before spinup completion. Beware that
* after scandrives, we must again wait for selection.
*/
- if ((signed)(ready_date - jiffies) > DP->select_delay) {
+ if (time_after(ready_date, jiffies + DP->select_delay)) {
ready_date -= DP->select_delay;
function = (timeout_fn) floppy_start;
} else
if (UTESTF(FD_DISK_CHANGED) || UTESTF(FD_VERIFY))
return 1;
- if (UDP->checkfreq < (int)(jiffies - UDRS->last_checked)) {
+ if (time_after(jiffies, UDRS->last_checked + UDP->checkfreq)) {
if (floppy_grab_irq_and_dma()) {
return 1;
}
static int bpck6_init_proto(PIA *pi)
{
- Interface *p = kmalloc(sizeof(Interface), GFP_KERNEL);
+ Interface *p = kzalloc(sizeof(Interface), GFP_KERNEL);
if (p) {
- memset(p, 0, sizeof(Interface));
pi->private = (unsigned long)p;
return 0;
}
#include <linux/cdrom.h> /* for the eject ioctl */
#include <linux/blkdev.h>
#include <linux/blkpg.h>
+#include <linux/kernel.h>
#include <asm/uaccess.h>
#include <linux/sched.h>
#include <linux/workqueue.h>
int i;
printk("%s: %s: status = 0x%x =", disk->name, msg, status);
- for (i = 0; i < 18; i++)
+ for (i = 0; i < ARRAY_SIZE(pd_errs); i++)
if (status & (1 << i))
printk(" %s", pd_errs[i]);
printk("\n");
static int __init pg_init(void)
{
- int unit, err = 0;
+ int unit;
+ int err;
if (disable){
err = -1;
goto out;
}
- if (register_chrdev(major, name, &pg_fops)) {
+ err = register_chrdev(major, name, &pg_fops);
+ if (err < 0) {
printk("pg_init: unable to get major number %d\n", major);
for (unit = 0; unit < PG_UNITS; unit++) {
struct pg *dev = &devices[unit];
if (dev->present)
pi_release(dev->pi);
}
- err = -1;
goto out;
}
+ major = err; /* In case the user specified `major=0' (dynamic) */
pg_class = class_create(THIS_MODULE, "pg");
if (IS_ERR(pg_class)) {
err = PTR_ERR(pg_class);
static int __init pt_init(void)
{
- int unit, err = 0;
+ int unit;
+ int err;
if (disable) {
err = -1;
goto out;
}
- if (register_chrdev(major, name, &pt_fops)) {
+ err = register_chrdev(major, name, &pt_fops);
+ if (err < 0) {
printk("pt_init: unable to get major number %d\n", major);
for (unit = 0; unit < PT_UNITS; unit++)
if (pt[unit].present)
pi_release(pt[unit].pi);
- err = -1;
goto out;
}
+ major = err;
pt_class = class_create(THIS_MODULE, "pt");
if (IS_ERR(pt_class)) {
err = PTR_ERR(pt_class);
#include <linux/timer.h>
#include <linux/pci.h>
#include <linux/slab.h>
+#include <linux/dma-mapping.h>
#include <linux/fcntl.h> /* O_ACCMODE */
#include <linux/hdreg.h> /* HDIO_GETGEO */
printk(KERN_INFO "Micro Memory(tm) controller #%d found at %02x:%02x (PCI Mem Module (Battery Backup))\n",
card->card_number, dev->bus->number, dev->devfn);
- if (pci_set_dma_mask(dev, 0xffffffffffffffffLL) &&
- pci_set_dma_mask(dev, 0xffffffffLL)) {
+ if (pci_set_dma_mask(dev, DMA_64BIT_MASK) &&
+ pci_set_dma_mask(dev, DMA_32BIT_MASK)) {
printk(KERN_WARNING "MM%d: NO suitable DMA found\n",num_cards);
return -ENOMEM;
}
config RTC
tristate "Enhanced Real Time Clock Support"
- depends on !PPC && !PARISC && !IA64 && !M68K && (!SPARC || PCI) && !FRV
+ depends on !PPC && !PARISC && !IA64 && !M68K && (!SPARC || PCI) && !FRV && !ARM
---help---
If you say Y here and create a character special file /dev/rtc with
major number 10 and minor number 135 using mknod ("man mknod"), you
#include <linux/gfp.h>
#include <linux/page-flags.h>
#include <linux/mm.h>
+#include <linux/jiffies.h>
#include "agp.h"
/* NVIDIA registers */
do {
pci_read_config_dword(nvidia_private.dev_1,
NVIDIA_1_WBC, &wbc_reg);
- if ((signed)(end - jiffies) <= 0) {
+ if (time_before_eq(end, jiffies)) {
printk(KERN_ERR PFX
"TLB flush took more than 3 seconds.\n");
}
drm_device_t *dev = NULL;
int minor = iminor(inode);
int err = -ENODEV;
- struct file_operations *old_fops;
+ const struct file_operations *old_fops;
DRM_DEBUG("\n");
drm_device_t *dev = priv->head->dev;
drm_i810_buf_priv_t *buf_priv = buf->dev_private;
drm_i810_private_t *dev_priv = dev->dev_private;
- struct file_operations *old_fops;
+ const struct file_operations *old_fops;
int retcode = 0;
if (buf_priv->currently_mapped == I810_BUF_MAPPED)
drm_device_t *dev = priv->head->dev;
drm_i830_buf_priv_t *buf_priv = buf->dev_private;
drm_i830_private_t *dev_priv = dev->dev_private;
- struct file_operations *old_fops;
+ const struct file_operations *old_fops;
unsigned long virtual;
int retcode = 0;
ipmi_timer.expires = jiffies + IPMI_TIMEOUT_JIFFIES;
add_timer(&ipmi_timer);
- notifier_chain_register(&panic_notifier_list, &panic_block);
+ atomic_notifier_chain_register(&panic_notifier_list, &panic_block);
initialized = 1;
if (!initialized)
return;
- notifier_chain_unregister(&panic_notifier_list, &panic_block);
+ atomic_notifier_chain_unregister(&panic_notifier_list, &panic_block);
/* This can't be called if any interfaces exist, so no worry about
shutting down the interfaces. */
static int try_smi_init(struct smi_info *smi);
-static struct notifier_block *xaction_notifier_list;
+static ATOMIC_NOTIFIER_HEAD(xaction_notifier_list);
static int register_xaction_notifier(struct notifier_block * nb)
{
- return notifier_chain_register(&xaction_notifier_list, nb);
+ return atomic_notifier_chain_register(&xaction_notifier_list, nb);
}
static void si_restart_short_timer(struct smi_info *smi_info);
do_gettimeofday(&t);
printk("**Start2: %d.%9.9d\n", t.tv_sec, t.tv_usec);
#endif
- err = notifier_call_chain(&xaction_notifier_list, 0, smi_info);
+ err = atomic_notifier_call_chain(&xaction_notifier_list,
+ 0, smi_info);
if (err & NOTIFY_STOP_MASK) {
rv = SI_SM_CALL_WITHOUT_DELAY;
goto out;
}
register_reboot_notifier(&wdog_reboot_notifier);
- notifier_chain_register(&panic_notifier_list, &wdog_panic_notifier);
+ atomic_notifier_chain_register(&panic_notifier_list,
+ &wdog_panic_notifier);
printk(KERN_INFO PFX "driver initialized\n");
release_nmi(&ipmi_nmi_handler);
#endif
- notifier_chain_unregister(&panic_notifier_list, &wdog_panic_notifier);
+ atomic_notifier_chain_unregister(&panic_notifier_list,
+ &wdog_panic_notifier);
unregister_reboot_notifier(&wdog_reboot_notifier);
if (! watchdog_user)
unsigned int minor;
char *name;
umode_t mode;
- struct file_operations *fops;
+ const struct file_operations *fops;
} devlist[] = { /* list of minor devices */
{1, "mem", S_IRUSR | S_IWUSR | S_IRGRP, &mem_fops},
{2, "kmem", S_IRUSR | S_IWUSR | S_IRGRP, &kmem_fops},
int minor = iminor(inode);
struct miscdevice *c;
int err = -ENODEV;
- struct file_operations *old_fops, *new_fops = NULL;
+ const struct file_operations *old_fops, *new_fops = NULL;
down(&misc_sem);
// enable CTS interrupt
#define MOXA_MUST_IER_ECTSI 0x80
-// eanble RTS interrupt
+// enable RTS interrupt
#define MOXA_MUST_IER_ERTSI 0x40
// enable Xon/Xoff interrupt
#define MOXA_MUST_IER_XINT 0x20
return mgsl_get_text_ptr;
}
-/*
- * tmp_buf is used as a temporary buffer by mgsl_write. We need to
- * lock it in case the COPY_FROM_USER blocks while swapping in a page,
- * and some other program tries to do a serial write at the same time.
- * Since the lock will only come under contention when the system is
- * swapping and available memory is low, it makes sense to share one
- * buffer across all the serial ioports, since it significantly saves
- * memory if large numbers of serial ports are open.
- */
-static unsigned char *tmp_buf;
-
static inline int mgsl_paranoia_check(struct mgsl_struct *info,
char *name, const char *routine)
{
if (mgsl_paranoia_check(info, tty->name, "mgsl_write"))
goto cleanup;
- if (!tty || !info->xmit_buf || !tmp_buf)
+ if (!tty || !info->xmit_buf)
goto cleanup;
if ( info->params.mode == MGSL_MODE_HDLC ||
{
struct mgsl_struct *info;
int retval, line;
- unsigned long page;
unsigned long flags;
/* verify range of specified line number */
goto cleanup;
}
- if (!tmp_buf) {
- page = get_zeroed_page(GFP_KERNEL);
- if (!page) {
- retval = -ENOMEM;
- goto cleanup;
- }
- if (tmp_buf)
- free_page(page);
- else
- tmp_buf = (unsigned char *) page;
- }
-
info->tty->low_latency = (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
spin_lock_irqsave(&info->netlock, flags);
kfree(tmp);
}
- if (tmp_buf) {
- free_page((unsigned long) tmp_buf);
- tmp_buf = NULL;
- }
-
if (pci_registered)
pci_unregister_driver(&synclink_pci_driver);
}
* <15..8> ? RxFIFO IRQ Request Level
*
* Note: For async mode the receive FIFO level must be set
- * to 0 to aviod the situation where the FIFO contains fewer bytes
+ * to 0 to avoid the situation where the FIFO contains fewer bytes
* than the trigger level and no more data is expected.
*
* <7> 0 Exited Hunt IA (Interrupt Arm)
/*
- * $Id: synclink_gt.c,v 4.22 2006/01/09 20:16:06 paulkf Exp $
+ * $Id: synclink_gt.c,v 4.25 2006/02/06 21:20:33 paulkf Exp $
*
* Device driver for Microgate SyncLink GT serial adapters.
*
* module identification
*/
static char *driver_name = "SyncLink GT";
-static char *driver_version = "$Revision: 4.22 $";
+static char *driver_version = "$Revision: 4.25 $";
static char *tty_driver_name = "synclink_gt";
static char *tty_dev_prefix = "ttySLG";
MODULE_LICENSE("GPL");
#define SLGT_REG_SIZE 256
/*
+ * conditional wait facility
+ */
+struct cond_wait {
+ struct cond_wait *next;
+ wait_queue_head_t q;
+ wait_queue_t wait;
+ unsigned int data;
+};
+static void init_cond_wait(struct cond_wait *w, unsigned int data);
+static void add_cond_wait(struct cond_wait **head, struct cond_wait *w);
+static void remove_cond_wait(struct cond_wait **head, struct cond_wait *w);
+static void flush_cond_wait(struct cond_wait **head);
+
+/*
* DMA buffer descriptor and access macros
*/
struct slgt_desc
struct timer_list tx_timer;
struct timer_list rx_timer;
+ unsigned int gpio_present;
+ struct cond_wait *gpio_wait_q;
+
spinlock_t lock; /* spinlock for synchronizing with ISR */
struct work_struct task;
#define MASK_OVERRUN BIT4
#define GSR 0x00 /* global status */
+#define JCR 0x04 /* JTAG control */
+#define IODR 0x08 /* GPIO direction */
+#define IOER 0x0c /* GPIO interrupt enable */
+#define IOVR 0x10 /* GPIO value */
+#define IOSR 0x14 /* GPIO interrupt status */
#define TDR 0x80 /* tx data */
#define RDR 0x80 /* rx data */
#define TCR 0x82 /* tx control */
static void set_break(struct tty_struct *tty, int break_state);
static int get_interface(struct slgt_info *info, int __user *if_mode);
static int set_interface(struct slgt_info *info, int if_mode);
+static int set_gpio(struct slgt_info *info, struct gpio_desc __user *gpio);
+static int get_gpio(struct slgt_info *info, struct gpio_desc __user *gpio);
+static int wait_gpio(struct slgt_info *info, struct gpio_desc __user *gpio);
/*
* driver functions
return get_interface(info, argp);
case MGSL_IOCSIF:
return set_interface(info,(int)arg);
+ case MGSL_IOCSGPIO:
+ return set_gpio(info, argp);
+ case MGSL_IOCGGPIO:
+ return get_gpio(info, argp);
+ case MGSL_IOCWAITGPIO:
+ return wait_gpio(info, argp);
case TIOCGICOUNT:
spin_lock_irqsave(&info->lock,flags);
cnow = info->icount;
DBGDATA(info, p, count, "rx");
for(i=0 ; i < count; i+=2, p+=2) {
- if (tty && chars) {
- tty_flip_buffer_push(tty);
- chars = 0;
- }
ch = *p;
icount->rx++;
}
}
+static void isr_gpio(struct slgt_info *info, unsigned int changed, unsigned int state)
+{
+ struct cond_wait *w, *prev;
+
+ /* wake processes waiting for specific transitions */
+ for (w = info->gpio_wait_q, prev = NULL ; w != NULL ; w = w->next) {
+ if (w->data & changed) {
+ w->data = state;
+ wake_up_interruptible(&w->q);
+ if (prev != NULL)
+ prev->next = w->next;
+ else
+ info->gpio_wait_q = w->next;
+ } else
+ prev = w;
+ }
+}
+
/* interrupt service routine
*
* irq interrupt number
}
}
+ if (info->gpio_present) {
+ unsigned int state;
+ unsigned int changed;
+ while ((changed = rd_reg32(info, IOSR)) != 0) {
+ DBGISR(("%s iosr=%08x\n", info->device_name, changed));
+ /* read latched state of GPIO signals */
+ state = rd_reg32(info, IOVR);
+ /* clear pending GPIO interrupt bits */
+ wr_reg32(info, IOSR, changed);
+ for (i=0 ; i < info->port_count ; i++) {
+ if (info->port_array[i] != NULL)
+ isr_gpio(info->port_array[i], changed, state);
+ }
+ }
+ }
+
for(i=0; i < info->port_count ; i++) {
struct slgt_info *port = info->port_array[i];
set_signals(info);
}
+ flush_cond_wait(&info->gpio_wait_q);
+
spin_unlock_irqrestore(&info->lock,flags);
if (info->tty)
return 0;
}
+/*
+ * set general purpose IO pin state and direction
+ *
+ * user_gpio fields:
+ * state each bit indicates a pin state
+ * smask set bit indicates pin state to set
+ * dir each bit indicates a pin direction (0=input, 1=output)
+ * dmask set bit indicates pin direction to set
+ */
+static int set_gpio(struct slgt_info *info, struct gpio_desc __user *user_gpio)
+{
+ unsigned long flags;
+ struct gpio_desc gpio;
+ __u32 data;
+
+ if (!info->gpio_present)
+ return -EINVAL;
+ if (copy_from_user(&gpio, user_gpio, sizeof(gpio)))
+ return -EFAULT;
+ DBGINFO(("%s set_gpio state=%08x smask=%08x dir=%08x dmask=%08x\n",
+ info->device_name, gpio.state, gpio.smask,
+ gpio.dir, gpio.dmask));
+
+ spin_lock_irqsave(&info->lock,flags);
+ if (gpio.dmask) {
+ data = rd_reg32(info, IODR);
+ data |= gpio.dmask & gpio.dir;
+ data &= ~(gpio.dmask & ~gpio.dir);
+ wr_reg32(info, IODR, data);
+ }
+ if (gpio.smask) {
+ data = rd_reg32(info, IOVR);
+ data |= gpio.smask & gpio.state;
+ data &= ~(gpio.smask & ~gpio.state);
+ wr_reg32(info, IOVR, data);
+ }
+ spin_unlock_irqrestore(&info->lock,flags);
+
+ return 0;
+}
+
+/*
+ * get general purpose IO pin state and direction
+ */
+static int get_gpio(struct slgt_info *info, struct gpio_desc __user *user_gpio)
+{
+ struct gpio_desc gpio;
+ if (!info->gpio_present)
+ return -EINVAL;
+ gpio.state = rd_reg32(info, IOVR);
+ gpio.smask = 0xffffffff;
+ gpio.dir = rd_reg32(info, IODR);
+ gpio.dmask = 0xffffffff;
+ if (copy_to_user(user_gpio, &gpio, sizeof(gpio)))
+ return -EFAULT;
+ DBGINFO(("%s get_gpio state=%08x dir=%08x\n",
+ info->device_name, gpio.state, gpio.dir));
+ return 0;
+}
+
+/*
+ * conditional wait facility
+ */
+static void init_cond_wait(struct cond_wait *w, unsigned int data)
+{
+ init_waitqueue_head(&w->q);
+ init_waitqueue_entry(&w->wait, current);
+ w->data = data;
+}
+
+static void add_cond_wait(struct cond_wait **head, struct cond_wait *w)
+{
+ set_current_state(TASK_INTERRUPTIBLE);
+ add_wait_queue(&w->q, &w->wait);
+ w->next = *head;
+ *head = w;
+}
+
+static void remove_cond_wait(struct cond_wait **head, struct cond_wait *cw)
+{
+ struct cond_wait *w, *prev;
+ remove_wait_queue(&cw->q, &cw->wait);
+ set_current_state(TASK_RUNNING);
+ for (w = *head, prev = NULL ; w != NULL ; prev = w, w = w->next) {
+ if (w == cw) {
+ if (prev != NULL)
+ prev->next = w->next;
+ else
+ *head = w->next;
+ break;
+ }
+ }
+}
+
+static void flush_cond_wait(struct cond_wait **head)
+{
+ while (*head != NULL) {
+ wake_up_interruptible(&(*head)->q);
+ *head = (*head)->next;
+ }
+}
+
+/*
+ * wait for general purpose I/O pin(s) to enter specified state
+ *
+ * user_gpio fields:
+ * state - bit indicates target pin state
+ * smask - set bit indicates watched pin
+ *
+ * The wait ends when at least one watched pin enters the specified
+ * state. When 0 (no error) is returned, user_gpio->state is set to the
+ * state of all GPIO pins when the wait ends.
+ *
+ * Note: Each pin may be a dedicated input, dedicated output, or
+ * configurable input/output. The number and configuration of pins
+ * varies with the specific adapter model. Only input pins (dedicated
+ * or configured) can be monitored with this function.
+ */
+static int wait_gpio(struct slgt_info *info, struct gpio_desc __user *user_gpio)
+{
+ unsigned long flags;
+ int rc = 0;
+ struct gpio_desc gpio;
+ struct cond_wait wait;
+ u32 state;
+
+ if (!info->gpio_present)
+ return -EINVAL;
+ if (copy_from_user(&gpio, user_gpio, sizeof(gpio)))
+ return -EFAULT;
+ DBGINFO(("%s wait_gpio() state=%08x smask=%08x\n",
+ info->device_name, gpio.state, gpio.smask));
+ /* ignore output pins identified by set IODR bit */
+ if ((gpio.smask &= ~rd_reg32(info, IODR)) == 0)
+ return -EINVAL;
+ init_cond_wait(&wait, gpio.smask);
+
+ spin_lock_irqsave(&info->lock, flags);
+ /* enable interrupts for watched pins */
+ wr_reg32(info, IOER, rd_reg32(info, IOER) | gpio.smask);
+ /* get current pin states */
+ state = rd_reg32(info, IOVR);
+
+ if (gpio.smask & ~(state ^ gpio.state)) {
+ /* already in target state */
+ gpio.state = state;
+ } else {
+ /* wait for target state */
+ add_cond_wait(&info->gpio_wait_q, &wait);
+ spin_unlock_irqrestore(&info->lock, flags);
+ schedule();
+ if (signal_pending(current))
+ rc = -ERESTARTSYS;
+ else
+ gpio.state = wait.data;
+ spin_lock_irqsave(&info->lock, flags);
+ remove_cond_wait(&info->gpio_wait_q, &wait);
+ }
+
+ /* disable all GPIO interrupts if no waiting processes */
+ if (info->gpio_wait_q == NULL)
+ wr_reg32(info, IOER, 0);
+ spin_unlock_irqrestore(&info->lock,flags);
+
+ if ((rc == 0) && copy_to_user(user_gpio, &gpio, sizeof(gpio)))
+ rc = -EFAULT;
+ return rc;
+}
+
static int modem_input_wait(struct slgt_info *info,int arg)
{
unsigned long flags;
} else {
port_array[0]->irq_requested = 1;
adapter_test(port_array[0]);
- for (i=1 ; i < port_count ; i++)
+ for (i=1 ; i < port_count ; i++) {
port_array[i]->init_error = port_array[0]->init_error;
+ port_array[i]->gpio_present = port_array[0]->gpio_present;
+ }
}
}
}
break;
}
}
-
+ info->gpio_present = (rd_reg32(info, JCR) & BIT5) ? 1 : 0;
info->init_error = rc ? 0 : DiagStatus_AddressFailure;
return rc;
}
* changes to devices when the CPU clock speed changes.
* The mutex locks both lists.
*/
-static struct notifier_block *cpufreq_policy_notifier_list;
-static struct notifier_block *cpufreq_transition_notifier_list;
-static DECLARE_RWSEM (cpufreq_notifier_rwsem);
+static BLOCKING_NOTIFIER_HEAD(cpufreq_policy_notifier_list);
+static BLOCKING_NOTIFIER_HEAD(cpufreq_transition_notifier_list);
static LIST_HEAD(cpufreq_governor_list);
dprintk("notification %u of frequency transition to %u kHz\n",
state, freqs->new);
- down_read(&cpufreq_notifier_rwsem);
-
policy = cpufreq_cpu_data[freqs->cpu];
switch (state) {
freqs->old = policy->cur;
}
}
- notifier_call_chain(&cpufreq_transition_notifier_list,
- CPUFREQ_PRECHANGE, freqs);
+ blocking_notifier_call_chain(&cpufreq_transition_notifier_list,
+ CPUFREQ_PRECHANGE, freqs);
adjust_jiffies(CPUFREQ_PRECHANGE, freqs);
break;
case CPUFREQ_POSTCHANGE:
adjust_jiffies(CPUFREQ_POSTCHANGE, freqs);
- notifier_call_chain(&cpufreq_transition_notifier_list,
- CPUFREQ_POSTCHANGE, freqs);
+ blocking_notifier_call_chain(&cpufreq_transition_notifier_list,
+ CPUFREQ_POSTCHANGE, freqs);
if (likely(policy) && likely(policy->cpu == freqs->cpu))
policy->cur = freqs->new;
break;
}
- up_read(&cpufreq_notifier_rwsem);
}
EXPORT_SYMBOL_GPL(cpufreq_notify_transition);
freqs.old = cpu_policy->cur;
freqs.new = cur_freq;
- notifier_call_chain(&cpufreq_transition_notifier_list,
+ blocking_notifier_call_chain(&cpufreq_transition_notifier_list,
CPUFREQ_SUSPENDCHANGE, &freqs);
adjust_jiffies(CPUFREQ_SUSPENDCHANGE, &freqs);
freqs.old = cpu_policy->cur;
freqs.new = cur_freq;
- notifier_call_chain(&cpufreq_transition_notifier_list,
+ blocking_notifier_call_chain(
+ &cpufreq_transition_notifier_list,
CPUFREQ_RESUMECHANGE, &freqs);
adjust_jiffies(CPUFREQ_RESUMECHANGE, &freqs);
* changes in cpufreq policy.
*
* This function may sleep, and has the same return conditions as
- * notifier_chain_register.
+ * blocking_notifier_chain_register.
*/
int cpufreq_register_notifier(struct notifier_block *nb, unsigned int list)
{
int ret;
- down_write(&cpufreq_notifier_rwsem);
switch (list) {
case CPUFREQ_TRANSITION_NOTIFIER:
- ret = notifier_chain_register(&cpufreq_transition_notifier_list, nb);
+ ret = blocking_notifier_chain_register(
+ &cpufreq_transition_notifier_list, nb);
break;
case CPUFREQ_POLICY_NOTIFIER:
- ret = notifier_chain_register(&cpufreq_policy_notifier_list, nb);
+ ret = blocking_notifier_chain_register(
+ &cpufreq_policy_notifier_list, nb);
break;
default:
ret = -EINVAL;
}
- up_write(&cpufreq_notifier_rwsem);
return ret;
}
* Remove a driver from the CPU frequency notifier list.
*
* This function may sleep, and has the same return conditions as
- * notifier_chain_unregister.
+ * blocking_notifier_chain_unregister.
*/
int cpufreq_unregister_notifier(struct notifier_block *nb, unsigned int list)
{
int ret;
- down_write(&cpufreq_notifier_rwsem);
switch (list) {
case CPUFREQ_TRANSITION_NOTIFIER:
- ret = notifier_chain_unregister(&cpufreq_transition_notifier_list, nb);
+ ret = blocking_notifier_chain_unregister(
+ &cpufreq_transition_notifier_list, nb);
break;
case CPUFREQ_POLICY_NOTIFIER:
- ret = notifier_chain_unregister(&cpufreq_policy_notifier_list, nb);
+ ret = blocking_notifier_chain_unregister(
+ &cpufreq_policy_notifier_list, nb);
break;
default:
ret = -EINVAL;
}
- up_write(&cpufreq_notifier_rwsem);
return ret;
}
if (ret)
goto error_out;
- down_read(&cpufreq_notifier_rwsem);
-
/* adjust if necessary - all reasons */
- notifier_call_chain(&cpufreq_policy_notifier_list, CPUFREQ_ADJUST,
- policy);
+ blocking_notifier_call_chain(&cpufreq_policy_notifier_list,
+ CPUFREQ_ADJUST, policy);
/* adjust if necessary - hardware incompatibility*/
- notifier_call_chain(&cpufreq_policy_notifier_list, CPUFREQ_INCOMPATIBLE,
- policy);
+ blocking_notifier_call_chain(&cpufreq_policy_notifier_list,
+ CPUFREQ_INCOMPATIBLE, policy);
/* verify the cpu speed can be set within this limit,
which might be different to the first one */
ret = cpufreq_driver->verify(policy);
- if (ret) {
- up_read(&cpufreq_notifier_rwsem);
+ if (ret)
goto error_out;
- }
/* notification of the new policy */
- notifier_call_chain(&cpufreq_policy_notifier_list, CPUFREQ_NOTIFY,
- policy);
-
- up_read(&cpufreq_notifier_rwsem);
+ blocking_notifier_call_chain(&cpufreq_policy_notifier_list,
+ CPUFREQ_NOTIFY, policy);
data->min = policy->min;
data->max = policy->max;
*/
#define DEF_FREQUENCY_UP_THRESHOLD (80)
-#define MIN_FREQUENCY_UP_THRESHOLD (0)
-#define MAX_FREQUENCY_UP_THRESHOLD (100)
-
#define DEF_FREQUENCY_DOWN_THRESHOLD (20)
-#define MIN_FREQUENCY_DOWN_THRESHOLD (0)
-#define MAX_FREQUENCY_DOWN_THRESHOLD (100)
/*
* The polling frequency of this governor depends on the capability of
* All times here are in uS.
*/
static unsigned int def_sampling_rate;
-#define MIN_SAMPLING_RATE (def_sampling_rate / 2)
+#define MIN_SAMPLING_RATE_RATIO (2)
+/* for correct statistics, we need at least 10 ticks between each measure */
+#define MIN_STAT_SAMPLING_RATE (MIN_SAMPLING_RATE_RATIO * jiffies_to_usecs(10))
+#define MIN_SAMPLING_RATE (def_sampling_rate / MIN_SAMPLING_RATE_RATIO)
#define MAX_SAMPLING_RATE (500 * def_sampling_rate)
-#define DEF_SAMPLING_RATE_LATENCY_MULTIPLIER (100000)
-#define DEF_SAMPLING_DOWN_FACTOR (5)
+#define DEF_SAMPLING_RATE_LATENCY_MULTIPLIER (1000)
+#define DEF_SAMPLING_DOWN_FACTOR (1)
+#define MAX_SAMPLING_DOWN_FACTOR (10)
#define TRANSITION_LATENCY_LIMIT (10 * 1000)
static void do_dbs_timer(void *data);
unsigned int prev_cpu_idle_up;
unsigned int prev_cpu_idle_down;
unsigned int enable;
+ unsigned int down_skip;
+ unsigned int requested_freq;
};
static DEFINE_PER_CPU(struct cpu_dbs_info_s, cpu_dbs_info);
.up_threshold = DEF_FREQUENCY_UP_THRESHOLD,
.down_threshold = DEF_FREQUENCY_DOWN_THRESHOLD,
.sampling_down_factor = DEF_SAMPLING_DOWN_FACTOR,
+ .ignore_nice = 0,
+ .freq_step = 5,
};
static inline unsigned int get_cpu_idle_time(unsigned int cpu)
unsigned int input;
int ret;
ret = sscanf (buf, "%u", &input);
- if (ret != 1 )
+ if (ret != 1 || input > MAX_SAMPLING_DOWN_FACTOR || input < 1)
return -EINVAL;
mutex_lock(&dbs_mutex);
ret = sscanf (buf, "%u", &input);
mutex_lock(&dbs_mutex);
- if (ret != 1 || input > MAX_FREQUENCY_UP_THRESHOLD ||
- input < MIN_FREQUENCY_UP_THRESHOLD ||
+ if (ret != 1 || input > 100 || input < 0 ||
input <= dbs_tuners_ins.down_threshold) {
mutex_unlock(&dbs_mutex);
return -EINVAL;
ret = sscanf (buf, "%u", &input);
mutex_lock(&dbs_mutex);
- if (ret != 1 || input > MAX_FREQUENCY_DOWN_THRESHOLD ||
- input < MIN_FREQUENCY_DOWN_THRESHOLD ||
+ if (ret != 1 || input > 100 || input < 0 ||
input >= dbs_tuners_ins.up_threshold) {
mutex_unlock(&dbs_mutex);
return -EINVAL;
static void dbs_check_cpu(int cpu)
{
unsigned int idle_ticks, up_idle_ticks, down_idle_ticks;
+ unsigned int tmp_idle_ticks, total_idle_ticks;
unsigned int freq_step;
unsigned int freq_down_sampling_rate;
- static int down_skip[NR_CPUS];
- static int requested_freq[NR_CPUS];
- static unsigned short init_flag = 0;
- struct cpu_dbs_info_s *this_dbs_info;
- struct cpu_dbs_info_s *dbs_info;
-
+ struct cpu_dbs_info_s *this_dbs_info = &per_cpu(cpu_dbs_info, cpu);
struct cpufreq_policy *policy;
- unsigned int j;
- this_dbs_info = &per_cpu(cpu_dbs_info, cpu);
if (!this_dbs_info->enable)
return;
policy = this_dbs_info->cur_policy;
- if ( init_flag == 0 ) {
- for_each_online_cpu(j) {
- dbs_info = &per_cpu(cpu_dbs_info, j);
- requested_freq[j] = dbs_info->cur_policy->cur;
- }
- init_flag = 1;
- }
-
/*
* The default safe range is 20% to 80%
* Every sampling_rate, we check
*/
/* Check for frequency increase */
-
idle_ticks = UINT_MAX;
- for_each_cpu_mask(j, policy->cpus) {
- unsigned int tmp_idle_ticks, total_idle_ticks;
- struct cpu_dbs_info_s *j_dbs_info;
- j_dbs_info = &per_cpu(cpu_dbs_info, j);
- /* Check for frequency increase */
- total_idle_ticks = get_cpu_idle_time(j);
- tmp_idle_ticks = total_idle_ticks -
- j_dbs_info->prev_cpu_idle_up;
- j_dbs_info->prev_cpu_idle_up = total_idle_ticks;
-
- if (tmp_idle_ticks < idle_ticks)
- idle_ticks = tmp_idle_ticks;
- }
+ /* Check for frequency increase */
+ total_idle_ticks = get_cpu_idle_time(cpu);
+ tmp_idle_ticks = total_idle_ticks -
+ this_dbs_info->prev_cpu_idle_up;
+ this_dbs_info->prev_cpu_idle_up = total_idle_ticks;
+
+ if (tmp_idle_ticks < idle_ticks)
+ idle_ticks = tmp_idle_ticks;
/* Scale idle ticks by 100 and compare with up and down ticks */
idle_ticks *= 100;
up_idle_ticks = (100 - dbs_tuners_ins.up_threshold) *
- usecs_to_jiffies(dbs_tuners_ins.sampling_rate);
+ usecs_to_jiffies(dbs_tuners_ins.sampling_rate);
if (idle_ticks < up_idle_ticks) {
- down_skip[cpu] = 0;
- for_each_cpu_mask(j, policy->cpus) {
- struct cpu_dbs_info_s *j_dbs_info;
+ this_dbs_info->down_skip = 0;
+ this_dbs_info->prev_cpu_idle_down =
+ this_dbs_info->prev_cpu_idle_up;
- j_dbs_info = &per_cpu(cpu_dbs_info, j);
- j_dbs_info->prev_cpu_idle_down =
- j_dbs_info->prev_cpu_idle_up;
- }
/* if we are already at full speed then break out early */
- if (requested_freq[cpu] == policy->max)
+ if (this_dbs_info->requested_freq == policy->max)
return;
freq_step = (dbs_tuners_ins.freq_step * policy->max) / 100;
if (unlikely(freq_step == 0))
freq_step = 5;
- requested_freq[cpu] += freq_step;
- if (requested_freq[cpu] > policy->max)
- requested_freq[cpu] = policy->max;
+ this_dbs_info->requested_freq += freq_step;
+ if (this_dbs_info->requested_freq > policy->max)
+ this_dbs_info->requested_freq = policy->max;
- __cpufreq_driver_target(policy, requested_freq[cpu],
+ __cpufreq_driver_target(policy, this_dbs_info->requested_freq,
CPUFREQ_RELATION_H);
return;
}
/* Check for frequency decrease */
- down_skip[cpu]++;
- if (down_skip[cpu] < dbs_tuners_ins.sampling_down_factor)
+ this_dbs_info->down_skip++;
+ if (this_dbs_info->down_skip < dbs_tuners_ins.sampling_down_factor)
return;
- idle_ticks = UINT_MAX;
- for_each_cpu_mask(j, policy->cpus) {
- unsigned int tmp_idle_ticks, total_idle_ticks;
- struct cpu_dbs_info_s *j_dbs_info;
+ /* Check for frequency decrease */
+ total_idle_ticks = this_dbs_info->prev_cpu_idle_up;
+ tmp_idle_ticks = total_idle_ticks -
+ this_dbs_info->prev_cpu_idle_down;
+ this_dbs_info->prev_cpu_idle_down = total_idle_ticks;
- j_dbs_info = &per_cpu(cpu_dbs_info, j);
- total_idle_ticks = j_dbs_info->prev_cpu_idle_up;
- tmp_idle_ticks = total_idle_ticks -
- j_dbs_info->prev_cpu_idle_down;
- j_dbs_info->prev_cpu_idle_down = total_idle_ticks;
-
- if (tmp_idle_ticks < idle_ticks)
- idle_ticks = tmp_idle_ticks;
- }
+ if (tmp_idle_ticks < idle_ticks)
+ idle_ticks = tmp_idle_ticks;
/* Scale idle ticks by 100 and compare with up and down ticks */
idle_ticks *= 100;
- down_skip[cpu] = 0;
+ this_dbs_info->down_skip = 0;
freq_down_sampling_rate = dbs_tuners_ins.sampling_rate *
dbs_tuners_ins.sampling_down_factor;
down_idle_ticks = (100 - dbs_tuners_ins.down_threshold) *
- usecs_to_jiffies(freq_down_sampling_rate);
+ usecs_to_jiffies(freq_down_sampling_rate);
if (idle_ticks > down_idle_ticks) {
- /* if we are already at the lowest speed then break out early
+ /*
+ * if we are already at the lowest speed then break out early
* or if we 'cannot' reduce the speed as the user might want
- * freq_step to be zero */
- if (requested_freq[cpu] == policy->min
+ * freq_step to be zero
+ */
+ if (this_dbs_info->requested_freq == policy->min
|| dbs_tuners_ins.freq_step == 0)
return;
if (unlikely(freq_step == 0))
freq_step = 5;
- requested_freq[cpu] -= freq_step;
- if (requested_freq[cpu] < policy->min)
- requested_freq[cpu] = policy->min;
+ this_dbs_info->requested_freq -= freq_step;
+ if (this_dbs_info->requested_freq < policy->min)
+ this_dbs_info->requested_freq = policy->min;
- __cpufreq_driver_target(policy,
- requested_freq[cpu],
- CPUFREQ_RELATION_H);
+ __cpufreq_driver_target(policy, this_dbs_info->requested_freq,
+ CPUFREQ_RELATION_H);
return;
}
}
j_dbs_info = &per_cpu(cpu_dbs_info, j);
j_dbs_info->cur_policy = policy;
- j_dbs_info->prev_cpu_idle_up = get_cpu_idle_time(j);
+ j_dbs_info->prev_cpu_idle_up = get_cpu_idle_time(cpu);
j_dbs_info->prev_cpu_idle_down
= j_dbs_info->prev_cpu_idle_up;
}
this_dbs_info->enable = 1;
+ this_dbs_info->down_skip = 0;
+ this_dbs_info->requested_freq = policy->cur;
sysfs_create_group(&policy->kobj, &dbs_attr_group);
dbs_enable++;
/*
if (dbs_enable == 1) {
unsigned int latency;
/* policy latency is in nS. Convert it to uS first */
+ latency = policy->cpuinfo.transition_latency / 1000;
+ if (latency == 0)
+ latency = 1;
- latency = policy->cpuinfo.transition_latency;
- if (latency < 1000)
- latency = 1000;
-
- def_sampling_rate = (latency / 1000) *
+ def_sampling_rate = 10 * latency *
DEF_SAMPLING_RATE_LATENCY_MULTIPLIER;
+
+ if (def_sampling_rate < MIN_STAT_SAMPLING_RATE)
+ def_sampling_rate = MIN_STAT_SAMPLING_RATE;
+
dbs_tuners_ins.sampling_rate = def_sampling_rate;
- dbs_tuners_ins.ignore_nice = 0;
- dbs_tuners_ins.freq_step = 5;
dbs_timer_init();
}
static struct dbs_tuners dbs_tuners_ins = {
.up_threshold = DEF_FREQUENCY_UP_THRESHOLD,
.sampling_down_factor = DEF_SAMPLING_DOWN_FACTOR,
+ .ignore_nice = 0,
};
static inline unsigned int get_cpu_idle_time(unsigned int cpu)
freq_next = (freq_next * policy->cur) /
(dbs_tuners_ins.up_threshold - 10);
+ if (freq_next < policy->min)
+ freq_next = policy->min;
+
if (freq_next <= ((policy->cur * 95) / 100))
__cpufreq_driver_target(policy, freq_next, CPUFREQ_RELATION_L);
}
return -EINVAL;
if (policy->cpuinfo.transition_latency >
- (TRANSITION_LATENCY_LIMIT * 1000))
+ (TRANSITION_LATENCY_LIMIT * 1000)) {
+ printk(KERN_WARNING "ondemand governor failed to load "
+ "due to too long transition latency\n");
return -EINVAL;
+ }
if (this_dbs_info->enable) /* Already enabled */
break;
def_sampling_rate = MIN_STAT_SAMPLING_RATE;
dbs_tuners_ins.sampling_rate = def_sampling_rate;
- dbs_tuners_ins.ignore_nice = 0;
-
dbs_timer_init();
}
*/
clear_pci_parity_errors();
- /* Create the MC sysfs entires */
+ /* Create the MC sysfs entries */
if (edac_sysfs_memctrl_setup()) {
edac_printk(KERN_ERR, EDAC_MC,
"Error initializing sysfs code\n");
static int dcdbas_reboot_notify(struct notifier_block *nb, unsigned long code,
void *unused)
{
- static unsigned int notify_cnt = 0;
-
switch (code) {
case SYS_DOWN:
case SYS_HALT:
case SYS_POWER_OFF:
if (host_control_on_shutdown) {
/* firmware is going to perform host control action */
- if (++notify_cnt == 2) {
- printk(KERN_WARNING
- "Please wait for shutdown "
- "action to complete...\n");
- dcdbas_host_control();
- }
- /*
- * register again and initiate the host control
- * action on the second notification to allow
- * everyone that registered to be notified
- */
- register_reboot_notifier(nb);
+ printk(KERN_WARNING "Please wait for shutdown "
+ "action to complete...\n");
+ dcdbas_host_control();
}
break;
}
static struct notifier_block dcdbas_reboot_nb = {
.notifier_call = dcdbas_reboot_notify,
.next = NULL,
- .priority = 0
+ .priority = INT_MIN
};
static DCDBAS_BIN_ATTR_RW(smi_data);
This driver can also be built as a module. If so, the module
will be called pcf8591.
-config SENSORS_RTC8564
- tristate "Epson 8564 RTC chip"
- depends on I2C && EXPERIMENTAL
- help
- If you say yes here you get support for the Epson 8564 RTC chip.
-
- This driver can also be built as a module. If so, the module
- will be called i2c-rtc8564.
-
config ISP1301_OMAP
tristate "Philips ISP1301 with OMAP OTG"
depends on I2C && ARCH_OMAP_OTG
This driver can also be built as a module. If so, the module
will be called max6875.
-config RTC_X1205_I2C
- tristate "Xicor X1205 RTC chip"
- depends on I2C && EXPERIMENTAL
- help
- If you say yes here you get support for the Xicor X1205 RTC chip.
-
- This driver can also be built as a module. If so, the module
- will be called x1205.
-
endmenu
obj-$(CONFIG_SENSORS_PCA9539) += pca9539.o
obj-$(CONFIG_SENSORS_PCF8574) += pcf8574.o
obj-$(CONFIG_SENSORS_PCF8591) += pcf8591.o
-obj-$(CONFIG_SENSORS_RTC8564) += rtc8564.o
obj-$(CONFIG_ISP1301_OMAP) += isp1301_omap.o
obj-$(CONFIG_TPS65010) += tps65010.o
-obj-$(CONFIG_RTC_X1205_I2C) += x1205.o
ifeq ($(CONFIG_I2C_DEBUG_CHIP),y)
EXTRA_CFLAGS += -DDEBUG
+++ /dev/null
-/*
- * linux/drivers/i2c/chips/rtc8564.c
- *
- * Copyright (C) 2002-2004 Stefan Eletzhofer
- *
- * based on linux/drivers/acron/char/pcf8583.c
- * Copyright (C) 2000 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Driver for system3's EPSON RTC 8564 chip
- */
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/bcd.h>
-#include <linux/i2c.h>
-#include <linux/slab.h>
-#include <linux/string.h>
-#include <linux/rtc.h> /* get the user-level API */
-#include <linux/init.h>
-
-#include "rtc8564.h"
-
-#ifdef DEBUG
-# define _DBG(x, fmt, args...) do{ if (debug>=x) printk(KERN_DEBUG"%s: " fmt "\n", __FUNCTION__, ##args); } while(0);
-#else
-# define _DBG(x, fmt, args...) do { } while(0);
-#endif
-
-#define _DBGRTCTM(x, rtctm) if (debug>=x) printk("%s: secs=%d, mins=%d, hours=%d, mday=%d, " \
- "mon=%d, year=%d, wday=%d VL=%d\n", __FUNCTION__, \
- (rtctm).secs, (rtctm).mins, (rtctm).hours, (rtctm).mday, \
- (rtctm).mon, (rtctm).year, (rtctm).wday, (rtctm).vl);
-
-struct rtc8564_data {
- struct i2c_client client;
- u16 ctrl;
-};
-
-static inline u8 _rtc8564_ctrl1(struct i2c_client *client)
-{
- struct rtc8564_data *data = i2c_get_clientdata(client);
- return data->ctrl & 0xff;
-}
-static inline u8 _rtc8564_ctrl2(struct i2c_client *client)
-{
- struct rtc8564_data *data = i2c_get_clientdata(client);
- return (data->ctrl & 0xff00) >> 8;
-}
-
-#define CTRL1(c) _rtc8564_ctrl1(c)
-#define CTRL2(c) _rtc8564_ctrl2(c)
-
-static int debug;
-module_param(debug, int, S_IRUGO | S_IWUSR);
-
-static struct i2c_driver rtc8564_driver;
-
-static unsigned short ignore[] = { I2C_CLIENT_END };
-static unsigned short normal_addr[] = { 0x51, I2C_CLIENT_END };
-
-static struct i2c_client_address_data addr_data = {
- .normal_i2c = normal_addr,
- .probe = ignore,
- .ignore = ignore,
-};
-
-static int rtc8564_read_mem(struct i2c_client *client, struct mem *mem);
-static int rtc8564_write_mem(struct i2c_client *client, struct mem *mem);
-
-static int rtc8564_read(struct i2c_client *client, unsigned char adr,
- unsigned char *buf, unsigned char len)
-{
- int ret = -EIO;
- unsigned char addr[1] = { adr };
- struct i2c_msg msgs[2] = {
- {client->addr, 0, 1, addr},
- {client->addr, I2C_M_RD, len, buf}
- };
-
- _DBG(1, "client=%p, adr=%d, buf=%p, len=%d", client, adr, buf, len);
-
- if (!buf) {
- ret = -EINVAL;
- goto done;
- }
-
- ret = i2c_transfer(client->adapter, msgs, 2);
- if (ret == 2) {
- ret = 0;
- }
-
-done:
- return ret;
-}
-
-static int rtc8564_write(struct i2c_client *client, unsigned char adr,
- unsigned char *data, unsigned char len)
-{
- int ret = 0;
- unsigned char _data[16];
- struct i2c_msg wr;
- int i;
-
- if (!data || len > 15) {
- ret = -EINVAL;
- goto done;
- }
-
- _DBG(1, "client=%p, adr=%d, buf=%p, len=%d", client, adr, data, len);
-
- _data[0] = adr;
- for (i = 0; i < len; i++) {
- _data[i + 1] = data[i];
- _DBG(5, "data[%d] = 0x%02x (%d)", i, data[i], data[i]);
- }
-
- wr.addr = client->addr;
- wr.flags = 0;
- wr.len = len + 1;
- wr.buf = _data;
-
- ret = i2c_transfer(client->adapter, &wr, 1);
- if (ret == 1) {
- ret = 0;
- }
-
-done:
- return ret;
-}
-
-static int rtc8564_attach(struct i2c_adapter *adap, int addr, int kind)
-{
- int ret;
- struct i2c_client *new_client;
- struct rtc8564_data *d;
- unsigned char data[10];
- unsigned char ad[1] = { 0 };
- struct i2c_msg ctrl_wr[1] = {
- {addr, 0, 2, data}
- };
- struct i2c_msg ctrl_rd[2] = {
- {addr, 0, 1, ad},
- {addr, I2C_M_RD, 2, data}
- };
-
- d = kzalloc(sizeof(struct rtc8564_data), GFP_KERNEL);
- if (!d) {
- ret = -ENOMEM;
- goto done;
- }
- new_client = &d->client;
-
- strlcpy(new_client->name, "RTC8564", I2C_NAME_SIZE);
- i2c_set_clientdata(new_client, d);
- new_client->addr = addr;
- new_client->adapter = adap;
- new_client->driver = &rtc8564_driver;
-
- _DBG(1, "client=%p", new_client);
-
- /* init ctrl1 reg */
- data[0] = 0;
- data[1] = 0;
- ret = i2c_transfer(new_client->adapter, ctrl_wr, 1);
- if (ret != 1) {
- printk(KERN_INFO "rtc8564: cant init ctrl1\n");
- ret = -ENODEV;
- goto done;
- }
-
- /* read back ctrl1 and ctrl2 */
- ret = i2c_transfer(new_client->adapter, ctrl_rd, 2);
- if (ret != 2) {
- printk(KERN_INFO "rtc8564: cant read ctrl\n");
- ret = -ENODEV;
- goto done;
- }
-
- d->ctrl = data[0] | (data[1] << 8);
-
- _DBG(1, "RTC8564_REG_CTRL1=%02x, RTC8564_REG_CTRL2=%02x",
- data[0], data[1]);
-
- ret = i2c_attach_client(new_client);
-done:
- if (ret) {
- kfree(d);
- }
- return ret;
-}
-
-static int rtc8564_probe(struct i2c_adapter *adap)
-{
- return i2c_probe(adap, &addr_data, rtc8564_attach);
-}
-
-static int rtc8564_detach(struct i2c_client *client)
-{
- i2c_detach_client(client);
- kfree(i2c_get_clientdata(client));
- return 0;
-}
-
-static int rtc8564_get_datetime(struct i2c_client *client, struct rtc_tm *dt)
-{
- int ret = -EIO;
- unsigned char buf[15];
-
- _DBG(1, "client=%p, dt=%p", client, dt);
-
- if (!dt)
- return -EINVAL;
-
- memset(buf, 0, sizeof(buf));
-
- ret = rtc8564_read(client, 0, buf, 15);
- if (ret)
- return ret;
-
- /* century stored in minute alarm reg */
- dt->year = BCD2BIN(buf[RTC8564_REG_YEAR]);
- dt->year += 100 * BCD2BIN(buf[RTC8564_REG_AL_MIN] & 0x3f);
- dt->mday = BCD2BIN(buf[RTC8564_REG_DAY] & 0x3f);
- dt->wday = BCD2BIN(buf[RTC8564_REG_WDAY] & 7);
- dt->mon = BCD2BIN(buf[RTC8564_REG_MON_CENT] & 0x1f);
-
- dt->secs = BCD2BIN(buf[RTC8564_REG_SEC] & 0x7f);
- dt->vl = (buf[RTC8564_REG_SEC] & 0x80) == 0x80;
- dt->mins = BCD2BIN(buf[RTC8564_REG_MIN] & 0x7f);
- dt->hours = BCD2BIN(buf[RTC8564_REG_HR] & 0x3f);
-
- _DBGRTCTM(2, *dt);
-
- return 0;
-}
-
-static int
-rtc8564_set_datetime(struct i2c_client *client, struct rtc_tm *dt, int datetoo)
-{
- int ret, len = 5;
- unsigned char buf[15];
-
- _DBG(1, "client=%p, dt=%p", client, dt);
-
- if (!dt)
- return -EINVAL;
-
- _DBGRTCTM(2, *dt);
-
- buf[RTC8564_REG_CTRL1] = CTRL1(client) | RTC8564_CTRL1_STOP;
- buf[RTC8564_REG_CTRL2] = CTRL2(client);
- buf[RTC8564_REG_SEC] = BIN2BCD(dt->secs);
- buf[RTC8564_REG_MIN] = BIN2BCD(dt->mins);
- buf[RTC8564_REG_HR] = BIN2BCD(dt->hours);
-
- if (datetoo) {
- len += 5;
- buf[RTC8564_REG_DAY] = BIN2BCD(dt->mday);
- buf[RTC8564_REG_WDAY] = BIN2BCD(dt->wday);
- buf[RTC8564_REG_MON_CENT] = BIN2BCD(dt->mon) & 0x1f;
- /* century stored in minute alarm reg */
- buf[RTC8564_REG_YEAR] = BIN2BCD(dt->year % 100);
- buf[RTC8564_REG_AL_MIN] = BIN2BCD(dt->year / 100);
- }
-
- ret = rtc8564_write(client, 0, buf, len);
- if (ret) {
- _DBG(1, "error writing data! %d", ret);
- }
-
- buf[RTC8564_REG_CTRL1] = CTRL1(client);
- ret = rtc8564_write(client, 0, buf, 1);
- if (ret) {
- _DBG(1, "error writing data! %d", ret);
- }
-
- return ret;
-}
-
-static int rtc8564_get_ctrl(struct i2c_client *client, unsigned int *ctrl)
-{
- struct rtc8564_data *data = i2c_get_clientdata(client);
-
- if (!ctrl)
- return -1;
-
- *ctrl = data->ctrl;
- return 0;
-}
-
-static int rtc8564_set_ctrl(struct i2c_client *client, unsigned int *ctrl)
-{
- struct rtc8564_data *data = i2c_get_clientdata(client);
- unsigned char buf[2];
-
- if (!ctrl)
- return -1;
-
- buf[0] = *ctrl & 0xff;
- buf[1] = (*ctrl & 0xff00) >> 8;
- data->ctrl = *ctrl;
-
- return rtc8564_write(client, 0, buf, 2);
-}
-
-static int rtc8564_read_mem(struct i2c_client *client, struct mem *mem)
-{
-
- if (!mem)
- return -EINVAL;
-
- return rtc8564_read(client, mem->loc, mem->data, mem->nr);
-}
-
-static int rtc8564_write_mem(struct i2c_client *client, struct mem *mem)
-{
-
- if (!mem)
- return -EINVAL;
-
- return rtc8564_write(client, mem->loc, mem->data, mem->nr);
-}
-
-static int
-rtc8564_command(struct i2c_client *client, unsigned int cmd, void *arg)
-{
-
- _DBG(1, "cmd=%d", cmd);
-
- switch (cmd) {
- case RTC_GETDATETIME:
- return rtc8564_get_datetime(client, arg);
-
- case RTC_SETTIME:
- return rtc8564_set_datetime(client, arg, 0);
-
- case RTC_SETDATETIME:
- return rtc8564_set_datetime(client, arg, 1);
-
- case RTC_GETCTRL:
- return rtc8564_get_ctrl(client, arg);
-
- case RTC_SETCTRL:
- return rtc8564_set_ctrl(client, arg);
-
- case MEM_READ:
- return rtc8564_read_mem(client, arg);
-
- case MEM_WRITE:
- return rtc8564_write_mem(client, arg);
-
- default:
- return -EINVAL;
- }
-}
-
-static struct i2c_driver rtc8564_driver = {
- .driver = {
- .name = "RTC8564",
- },
- .id = I2C_DRIVERID_RTC8564,
- .attach_adapter = rtc8564_probe,
- .detach_client = rtc8564_detach,
- .command = rtc8564_command
-};
-
-static __init int rtc8564_init(void)
-{
- return i2c_add_driver(&rtc8564_driver);
-}
-
-static __exit void rtc8564_exit(void)
-{
- i2c_del_driver(&rtc8564_driver);
-}
-
-MODULE_AUTHOR("Stefan Eletzhofer <Stefan.Eletzhofer@eletztrick.de>");
-MODULE_DESCRIPTION("EPSON RTC8564 Driver");
-MODULE_LICENSE("GPL");
-
-module_init(rtc8564_init);
-module_exit(rtc8564_exit);
+++ /dev/null
-/*
- * linux/drivers/i2c/chips/rtc8564.h
- *
- * Copyright (C) 2002-2004 Stefan Eletzhofer
- *
- * based on linux/drivers/acron/char/pcf8583.h
- * Copyright (C) 2000 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-struct rtc_tm {
- unsigned char secs;
- unsigned char mins;
- unsigned char hours;
- unsigned char mday;
- unsigned char mon;
- unsigned short year; /* xxxx 4 digits :) */
- unsigned char wday;
- unsigned char vl;
-};
-
-struct mem {
- unsigned int loc;
- unsigned int nr;
- unsigned char *data;
-};
-
-#define RTC_GETDATETIME 0
-#define RTC_SETTIME 1
-#define RTC_SETDATETIME 2
-#define RTC_GETCTRL 3
-#define RTC_SETCTRL 4
-#define MEM_READ 5
-#define MEM_WRITE 6
-
-#define RTC8564_REG_CTRL1 0x0 /* T 0 S 0 | T 0 0 0 */
-#define RTC8564_REG_CTRL2 0x1 /* 0 0 0 TI/TP | AF TF AIE TIE */
-#define RTC8564_REG_SEC 0x2 /* VL 4 2 1 | 8 4 2 1 */
-#define RTC8564_REG_MIN 0x3 /* x 4 2 1 | 8 4 2 1 */
-#define RTC8564_REG_HR 0x4 /* x x 2 1 | 8 4 2 1 */
-#define RTC8564_REG_DAY 0x5 /* x x 2 1 | 8 4 2 1 */
-#define RTC8564_REG_WDAY 0x6 /* x x x x | x 4 2 1 */
-#define RTC8564_REG_MON_CENT 0x7 /* C x x 1 | 8 4 2 1 */
-#define RTC8564_REG_YEAR 0x8 /* 8 4 2 1 | 8 4 2 1 */
-#define RTC8564_REG_AL_MIN 0x9 /* AE 4 2 1 | 8 4 2 1 */
-#define RTC8564_REG_AL_HR 0xa /* AE 4 2 1 | 8 4 2 1 */
-#define RTC8564_REG_AL_DAY 0xb /* AE x 2 1 | 8 4 2 1 */
-#define RTC8564_REG_AL_WDAY 0xc /* AE x x x | x 4 2 1 */
-#define RTC8564_REG_CLKOUT 0xd /* FE x x x | x x FD1 FD0 */
-#define RTC8564_REG_TCTL 0xe /* TE x x x | x x FD1 FD0 */
-#define RTC8564_REG_TIMER 0xf /* 8 bit binary */
-
-/* Control reg */
-#define RTC8564_CTRL1_TEST1 (1<<3)
-#define RTC8564_CTRL1_STOP (1<<5)
-#define RTC8564_CTRL1_TEST2 (1<<7)
-
-#define RTC8564_CTRL2_TIE (1<<0)
-#define RTC8564_CTRL2_AIE (1<<1)
-#define RTC8564_CTRL2_TF (1<<2)
-#define RTC8564_CTRL2_AF (1<<3)
-#define RTC8564_CTRL2_TI_TP (1<<4)
-
-/* CLKOUT frequencies */
-#define RTC8564_FD_32768HZ (0x0)
-#define RTC8564_FD_1024HZ (0x1)
-#define RTC8564_FD_32 (0x2)
-#define RTC8564_FD_1HZ (0x3)
-
-/* Timer CTRL */
-#define RTC8564_TD_4096HZ (0x0)
-#define RTC8564_TD_64HZ (0x1)
-#define RTC8564_TD_1HZ (0x2)
-#define RTC8564_TD_1_60HZ (0x3)
-
-#define I2C_DRIVERID_RTC8564 0xf000
req.cmd[0] = GPCMD_READ_CDVD_CAPACITY;
req.data = (char *)&capbuf;
req.data_len = sizeof(capbuf);
+ req.flags |= REQ_QUIET;
stat = cdrom_queue_packet_command(drive, &req);
if (stat == 0) {
#include <linux/timer.h>
#include <linux/mm.h>
#include <linux/interrupt.h>
+#include <linux/jiffies.h>
#include <linux/major.h>
#include <linux/devfs_fs_kernel.h>
#include <linux/errno.h>
}
if (time_after(jiffies, tape->insert_time))
tape->insert_speed = tape->insert_size / 1024 * HZ / (jiffies - tape->insert_time);
- if (jiffies - tape->avg_time >= HZ) {
+ if (time_after_eq(jiffies, tape->avg_time + HZ)) {
tape->avg_speed = tape->avg_size * HZ / (jiffies - tape->avg_time) / 1024;
tape->avg_size = 0;
tape->avg_time = jiffies;
} else {
return ide_do_reset(drive);
}
- } else if (jiffies - tape->dsc_polling_start > IDETAPE_DSC_MA_THRESHOLD)
+ } else if (time_after(jiffies, tape->dsc_polling_start + IDETAPE_DSC_MA_THRESHOLD))
tape->dsc_polling_frequency = IDETAPE_DSC_MA_SLOW;
idetape_postpone_request(drive);
return ide_stopped;
break;
case AMD_UDMA_66:
- pci_read_config_dword(dev, AMD_UDMA_TIMING, &u);
- for (i = 24; i >= 0; i -= 8)
- if ((u >> i) & 4)
- amd_80w |= (1 << (1 - (i >> 4)));
+ /* no host side cable detection */
+ amd_80w = 0x03;
break;
}
if (amd_clock < 20000 || amd_clock > 50000) {
printk(KERN_WARNING "%s: User given PCI clock speed impossible (%d), using 33 MHz instead.\n",
amd_chipset->name, amd_clock);
- printk(KERN_WARNING "%s: Use ide0=ata66 if you want to assume 80-wire cable\n",
- amd_chipset->name);
amd_clock = 33333;
}
static int ide_generic_all; /* Set to claim all devices */
+#ifndef MODULE
static int __init ide_generic_all_on(char *unused)
{
ide_generic_all = 1;
printk(KERN_INFO "IDE generic will claim all unknown PCI IDE storage controllers.\n");
return 1;
}
-
__setup("all-generic-ide", ide_generic_all_on);
+#endif
static void __devinit init_hwif_generic (ide_hwif_t *hwif)
{
{ "SiS5596", PCI_DEVICE_ID_SI_5596, ATA_16 },
{ "SiS5571", PCI_DEVICE_ID_SI_5571, ATA_16 },
+ { "SiS5517", PCI_DEVICE_ID_SI_5517, ATA_16 },
{ "SiS551x", PCI_DEVICE_ID_SI_5511, ATA_16 },
};
case 3: test1 = 0x30|0x03; break;
case 2: test1 = 0x40|0x04; break;
case 1: test1 = 0x60|0x07; break;
+ case 0: test1 = 0x00; break;
default: break;
}
pci_write_config_byte(dev, drive_pci, test1);
static int input_open_file(struct inode *inode, struct file *file)
{
struct input_handler *handler = input_table[iminor(inode) >> 5];
- struct file_operations *old_fops, *new_fops = NULL;
+ const struct file_operations *old_fops, *new_fops = NULL;
int err;
/* No load-on-demand here? */
{
char *p;
char *compileinfo;
+ int major_ret;
if ((p = strchr(revision, ':')) != 0 && p[1]) {
strlcpy(rev, p + 2, sizeof(rev));
} else
strcpy(rev, "1.0");
- if (register_chrdev(capi_major, "capi20", &capi_fops)) {
+ major_ret = register_chrdev(capi_major, "capi20", &capi_fops);
+ if (major_ret < 0) {
printk(KERN_ERR "capi20: unable to get major %d\n", capi_major);
- return -EIO;
+ return major_ret;
}
-
+ capi_major = major_ret;
capi_class = class_create(THIS_MODULE, "capi");
if (IS_ERR(capi_class)) {
unregister_chrdev(capi_major, "capi20");
};
static void
-create_seq_entry(char *name, mode_t mode, struct file_operations *f)
+create_seq_entry(char *name, mode_t mode, const struct file_operations *f)
{
struct proc_dir_entry *entry;
entry = create_proc_entry(name, mode, NULL);
static struct class *adb_dev_class;
struct adb_driver *adb_controller;
-struct notifier_block *adb_client_list = NULL;
+BLOCKING_NOTIFIER_HEAD(adb_client_list);
static int adb_got_sleep;
static int adb_inited;
static pid_t adb_probe_task_pid;
/* Stop autopoll */
if (adb_controller->autopoll)
adb_controller->autopoll(0);
- ret = notifier_call_chain(&adb_client_list, ADB_MSG_POWERDOWN, NULL);
+ ret = blocking_notifier_call_chain(&adb_client_list,
+ ADB_MSG_POWERDOWN, NULL);
if (ret & NOTIFY_STOP_MASK) {
up(&adb_probe_mutex);
return PBOOK_SLEEP_REFUSE;
if (adb_controller->autopoll)
adb_controller->autopoll(0);
- nret = notifier_call_chain(&adb_client_list, ADB_MSG_PRE_RESET, NULL);
+ nret = blocking_notifier_call_chain(&adb_client_list,
+ ADB_MSG_PRE_RESET, NULL);
if (nret & NOTIFY_STOP_MASK) {
if (adb_controller->autopoll)
adb_controller->autopoll(autopoll_devs);
}
up(&adb_handler_sem);
- nret = notifier_call_chain(&adb_client_list, ADB_MSG_POST_RESET, NULL);
+ nret = blocking_notifier_call_chain(&adb_client_list,
+ ADB_MSG_POST_RESET, NULL);
if (nret & NOTIFY_STOP_MASK)
return -EBUSY;
adbhid_probe();
- notifier_chain_register(&adb_client_list, &adbhid_adb_notifier);
+ blocking_notifier_chain_register(&adb_client_list,
+ &adbhid_adb_notifier);
return 0;
}
int __fake_sleep;
int asleep;
-struct notifier_block *sleep_notifier_list;
+BLOCKING_NOTIFIER_HEAD(sleep_notifier_list);
#ifdef CONFIG_ADB
static int adb_dev_map = 0;
static int pmu_fully_inited = 0;
int asleep;
-struct notifier_block *sleep_notifier_list;
+BLOCKING_NOTIFIER_HEAD(sleep_notifier_list);
static int pmu_probe(void);
static int pmu_init(void);
struct adb_request sleep_req;
/* Notify device drivers */
- ret = notifier_call_chain(&sleep_notifier_list, PBOOK_SLEEP, NULL);
+ ret = blocking_notifier_call_chain(&sleep_notifier_list,
+ PBOOK_SLEEP, NULL);
if (ret & NOTIFY_STOP_MASK)
return -EBUSY;
enable_irq(i);
/* Notify drivers */
- notifier_call_chain(&sleep_notifier_list, PBOOK_WAKE, NULL);
+ blocking_notifier_call_chain(&sleep_notifier_list, PBOOK_WAKE, NULL);
/* reenable ADB autopoll */
pmu_adb_autopoll(adb_dev_map);
static LIST_HEAD(wf_controls);
static LIST_HEAD(wf_sensors);
static DEFINE_MUTEX(wf_lock);
-static struct notifier_block *wf_client_list;
+static BLOCKING_NOTIFIER_HEAD(wf_client_list);
static int wf_client_count;
static unsigned int wf_overtemp;
static unsigned int wf_overtemp_counter;
static inline void wf_notify(int event, void *param)
{
- notifier_call_chain(&wf_client_list, event, param);
+ blocking_notifier_call_chain(&wf_client_list, event, param);
}
int wf_critical_overtemp(void)
struct wf_sensor *sr;
mutex_lock(&wf_lock);
- rc = notifier_chain_register(&wf_client_list, nb);
+ rc = blocking_notifier_chain_register(&wf_client_list, nb);
if (rc != 0)
goto bail;
wf_client_count++;
int wf_unregister_client(struct notifier_block *nb)
{
mutex_lock(&wf_lock);
- notifier_chain_unregister(&wf_client_list, nb);
+ blocking_notifier_chain_unregister(&wf_client_list, nb);
wf_client_count++;
if (wf_client_count == 0)
wf_stop_thread();
If unsure, say Y.
+config MD_RAID5_RESHAPE
+ bool "Support adding drives to a raid-5 array (experimental)"
+ depends on MD_RAID5 && EXPERIMENTAL
+ ---help---
+ A RAID-5 set can be expanded by adding extra drives. This
+ requires "restriping" the array which means (almost) every
+ block must be written to a different place.
+
+ This option allows such restriping to be done while the array
+ is online. However it is still EXPERIMENTAL code. It should
+ work, but please be sure that you have backups.
+
+ You will need a version of mdadm newer than 2.3.1. During the
+ early stage of reshape there is a critical section where live data
+ is being over-written. A crash during this time needs extra care
+ for recovery. The newer mdadm takes a copy of the data in the
+ critical section and will restore it, if necessary, after a crash.
+
+ The mdadm usage is e.g.
+ mdadm --grow /dev/md1 --raid-disks=6
+ to grow '/dev/md1' to having 6 disks.
+
+ Note: The array can only be expanded, not contracted.
+ There should be enough spares already present to make the new
+ array workable.
+
config MD_RAID6
tristate "RAID-6 mode"
depends on BLK_DEV_MD
char *ivopts;
unsigned int crypto_flags;
unsigned int key_size;
+ unsigned long long tmpll;
if (argc != 5) {
ti->error = PFX "Not enough arguments";
goto bad5;
}
- if (sscanf(argv[2], SECTOR_FORMAT, &cc->iv_offset) != 1) {
+ if (sscanf(argv[2], "%llu", &tmpll) != 1) {
ti->error = PFX "Invalid iv_offset sector";
goto bad5;
}
+ cc->iv_offset = tmpll;
- if (sscanf(argv[4], SECTOR_FORMAT, &cc->start) != 1) {
+ if (sscanf(argv[4], "%llu", &tmpll) != 1) {
ti->error = PFX "Invalid device sector";
goto bad5;
}
+ cc->start = tmpll;
if (dm_get_device(ti, argv[3], cc->start, ti->len,
dm_table_get_mode(ti->table), &cc->dev)) {
result[sz++] = '-';
}
- DMEMIT(" " SECTOR_FORMAT " %s " SECTOR_FORMAT,
- cc->iv_offset, cc->dev->name, cc->start);
+ DMEMIT(" %llu %s %llu", (unsigned long long)cc->iv_offset,
+ cc->dev->name, (unsigned long long)cc->start);
break;
}
return 0;
#include <linux/slab.h>
#include <linux/devfs_fs_kernel.h>
#include <linux/dm-ioctl.h>
+#include <linux/hdreg.h>
#include <asm/uaccess.h>
dm_table_put(table);
}
- dm_put(hc->md);
if (hc->new_map)
dm_table_put(hc->new_map);
+ dm_put(hc->md);
free_cell(hc);
}
*/
static struct hash_cell *__find_device_hash_cell(struct dm_ioctl *param)
{
+ struct mapped_device *md;
+ void *mdptr = NULL;
+
if (*param->uuid)
return __get_uuid_cell(param->uuid);
- else if (*param->name)
+
+ if (*param->name)
return __get_name_cell(param->name);
- else
- return dm_get_mdptr(huge_decode_dev(param->dev));
+
+ md = dm_get_md(huge_decode_dev(param->dev));
+ if (md) {
+ mdptr = dm_get_mdptr(md);
+ dm_put(md);
+ }
+
+ return mdptr;
}
static struct mapped_device *find_device(struct dm_ioctl *param)
return dm_hash_rename(param->name, new_name);
}
+static int dev_set_geometry(struct dm_ioctl *param, size_t param_size)
+{
+ int r = -EINVAL, x;
+ struct mapped_device *md;
+ struct hd_geometry geometry;
+ unsigned long indata[4];
+ char *geostr = (char *) param + param->data_start;
+
+ md = find_device(param);
+ if (!md)
+ return -ENXIO;
+
+ if (geostr < (char *) (param + 1) ||
+ invalid_str(geostr, (void *) param + param_size)) {
+ DMWARN("Invalid geometry supplied.");
+ goto out;
+ }
+
+ x = sscanf(geostr, "%lu %lu %lu %lu", indata,
+ indata + 1, indata + 2, indata + 3);
+
+ if (x != 4) {
+ DMWARN("Unable to interpret geometry settings.");
+ goto out;
+ }
+
+ if (indata[0] > 65535 || indata[1] > 255 ||
+ indata[2] > 255 || indata[3] > ULONG_MAX) {
+ DMWARN("Geometry exceeds range limits.");
+ goto out;
+ }
+
+ geometry.cylinders = indata[0];
+ geometry.heads = indata[1];
+ geometry.sectors = indata[2];
+ geometry.start = indata[3];
+
+ r = dm_set_geometry(md, &geometry);
+ if (!r)
+ r = __dev_status(md, param);
+
+ param->data_size = 0;
+
+out:
+ dm_put(md);
+ return r;
+}
+
static int do_suspend(struct dm_ioctl *param)
{
int r = 0;
int r;
struct hash_cell *hc;
struct dm_table *t;
+ struct mapped_device *md;
- r = dm_table_create(&t, get_mode(param), param->target_count);
+ md = find_device(param);
+ if (!md)
+ return -ENXIO;
+
+ r = dm_table_create(&t, get_mode(param), param->target_count, md);
if (r)
- return r;
+ goto out;
r = populate_table(t, param, param_size);
if (r) {
dm_table_put(t);
- return r;
+ goto out;
}
down_write(&_hash_lock);
- hc = __find_device_hash_cell(param);
- if (!hc) {
- DMWARN("device doesn't appear to be in the dev hash table.");
- up_write(&_hash_lock);
+ hc = dm_get_mdptr(md);
+ if (!hc || hc->md != md) {
+ DMWARN("device has been removed from the dev hash table.");
dm_table_put(t);
- return -ENXIO;
+ up_write(&_hash_lock);
+ r = -ENXIO;
+ goto out;
}
if (hc->new_map)
dm_table_put(hc->new_map);
hc->new_map = t;
+ up_write(&_hash_lock);
+
param->flags |= DM_INACTIVE_PRESENT_FLAG;
+ r = __dev_status(md, param);
+
+out:
+ dm_put(md);
- r = __dev_status(hc->md, param);
- up_write(&_hash_lock);
return r;
}
{DM_LIST_VERSIONS_CMD, list_versions},
- {DM_TARGET_MSG_CMD, target_message}
+ {DM_TARGET_MSG_CMD, target_message},
+ {DM_DEV_SET_GEOMETRY_CMD, dev_set_geometry}
};
return (cmd >= ARRAY_SIZE(_ioctls)) ? NULL : _ioctls[cmd].fn;
static int linear_ctr(struct dm_target *ti, unsigned int argc, char **argv)
{
struct linear_c *lc;
+ unsigned long long tmp;
if (argc != 2) {
ti->error = "dm-linear: Invalid argument count";
return -ENOMEM;
}
- if (sscanf(argv[1], SECTOR_FORMAT, &lc->start) != 1) {
+ if (sscanf(argv[1], "%llu", &tmp) != 1) {
ti->error = "dm-linear: Invalid device sector";
goto bad;
}
+ lc->start = tmp;
if (dm_get_device(ti, argv[0], lc->start, ti->len,
dm_table_get_mode(ti->table), &lc->dev)) {
break;
case STATUSTYPE_TABLE:
- snprintf(result, maxlen, "%s " SECTOR_FORMAT, lc->dev->name,
- lc->start);
+ snprintf(result, maxlen, "%s %llu", lc->dev->name,
+ (unsigned long long)lc->start);
break;
}
return 0;
spin_lock_irqsave(&rh->region_lock, flags);
if (atomic_dec_and_test(®->pending)) {
+ /*
+ * There is no pending I/O for this region.
+ * We can move the region to corresponding list for next action.
+ * At this point, the region is not yet connected to any list.
+ *
+ * If the state is RH_NOSYNC, the region should be kept off
+ * from clean list.
+ * The hash entry for RH_NOSYNC will remain in memory
+ * until the region is recovered or the map is reloaded.
+ */
+
+ /* do nothing for RH_NOSYNC */
if (reg->state == RH_RECOVERING) {
list_add_tail(®->list, &rh->quiesced_regions);
- } else {
+ } else if (reg->state == RH_DIRTY) {
reg->state = RH_CLEAN;
list_add(®->list, &rh->clean_regions);
}
static int get_mirror(struct mirror_set *ms, struct dm_target *ti,
unsigned int mirror, char **argv)
{
- sector_t offset;
+ unsigned long long offset;
- if (sscanf(argv[1], SECTOR_FORMAT, &offset) != 1) {
+ if (sscanf(argv[1], "%llu", &offset) != 1) {
ti->error = "dm-mirror: Invalid offset";
return -EINVAL;
}
for (m = 0; m < ms->nr_mirrors; m++)
DMEMIT("%s ", ms->mirror[m].dev->name);
- DMEMIT(SECTOR_FORMAT "/" SECTOR_FORMAT,
- ms->rh.log->type->get_sync_count(ms->rh.log),
- ms->nr_regions);
+ DMEMIT("%llu/%llu",
+ (unsigned long long)ms->rh.log->type->
+ get_sync_count(ms->rh.log),
+ (unsigned long long)ms->nr_regions);
break;
case STATUSTYPE_TABLE:
DMEMIT("%d ", ms->nr_mirrors);
for (m = 0; m < ms->nr_mirrors; m++)
- DMEMIT("%s " SECTOR_FORMAT " ",
- ms->mirror[m].dev->name, ms->mirror[m].offset);
+ DMEMIT("%s %llu ", ms->mirror[m].dev->name,
+ (unsigned long long)ms->mirror[m].offset);
}
return 0;
struct bio_list snapshot_bios;
/*
- * Other pending_exceptions that are processing this
- * chunk. When this list is empty, we know we can
- * complete the origins.
+ * Short-term queue of pending exceptions prior to submission.
*/
- struct list_head siblings;
+ struct list_head list;
+
+ /*
+ * The primary pending_exception is the one that holds
+ * the sibling_count and the list of origin_bios for a
+ * group of pending_exceptions. It is always last to get freed.
+ * These fields get set up when writing to the origin.
+ */
+ struct pending_exception *primary_pe;
+
+ /*
+ * Number of pending_exceptions processing this chunk.
+ * When this drops to zero we must complete the origin bios.
+ * If incrementing or decrementing this, hold pe->snap->lock for
+ * the sibling concerned and not pe->primary_pe->snap->lock unless
+ * they are the same.
+ */
+ atomic_t sibling_count;
/* Pointer back to snapshot context */
struct dm_snapshot *snap;
down_write(&s->lock);
s->valid = 0;
up_write(&s->lock);
+
+ dm_table_event(s->table);
}
}
{
struct dm_snapshot *s = (struct dm_snapshot *) ti->private;
+ /* Prevent further origin writes from using this snapshot. */
+ /* After this returns there can be no new kcopyd jobs. */
unregister_snapshot(s);
+ kcopyd_client_destroy(s->kcopyd_client);
+
exit_exception_table(&s->pending, pending_cache);
exit_exception_table(&s->complete, exception_cache);
dm_put_device(ti, s->origin);
dm_put_device(ti, s->cow);
- kcopyd_client_destroy(s->kcopyd_client);
+
kfree(s);
}
}
}
+static inline void error_snapshot_bios(struct pending_exception *pe)
+{
+ error_bios(bio_list_get(&pe->snapshot_bios));
+}
+
static struct bio *__flush_bios(struct pending_exception *pe)
{
- struct pending_exception *sibling;
+ /*
+ * If this pe is involved in a write to the origin and
+ * it is the last sibling to complete then release
+ * the bios for the original write to the origin.
+ */
+
+ if (pe->primary_pe &&
+ atomic_dec_and_test(&pe->primary_pe->sibling_count))
+ return bio_list_get(&pe->primary_pe->origin_bios);
+
+ return NULL;
+}
+
+static void __invalidate_snapshot(struct dm_snapshot *s,
+ struct pending_exception *pe, int err)
+{
+ if (!s->valid)
+ return;
- if (list_empty(&pe->siblings))
- return bio_list_get(&pe->origin_bios);
+ if (err == -EIO)
+ DMERR("Invalidating snapshot: Error reading/writing.");
+ else if (err == -ENOMEM)
+ DMERR("Invalidating snapshot: Unable to allocate exception.");
- sibling = list_entry(pe->siblings.next,
- struct pending_exception, siblings);
+ if (pe)
+ remove_exception(&pe->e);
- list_del(&pe->siblings);
+ if (s->store.drop_snapshot)
+ s->store.drop_snapshot(&s->store);
- /* This is fine as long as kcopyd is single-threaded. If kcopyd
- * becomes multi-threaded, we'll need some locking here.
- */
- bio_list_merge(&sibling->origin_bios, &pe->origin_bios);
+ s->valid = 0;
- return NULL;
+ dm_table_event(s->table);
}
static void pending_complete(struct pending_exception *pe, int success)
{
struct exception *e;
+ struct pending_exception *primary_pe;
struct dm_snapshot *s = pe->snap;
struct bio *flush = NULL;
- if (success) {
- e = alloc_exception();
- if (!e) {
- DMWARN("Unable to allocate exception.");
- down_write(&s->lock);
- s->store.drop_snapshot(&s->store);
- s->valid = 0;
- flush = __flush_bios(pe);
- up_write(&s->lock);
-
- error_bios(bio_list_get(&pe->snapshot_bios));
- goto out;
- }
- *e = pe->e;
-
- /*
- * Add a proper exception, and remove the
- * in-flight exception from the list.
- */
+ if (!success) {
+ /* Read/write error - snapshot is unusable */
down_write(&s->lock);
- insert_exception(&s->complete, e);
- remove_exception(&pe->e);
+ __invalidate_snapshot(s, pe, -EIO);
flush = __flush_bios(pe);
-
- /* Submit any pending write bios */
up_write(&s->lock);
- flush_bios(bio_list_get(&pe->snapshot_bios));
- } else {
- /* Read/write error - snapshot is unusable */
+ error_snapshot_bios(pe);
+ goto out;
+ }
+
+ e = alloc_exception();
+ if (!e) {
down_write(&s->lock);
- if (s->valid)
- DMERR("Error reading/writing snapshot");
- s->store.drop_snapshot(&s->store);
- s->valid = 0;
- remove_exception(&pe->e);
+ __invalidate_snapshot(s, pe, -ENOMEM);
flush = __flush_bios(pe);
up_write(&s->lock);
- error_bios(bio_list_get(&pe->snapshot_bios));
+ error_snapshot_bios(pe);
+ goto out;
+ }
+ *e = pe->e;
- dm_table_event(s->table);
+ /*
+ * Add a proper exception, and remove the
+ * in-flight exception from the list.
+ */
+ down_write(&s->lock);
+ if (!s->valid) {
+ flush = __flush_bios(pe);
+ up_write(&s->lock);
+
+ free_exception(e);
+
+ error_snapshot_bios(pe);
+ goto out;
}
+ insert_exception(&s->complete, e);
+ remove_exception(&pe->e);
+ flush = __flush_bios(pe);
+
+ up_write(&s->lock);
+
+ /* Submit any pending write bios */
+ flush_bios(bio_list_get(&pe->snapshot_bios));
+
out:
- free_pending_exception(pe);
+ primary_pe = pe->primary_pe;
+
+ /*
+ * Free the pe if it's not linked to an origin write or if
+ * it's not itself a primary pe.
+ */
+ if (!primary_pe || primary_pe != pe)
+ free_pending_exception(pe);
+
+ /*
+ * Free the primary pe if nothing references it.
+ */
+ if (primary_pe && !atomic_read(&primary_pe->sibling_count))
+ free_pending_exception(primary_pe);
if (flush)
flush_bios(flush);
if (e) {
/* cast the exception to a pending exception */
pe = container_of(e, struct pending_exception, e);
+ goto out;
+ }
- } else {
- /*
- * Create a new pending exception, we don't want
- * to hold the lock while we do this.
- */
- up_write(&s->lock);
- pe = alloc_pending_exception();
- down_write(&s->lock);
+ /*
+ * Create a new pending exception, we don't want
+ * to hold the lock while we do this.
+ */
+ up_write(&s->lock);
+ pe = alloc_pending_exception();
+ down_write(&s->lock);
- e = lookup_exception(&s->pending, chunk);
- if (e) {
- free_pending_exception(pe);
- pe = container_of(e, struct pending_exception, e);
- } else {
- pe->e.old_chunk = chunk;
- bio_list_init(&pe->origin_bios);
- bio_list_init(&pe->snapshot_bios);
- INIT_LIST_HEAD(&pe->siblings);
- pe->snap = s;
- pe->started = 0;
-
- if (s->store.prepare_exception(&s->store, &pe->e)) {
- free_pending_exception(pe);
- s->valid = 0;
- return NULL;
- }
+ if (!s->valid) {
+ free_pending_exception(pe);
+ return NULL;
+ }
- insert_exception(&s->pending, &pe->e);
- }
+ e = lookup_exception(&s->pending, chunk);
+ if (e) {
+ free_pending_exception(pe);
+ pe = container_of(e, struct pending_exception, e);
+ goto out;
+ }
+
+ pe->e.old_chunk = chunk;
+ bio_list_init(&pe->origin_bios);
+ bio_list_init(&pe->snapshot_bios);
+ pe->primary_pe = NULL;
+ atomic_set(&pe->sibling_count, 1);
+ pe->snap = s;
+ pe->started = 0;
+
+ if (s->store.prepare_exception(&s->store, &pe->e)) {
+ free_pending_exception(pe);
+ return NULL;
}
+ insert_exception(&s->pending, &pe->e);
+
+ out:
return pe;
}
{
struct exception *e;
struct dm_snapshot *s = (struct dm_snapshot *) ti->private;
+ int copy_needed = 0;
int r = 1;
chunk_t chunk;
- struct pending_exception *pe;
+ struct pending_exception *pe = NULL;
chunk = sector_to_chunk(s, bio->bi_sector);
/* Full snapshots are not usable */
+ /* To get here the table must be live so s->active is always set. */
if (!s->valid)
return -EIO;
* to copy an exception */
down_write(&s->lock);
+ if (!s->valid) {
+ r = -EIO;
+ goto out_unlock;
+ }
+
/* If the block is already remapped - use that, else remap it */
e = lookup_exception(&s->complete, chunk);
if (e) {
remap_exception(s, e, bio);
- up_write(&s->lock);
-
- } else {
- pe = __find_pending_exception(s, bio);
-
- if (!pe) {
- if (s->store.drop_snapshot)
- s->store.drop_snapshot(&s->store);
- s->valid = 0;
- r = -EIO;
- up_write(&s->lock);
- } else {
- remap_exception(s, &pe->e, bio);
- bio_list_add(&pe->snapshot_bios, bio);
-
- if (!pe->started) {
- /* this is protected by snap->lock */
- pe->started = 1;
- up_write(&s->lock);
- start_copy(pe);
- } else
- up_write(&s->lock);
- r = 0;
- }
+ goto out_unlock;
+ }
+
+ pe = __find_pending_exception(s, bio);
+ if (!pe) {
+ __invalidate_snapshot(s, pe, -ENOMEM);
+ r = -EIO;
+ goto out_unlock;
+ }
+
+ remap_exception(s, &pe->e, bio);
+ bio_list_add(&pe->snapshot_bios, bio);
+
+ if (!pe->started) {
+ /* this is protected by snap->lock */
+ pe->started = 1;
+ copy_needed = 1;
}
+ r = 0;
+
+ out_unlock:
+ up_write(&s->lock);
+
+ if (copy_needed)
+ start_copy(pe);
} else {
/*
* FIXME: this read path scares me because we
/* Do reads */
down_read(&s->lock);
+ if (!s->valid) {
+ up_read(&s->lock);
+ return -EIO;
+ }
+
/* See if it it has been remapped */
e = lookup_exception(&s->complete, chunk);
if (e)
snap->store.fraction_full(&snap->store,
&numerator,
&denominator);
- snprintf(result, maxlen,
- SECTOR_FORMAT "/" SECTOR_FORMAT,
- numerator, denominator);
+ snprintf(result, maxlen, "%llu/%llu",
+ (unsigned long long)numerator,
+ (unsigned long long)denominator);
}
else
snprintf(result, maxlen, "Unknown");
* to make private copies if the output is to
* make sense.
*/
- snprintf(result, maxlen, "%s %s %c " SECTOR_FORMAT,
+ snprintf(result, maxlen, "%s %s %c %llu",
snap->origin->name, snap->cow->name,
- snap->type, snap->chunk_size);
+ snap->type,
+ (unsigned long long)snap->chunk_size);
break;
}
/*-----------------------------------------------------------------
* Origin methods
*---------------------------------------------------------------*/
-static void list_merge(struct list_head *l1, struct list_head *l2)
-{
- struct list_head *l1_n, *l2_p;
-
- l1_n = l1->next;
- l2_p = l2->prev;
-
- l1->next = l2;
- l2->prev = l1;
-
- l2_p->next = l1_n;
- l1_n->prev = l2_p;
-}
-
static int __origin_write(struct list_head *snapshots, struct bio *bio)
{
- int r = 1, first = 1;
+ int r = 1, first = 0;
struct dm_snapshot *snap;
struct exception *e;
- struct pending_exception *pe, *last = NULL;
+ struct pending_exception *pe, *next_pe, *primary_pe = NULL;
chunk_t chunk;
+ LIST_HEAD(pe_queue);
/* Do all the snapshots on this origin */
list_for_each_entry (snap, snapshots, list) {
+ down_write(&snap->lock);
+
/* Only deal with valid and active snapshots */
if (!snap->valid || !snap->active)
- continue;
+ goto next_snapshot;
/* Nothing to do if writing beyond end of snapshot */
if (bio->bi_sector >= dm_table_get_size(snap->table))
- continue;
-
- down_write(&snap->lock);
+ goto next_snapshot;
/*
* Remember, different snapshots can have
* Check exception table to see if block
* is already remapped in this snapshot
* and trigger an exception if not.
+ *
+ * sibling_count is initialised to 1 so pending_complete()
+ * won't destroy the primary_pe while we're inside this loop.
*/
e = lookup_exception(&snap->complete, chunk);
- if (!e) {
- pe = __find_pending_exception(snap, bio);
- if (!pe) {
- snap->store.drop_snapshot(&snap->store);
- snap->valid = 0;
-
- } else {
- if (last)
- list_merge(&pe->siblings,
- &last->siblings);
-
- last = pe;
- r = 0;
+ if (e)
+ goto next_snapshot;
+
+ pe = __find_pending_exception(snap, bio);
+ if (!pe) {
+ __invalidate_snapshot(snap, pe, ENOMEM);
+ goto next_snapshot;
+ }
+
+ if (!primary_pe) {
+ /*
+ * Either every pe here has same
+ * primary_pe or none has one yet.
+ */
+ if (pe->primary_pe)
+ primary_pe = pe->primary_pe;
+ else {
+ primary_pe = pe;
+ first = 1;
}
+
+ bio_list_add(&primary_pe->origin_bios, bio);
+
+ r = 0;
+ }
+
+ if (!pe->primary_pe) {
+ atomic_inc(&primary_pe->sibling_count);
+ pe->primary_pe = primary_pe;
+ }
+
+ if (!pe->started) {
+ pe->started = 1;
+ list_add_tail(&pe->list, &pe_queue);
}
+ next_snapshot:
up_write(&snap->lock);
}
+ if (!primary_pe)
+ goto out;
+
/*
- * Now that we have a complete pe list we can start the copying.
+ * If this is the first time we're processing this chunk and
+ * sibling_count is now 1 it means all the pending exceptions
+ * got completed while we were in the loop above, so it falls to
+ * us here to remove the primary_pe and submit any origin_bios.
*/
- if (last) {
- pe = last;
- do {
- down_write(&pe->snap->lock);
- if (first)
- bio_list_add(&pe->origin_bios, bio);
- if (!pe->started) {
- pe->started = 1;
- up_write(&pe->snap->lock);
- start_copy(pe);
- } else
- up_write(&pe->snap->lock);
- first = 0;
- pe = list_entry(pe->siblings.next,
- struct pending_exception, siblings);
-
- } while (pe != last);
+
+ if (first && atomic_dec_and_test(&primary_pe->sibling_count)) {
+ flush_bios(bio_list_get(&primary_pe->origin_bios));
+ free_pending_exception(primary_pe);
+ /* If we got here, pe_queue is necessarily empty. */
+ goto out;
}
+ /*
+ * Now that we have a complete pe list we can start the copying.
+ */
+ list_for_each_entry_safe(pe, next_pe, &pe_queue, list)
+ start_copy(pe);
+
+ out:
return r;
}
static int get_stripe(struct dm_target *ti, struct stripe_c *sc,
unsigned int stripe, char **argv)
{
- sector_t start;
+ unsigned long long start;
- if (sscanf(argv[1], SECTOR_FORMAT, &start) != 1)
+ if (sscanf(argv[1], "%llu", &start) != 1)
return -EINVAL;
if (dm_get_device(ti, argv[0], start, sc->stripe_width,
return -EINVAL;
}
- if (((uint32_t)ti->len) & (chunk_size - 1)) {
+ if (ti->len & (chunk_size - 1)) {
ti->error = "dm-stripe: Target length not divisible by "
"chunk size";
return -EINVAL;
break;
case STATUSTYPE_TABLE:
- DMEMIT("%d " SECTOR_FORMAT, sc->stripes, sc->chunk_mask + 1);
+ DMEMIT("%d %llu", sc->stripes,
+ (unsigned long long)sc->chunk_mask + 1);
for (i = 0; i < sc->stripes; i++)
- DMEMIT(" %s " SECTOR_FORMAT, sc->stripe[i].dev->name,
- sc->stripe[i].physical_start);
+ DMEMIT(" %s %llu", sc->stripe[i].dev->name,
+ (unsigned long long)sc->stripe[i].physical_start);
break;
}
return 0;
#include <linux/ctype.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
+#include <linux/mutex.h>
#include <asm/atomic.h>
#define MAX_DEPTH 16
#define CHILDREN_PER_NODE (KEYS_PER_NODE + 1)
struct dm_table {
+ struct mapped_device *md;
atomic_t holders;
/* btree table */
lhs->seg_boundary_mask =
min_not_zero(lhs->seg_boundary_mask, rhs->seg_boundary_mask);
+
+ lhs->no_cluster |= rhs->no_cluster;
}
/*
return 0;
}
-int dm_table_create(struct dm_table **result, int mode, unsigned num_targets)
+int dm_table_create(struct dm_table **result, int mode,
+ unsigned num_targets, struct mapped_device *md)
{
struct dm_table *t = kmalloc(sizeof(*t), GFP_KERNEL);
}
t->mode = mode;
+ t->md = md;
*result = t;
return 0;
}
/*
* Open a device so we can use it as a map destination.
*/
-static int open_dev(struct dm_dev *d, dev_t dev)
+static int open_dev(struct dm_dev *d, dev_t dev, struct mapped_device *md)
{
static char *_claim_ptr = "I belong to device-mapper";
struct block_device *bdev;
bdev = open_by_devnum(dev, d->mode);
if (IS_ERR(bdev))
return PTR_ERR(bdev);
- r = bd_claim(bdev, _claim_ptr);
+ r = bd_claim_by_disk(bdev, _claim_ptr, dm_disk(md));
if (r)
blkdev_put(bdev);
else
/*
* Close a device that we've been using.
*/
-static void close_dev(struct dm_dev *d)
+static void close_dev(struct dm_dev *d, struct mapped_device *md)
{
if (!d->bdev)
return;
- bd_release(d->bdev);
+ bd_release_from_disk(d->bdev, dm_disk(md));
blkdev_put(d->bdev);
d->bdev = NULL;
}
* careful to leave things as they were if we fail to reopen the
* device.
*/
-static int upgrade_mode(struct dm_dev *dd, int new_mode)
+static int upgrade_mode(struct dm_dev *dd, int new_mode, struct mapped_device *md)
{
int r;
struct dm_dev dd_copy;
dd->mode |= new_mode;
dd->bdev = NULL;
- r = open_dev(dd, dev);
+ r = open_dev(dd, dev, md);
if (!r)
- close_dev(&dd_copy);
+ close_dev(&dd_copy, md);
else
*dd = dd_copy;
dd->mode = mode;
dd->bdev = NULL;
- if ((r = open_dev(dd, dev))) {
+ if ((r = open_dev(dd, dev, t->md))) {
kfree(dd);
return r;
}
list_add(&dd->list, &t->devices);
} else if (dd->mode != (mode | dd->mode)) {
- r = upgrade_mode(dd, mode);
+ r = upgrade_mode(dd, mode, t->md);
if (r)
return r;
}
rs->seg_boundary_mask =
min_not_zero(rs->seg_boundary_mask,
q->seg_boundary_mask);
+
+ rs->no_cluster |= !test_bit(QUEUE_FLAG_CLUSTER, &q->queue_flags);
}
return r;
void dm_put_device(struct dm_target *ti, struct dm_dev *dd)
{
if (atomic_dec_and_test(&dd->count)) {
- close_dev(dd);
+ close_dev(dd, ti->table->md);
list_del(&dd->list);
kfree(dd);
}
return r;
}
-static DECLARE_MUTEX(_event_lock);
+static DEFINE_MUTEX(_event_lock);
void dm_table_event_callback(struct dm_table *t,
void (*fn)(void *), void *context)
{
- down(&_event_lock);
+ mutex_lock(&_event_lock);
t->event_fn = fn;
t->event_context = context;
- up(&_event_lock);
+ mutex_unlock(&_event_lock);
}
void dm_table_event(struct dm_table *t)
*/
BUG_ON(in_interrupt());
- down(&_event_lock);
+ mutex_lock(&_event_lock);
if (t->event_fn)
t->event_fn(t->event_context);
- up(&_event_lock);
+ mutex_unlock(&_event_lock);
}
sector_t dm_table_get_size(struct dm_table *t)
q->hardsect_size = t->limits.hardsect_size;
q->max_segment_size = t->limits.max_segment_size;
q->seg_boundary_mask = t->limits.seg_boundary_mask;
+ if (t->limits.no_cluster)
+ q->queue_flags &= ~(1 << QUEUE_FLAG_CLUSTER);
+ else
+ q->queue_flags |= (1 << QUEUE_FLAG_CLUSTER);
+
}
unsigned int dm_table_get_num_targets(struct dm_table *t)
return ret;
}
+struct mapped_device *dm_table_get_md(struct dm_table *t)
+{
+ dm_get(t->md);
+
+ return t->md;
+}
+
EXPORT_SYMBOL(dm_vcalloc);
EXPORT_SYMBOL(dm_get_device);
EXPORT_SYMBOL(dm_put_device);
EXPORT_SYMBOL(dm_table_event);
EXPORT_SYMBOL(dm_table_get_size);
EXPORT_SYMBOL(dm_table_get_mode);
+EXPORT_SYMBOL(dm_table_get_md);
EXPORT_SYMBOL(dm_table_put);
EXPORT_SYMBOL(dm_table_get);
EXPORT_SYMBOL(dm_table_unplug_all);
#include <linux/init.h>
#include <linux/module.h>
+#include <linux/mutex.h>
#include <linux/moduleparam.h>
#include <linux/blkpg.h>
#include <linux/bio.h>
#include <linux/mempool.h>
#include <linux/slab.h>
#include <linux/idr.h>
+#include <linux/hdreg.h>
#include <linux/blktrace_api.h>
static const char *_name = DM_NAME;
request_queue_t *queue;
struct gendisk *disk;
+ char name[16];
void *interface_ptr;
*/
struct super_block *frozen_sb;
struct block_device *suspended_bdev;
+
+ /* forced geometry settings */
+ struct hd_geometry geometry;
};
#define MIN_IOS 256
return 0;
}
+static int dm_blk_getgeo(struct block_device *bdev, struct hd_geometry *geo)
+{
+ struct mapped_device *md = bdev->bd_disk->private_data;
+
+ return dm_get_geometry(md, geo);
+}
+
static inline struct dm_io *alloc_io(struct mapped_device *md)
{
return mempool_alloc(md->io_pool, GFP_NOIO);
return t;
}
+/*
+ * Get the geometry associated with a dm device
+ */
+int dm_get_geometry(struct mapped_device *md, struct hd_geometry *geo)
+{
+ *geo = md->geometry;
+
+ return 0;
+}
+
+/*
+ * Set the geometry of a device.
+ */
+int dm_set_geometry(struct mapped_device *md, struct hd_geometry *geo)
+{
+ sector_t sz = (sector_t)geo->cylinders * geo->heads * geo->sectors;
+
+ if (geo->start > sz) {
+ DMWARN("Start sector is beyond the geometry limits.");
+ return -EINVAL;
+ }
+
+ md->geometry = *geo;
+
+ return 0;
+}
+
/*-----------------------------------------------------------------
* CRUD START:
* A more elegant soln is in the works that uses the queue
/*-----------------------------------------------------------------
* An IDR is used to keep track of allocated minor numbers.
*---------------------------------------------------------------*/
-static DECLARE_MUTEX(_minor_lock);
+static DEFINE_MUTEX(_minor_lock);
static DEFINE_IDR(_minor_idr);
static void free_minor(unsigned int minor)
{
- down(&_minor_lock);
+ mutex_lock(&_minor_lock);
idr_remove(&_minor_idr, minor);
- up(&_minor_lock);
+ mutex_unlock(&_minor_lock);
}
/*
if (minor >= (1 << MINORBITS))
return -EINVAL;
- down(&_minor_lock);
+ mutex_lock(&_minor_lock);
if (idr_find(&_minor_idr, minor)) {
r = -EBUSY;
}
out:
- up(&_minor_lock);
+ mutex_unlock(&_minor_lock);
return r;
}
int r;
unsigned int m;
- down(&_minor_lock);
+ mutex_lock(&_minor_lock);
r = idr_pre_get(&_minor_idr, GFP_KERNEL);
if (!r) {
*minor = m;
out:
- up(&_minor_lock);
+ mutex_unlock(&_minor_lock);
return r;
}
md->disk->private_data = md;
sprintf(md->disk->disk_name, "dm-%d", minor);
add_disk(md->disk);
+ format_dev_t(md->name, MKDEV(_major, minor));
atomic_set(&md->pending, 0);
init_waitqueue_head(&md->wait);
sector_t size;
size = dm_table_get_size(t);
+
+ /*
+ * Wipe any geometry if the size of the table changed.
+ */
+ if (size != get_capacity(md->disk))
+ memset(&md->geometry, 0, sizeof(md->geometry));
+
__set_size(md, size);
if (size == 0)
return 0;
if (MAJOR(dev) != _major || minor >= (1 << MINORBITS))
return NULL;
- down(&_minor_lock);
+ mutex_lock(&_minor_lock);
md = idr_find(&_minor_idr, minor);
if (!md || (dm_disk(md)->first_minor != minor))
md = NULL;
- up(&_minor_lock);
+ mutex_unlock(&_minor_lock);
return md;
}
return md;
}
-void *dm_get_mdptr(dev_t dev)
+void *dm_get_mdptr(struct mapped_device *md)
{
- struct mapped_device *md;
- void *mdptr = NULL;
-
- md = dm_find_md(dev);
- if (md)
- mdptr = md->interface_ptr;
- return mdptr;
+ return md->interface_ptr;
}
void dm_set_mdptr(struct mapped_device *md, void *ptr)
void dm_put(struct mapped_device *md)
{
- struct dm_table *map = dm_get_table(md);
+ struct dm_table *map;
if (atomic_dec_and_test(&md->holders)) {
+ map = dm_get_table(md);
if (!dm_suspended(md)) {
dm_table_presuspend_targets(map);
dm_table_postsuspend_targets(map);
}
__unbind(md);
+ dm_table_put(map);
free_dev(md);
}
-
- dm_table_put(map);
}
/*
{
struct dm_table *map = NULL;
DECLARE_WAITQUEUE(wait, current);
+ struct bio *def;
int r = -EINVAL;
down(&md->suspend_lock);
/* were we interrupted ? */
r = -EINTR;
if (atomic_read(&md->pending)) {
+ clear_bit(DMF_BLOCK_IO, &md->flags);
+ def = bio_list_get(&md->deferred);
+ __flush_deferred_io(md, def);
up_write(&md->io_lock);
unlock_fs(md);
- clear_bit(DMF_BLOCK_IO, &md->flags);
goto out;
}
up_write(&md->io_lock);
static struct block_device_operations dm_blk_dops = {
.open = dm_blk_open,
.release = dm_blk_close,
+ .getgeo = dm_blk_getgeo,
.owner = THIS_MODULE
};
#include <linux/device-mapper.h>
#include <linux/list.h>
#include <linux/blkdev.h>
+#include <linux/hdreg.h>
#define DM_NAME "device-mapper"
#define DMWARN(f, x...) printk(KERN_WARNING DM_NAME ": " f "\n" , ## x)
#define DMEMIT(x...) sz += ((sz >= maxlen) ? \
0 : scnprintf(result + sz, maxlen - sz, x))
-/*
- * FIXME: I think this should be with the definition of sector_t
- * in types.h.
- */
-#ifdef CONFIG_LBD
-#define SECTOR_FORMAT "%llu"
-#else
-#define SECTOR_FORMAT "%lu"
-#endif
-
#define SECTOR_SHIFT 9
/*
int dm_create(struct mapped_device **md);
int dm_create_with_minor(unsigned int minor, struct mapped_device **md);
void dm_set_mdptr(struct mapped_device *md, void *ptr);
-void *dm_get_mdptr(dev_t dev);
+void *dm_get_mdptr(struct mapped_device *md);
struct mapped_device *dm_get_md(dev_t dev);
/*
struct gendisk *dm_disk(struct mapped_device *md);
int dm_suspended(struct mapped_device *md);
+/*
+ * Geometry functions.
+ */
+int dm_get_geometry(struct mapped_device *md, struct hd_geometry *geo);
+int dm_set_geometry(struct mapped_device *md, struct hd_geometry *geo);
+
/*-----------------------------------------------------------------
* Functions for manipulating a table. Tables are also reference
* counted.
*---------------------------------------------------------------*/
-int dm_table_create(struct dm_table **result, int mode, unsigned num_targets);
+int dm_table_create(struct dm_table **result, int mode,
+ unsigned num_targets, struct mapped_device *md);
void dm_table_get(struct dm_table *t);
void dm_table_put(struct dm_table *t);
unsigned int dm_table_get_num_targets(struct dm_table *t);
struct list_head *dm_table_get_devices(struct dm_table *t);
int dm_table_get_mode(struct dm_table *t);
+struct mapped_device *dm_table_get_md(struct dm_table *t);
void dm_table_presuspend_targets(struct dm_table *t);
void dm_table_postsuspend_targets(struct dm_table *t);
void dm_table_resume_targets(struct dm_table *t);
#include <linux/slab.h>
#include <linux/vmalloc.h>
#include <linux/workqueue.h>
+#include <linux/mutex.h>
#include "kcopyd.h"
struct page_list *pages;
unsigned int nr_pages;
unsigned int nr_free_pages;
+
+ wait_queue_head_t destroyq;
+ atomic_t nr_jobs;
};
static struct page_list *alloc_pl(void)
int read_err = job->read_err;
unsigned int write_err = job->write_err;
kcopyd_notify_fn fn = job->fn;
+ struct kcopyd_client *kc = job->kc;
- kcopyd_put_pages(job->kc, job->pages);
+ kcopyd_put_pages(kc, job->pages);
mempool_free(job, _job_pool);
fn(read_err, write_err, context);
+
+ if (atomic_dec_and_test(&kc->nr_jobs))
+ wake_up(&kc->destroyq);
+
return 0;
}
*/
static void dispatch_job(struct kcopyd_job *job)
{
+ atomic_inc(&job->kc->nr_jobs);
push(&_pages_jobs, job);
wake();
}
/*-----------------------------------------------------------------
* Unit setup
*---------------------------------------------------------------*/
-static DECLARE_MUTEX(_client_lock);
+static DEFINE_MUTEX(_client_lock);
static LIST_HEAD(_clients);
static void client_add(struct kcopyd_client *kc)
{
- down(&_client_lock);
+ mutex_lock(&_client_lock);
list_add(&kc->list, &_clients);
- up(&_client_lock);
+ mutex_unlock(&_client_lock);
}
static void client_del(struct kcopyd_client *kc)
{
- down(&_client_lock);
+ mutex_lock(&_client_lock);
list_del(&kc->list);
- up(&_client_lock);
+ mutex_unlock(&_client_lock);
}
static DEFINE_MUTEX(kcopyd_init_lock);
return r;
}
+ init_waitqueue_head(&kc->destroyq);
+ atomic_set(&kc->nr_jobs, 0);
+
client_add(kc);
*result = kc;
return 0;
void kcopyd_client_destroy(struct kcopyd_client *kc)
{
+ /* Wait for completion of all jobs submitted by this client. */
+ wait_event(kc->destroyq, !atomic_read(&kc->nr_jobs));
+
dm_io_put(kc->nr_pages);
client_free_pages(kc);
client_del(kc);
#include <linux/buffer_head.h> /* for invalidate_bdev */
#include <linux/suspend.h>
#include <linux/poll.h>
+#include <linux/mutex.h>
#include <linux/init.h>
*/
static DECLARE_WAIT_QUEUE_HEAD(md_event_waiters);
static atomic_t md_event_count;
-static void md_new_event(mddev_t *mddev)
+void md_new_event(mddev_t *mddev)
{
atomic_inc(&md_event_count);
wake_up(&md_event_waiters);
}
+EXPORT_SYMBOL_GPL(md_new_event);
/*
* Enables to iterate over all existing md arrays
else
new->md_minor = MINOR(unit) >> MdpMinorShift;
- init_MUTEX(&new->reconfig_sem);
+ mutex_init(&new->reconfig_mutex);
INIT_LIST_HEAD(&new->disks);
INIT_LIST_HEAD(&new->all_mddevs);
init_timer(&new->safemode_timer);
kfree(new);
return NULL;
}
+ set_bit(QUEUE_FLAG_CLUSTER, &new->queue->queue_flags);
blk_queue_make_request(new->queue, md_fail_request);
static inline int mddev_lock(mddev_t * mddev)
{
- return down_interruptible(&mddev->reconfig_sem);
+ return mutex_lock_interruptible(&mddev->reconfig_mutex);
}
static inline void mddev_lock_uninterruptible(mddev_t * mddev)
{
- down(&mddev->reconfig_sem);
+ mutex_lock(&mddev->reconfig_mutex);
}
static inline int mddev_trylock(mddev_t * mddev)
{
- return down_trylock(&mddev->reconfig_sem);
+ return mutex_trylock(&mddev->reconfig_mutex);
}
static inline void mddev_unlock(mddev_t * mddev)
{
- up(&mddev->reconfig_sem);
+ mutex_unlock(&mddev->reconfig_mutex);
md_wakeup_thread(mddev->thread);
}
}
if (sb->major_version != 0 ||
- sb->minor_version != 90) {
+ sb->minor_version < 90 ||
+ sb->minor_version > 91) {
printk(KERN_WARNING "Bad version number %d.%d on %s\n",
sb->major_version, sb->minor_version,
b);
mddev->bitmap_offset = 0;
mddev->default_bitmap_offset = MD_SB_BYTES >> 9;
+ if (mddev->minor_version >= 91) {
+ mddev->reshape_position = sb->reshape_position;
+ mddev->delta_disks = sb->delta_disks;
+ mddev->new_level = sb->new_level;
+ mddev->new_layout = sb->new_layout;
+ mddev->new_chunk = sb->new_chunk;
+ } else {
+ mddev->reshape_position = MaxSector;
+ mddev->delta_disks = 0;
+ mddev->new_level = mddev->level;
+ mddev->new_layout = mddev->layout;
+ mddev->new_chunk = mddev->chunk_size;
+ }
+
if (sb->state & (1<<MD_SB_CLEAN))
mddev->recovery_cp = MaxSector;
else {
if (sb->state & (1<<MD_SB_BITMAP_PRESENT) &&
mddev->bitmap_file == NULL) {
- if (mddev->level != 1 && mddev->level != 5 && mddev->level != 6
+ if (mddev->level != 1 && mddev->level != 4
+ && mddev->level != 5 && mddev->level != 6
&& mddev->level != 10) {
/* FIXME use a better test */
printk(KERN_WARNING "md: bitmaps not supported for this level.\n");
sb->md_magic = MD_SB_MAGIC;
sb->major_version = mddev->major_version;
- sb->minor_version = mddev->minor_version;
sb->patch_version = mddev->patch_version;
sb->gvalid_words = 0; /* ignored */
memcpy(&sb->set_uuid0, mddev->uuid+0, 4);
sb->events_hi = (mddev->events>>32);
sb->events_lo = (u32)mddev->events;
+ if (mddev->reshape_position == MaxSector)
+ sb->minor_version = 90;
+ else {
+ sb->minor_version = 91;
+ sb->reshape_position = mddev->reshape_position;
+ sb->new_level = mddev->new_level;
+ sb->delta_disks = mddev->delta_disks;
+ sb->new_layout = mddev->new_layout;
+ sb->new_chunk = mddev->new_chunk;
+ }
+ mddev->minor_version = sb->minor_version;
if (mddev->in_sync)
{
sb->recovery_cp = mddev->recovery_cp;
d->raid_disk = rdev2->raid_disk;
else
d->raid_disk = rdev2->desc_nr; /* compatibility */
- if (test_bit(Faulty, &rdev2->flags)) {
+ if (test_bit(Faulty, &rdev2->flags))
d->state = (1<<MD_DISK_FAULTY);
- failed++;
- } else if (test_bit(In_sync, &rdev2->flags)) {
+ else if (test_bit(In_sync, &rdev2->flags)) {
d->state = (1<<MD_DISK_ACTIVE);
d->state |= (1<<MD_DISK_SYNC);
active++;
}
mddev->bitmap_offset = (__s32)le32_to_cpu(sb->bitmap_offset);
}
+ if ((le32_to_cpu(sb->feature_map) & MD_FEATURE_RESHAPE_ACTIVE)) {
+ mddev->reshape_position = le64_to_cpu(sb->reshape_position);
+ mddev->delta_disks = le32_to_cpu(sb->delta_disks);
+ mddev->new_level = le32_to_cpu(sb->new_level);
+ mddev->new_layout = le32_to_cpu(sb->new_layout);
+ mddev->new_chunk = le32_to_cpu(sb->new_chunk)<<9;
+ } else {
+ mddev->reshape_position = MaxSector;
+ mddev->delta_disks = 0;
+ mddev->new_level = mddev->level;
+ mddev->new_layout = mddev->layout;
+ mddev->new_chunk = mddev->chunk_size;
+ }
+
} else if (mddev->pers == NULL) {
/* Insist of good event counter while assembling */
__u64 ev1 = le64_to_cpu(sb->events);
sb->bitmap_offset = cpu_to_le32((__u32)mddev->bitmap_offset);
sb->feature_map = cpu_to_le32(MD_FEATURE_BITMAP_OFFSET);
}
+ if (mddev->reshape_position != MaxSector) {
+ sb->feature_map |= cpu_to_le32(MD_FEATURE_RESHAPE_ACTIVE);
+ sb->reshape_position = cpu_to_le64(mddev->reshape_position);
+ sb->new_layout = cpu_to_le32(mddev->new_layout);
+ sb->delta_disks = cpu_to_le32(mddev->delta_disks);
+ sb->new_level = cpu_to_le32(mddev->new_level);
+ sb->new_chunk = cpu_to_le32(mddev->new_chunk>>9);
+ }
max_dev = 0;
ITERATE_RDEV(mddev,rdev2,tmp)
else
ko = &rdev->bdev->bd_disk->kobj;
sysfs_create_link(&rdev->kobj, ko, "block");
+ bd_claim_by_disk(rdev->bdev, rdev, mddev->gendisk);
return 0;
}
MD_BUG();
return;
}
+ bd_release_from_disk(rdev->bdev, rdev->mddev->gendisk);
list_del_init(&rdev->same_set);
printk(KERN_INFO "md: unbind<%s>\n", bdevname(rdev->bdev,b));
rdev->mddev = NULL;
}
}
-static void md_update_sb(mddev_t * mddev)
+void md_update_sb(mddev_t * mddev)
{
int err;
struct list_head *tmp;
wake_up(&mddev->sb_wait);
}
+EXPORT_SYMBOL_GPL(md_update_sb);
/* words written to sysfs files may, or my not, be \n terminated.
* We want to accept with case. For this we use cmd_match.
char *type = "idle";
if (test_bit(MD_RECOVERY_RUNNING, &mddev->recovery) ||
test_bit(MD_RECOVERY_NEEDED, &mddev->recovery)) {
- if (test_bit(MD_RECOVERY_SYNC, &mddev->recovery)) {
+ if (test_bit(MD_RECOVERY_RESHAPE, &mddev->recovery))
+ type = "reshape";
+ else if (test_bit(MD_RECOVERY_SYNC, &mddev->recovery)) {
if (!test_bit(MD_RECOVERY_REQUESTED, &mddev->recovery))
type = "resync";
else if (test_bit(MD_RECOVERY_CHECK, &mddev->recovery))
return -EBUSY;
else if (cmd_match(page, "resync") || cmd_match(page, "recover"))
set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
- else {
+ else if (cmd_match(page, "reshape")) {
+ int err;
+ if (mddev->pers->start_reshape == NULL)
+ return -EINVAL;
+ err = mddev->pers->start_reshape(mddev);
+ if (err)
+ return err;
+ } else {
if (cmd_match(page, "check"))
set_bit(MD_RECOVERY_CHECK, &mddev->recovery);
else if (cmd_match(page, "repair"))
static struct md_sysfs_entry
md_sync_completed = __ATTR_RO(sync_completed);
+static ssize_t
+suspend_lo_show(mddev_t *mddev, char *page)
+{
+ return sprintf(page, "%llu\n", (unsigned long long)mddev->suspend_lo);
+}
+
+static ssize_t
+suspend_lo_store(mddev_t *mddev, const char *buf, size_t len)
+{
+ char *e;
+ unsigned long long new = simple_strtoull(buf, &e, 10);
+
+ if (mddev->pers->quiesce == NULL)
+ return -EINVAL;
+ if (buf == e || (*e && *e != '\n'))
+ return -EINVAL;
+ if (new >= mddev->suspend_hi ||
+ (new > mddev->suspend_lo && new < mddev->suspend_hi)) {
+ mddev->suspend_lo = new;
+ mddev->pers->quiesce(mddev, 2);
+ return len;
+ } else
+ return -EINVAL;
+}
+static struct md_sysfs_entry md_suspend_lo =
+__ATTR(suspend_lo, S_IRUGO|S_IWUSR, suspend_lo_show, suspend_lo_store);
+
+
+static ssize_t
+suspend_hi_show(mddev_t *mddev, char *page)
+{
+ return sprintf(page, "%llu\n", (unsigned long long)mddev->suspend_hi);
+}
+
+static ssize_t
+suspend_hi_store(mddev_t *mddev, const char *buf, size_t len)
+{
+ char *e;
+ unsigned long long new = simple_strtoull(buf, &e, 10);
+
+ if (mddev->pers->quiesce == NULL)
+ return -EINVAL;
+ if (buf == e || (*e && *e != '\n'))
+ return -EINVAL;
+ if ((new <= mddev->suspend_lo && mddev->suspend_lo >= mddev->suspend_hi) ||
+ (new > mddev->suspend_lo && new > mddev->suspend_hi)) {
+ mddev->suspend_hi = new;
+ mddev->pers->quiesce(mddev, 1);
+ mddev->pers->quiesce(mddev, 0);
+ return len;
+ } else
+ return -EINVAL;
+}
+static struct md_sysfs_entry md_suspend_hi =
+__ATTR(suspend_hi, S_IRUGO|S_IWUSR, suspend_hi_show, suspend_hi_store);
+
+
static struct attribute *md_default_attrs[] = {
&md_level.attr,
&md_raid_disks.attr,
&md_sync_max.attr,
&md_sync_speed.attr,
&md_sync_completed.attr,
+ &md_suspend_lo.attr,
+ &md_suspend_hi.attr,
NULL,
};
static struct attribute_group md_redundancy_group = {
static struct kobject *md_probe(dev_t dev, int *part, void *data)
{
- static DECLARE_MUTEX(disks_sem);
+ static DEFINE_MUTEX(disks_mutex);
mddev_t *mddev = mddev_find(dev);
struct gendisk *disk;
int partitioned = (MAJOR(dev) != MD_MAJOR);
if (!mddev)
return NULL;
- down(&disks_sem);
+ mutex_lock(&disks_mutex);
if (mddev->gendisk) {
- up(&disks_sem);
+ mutex_unlock(&disks_mutex);
mddev_put(mddev);
return NULL;
}
disk = alloc_disk(1 << shift);
if (!disk) {
- up(&disks_sem);
+ mutex_unlock(&disks_mutex);
mddev_put(mddev);
return NULL;
}
disk->queue = mddev->queue;
add_disk(disk);
mddev->gendisk = disk;
- up(&disks_sem);
+ mutex_unlock(&disks_mutex);
mddev->kobj.parent = &disk->kobj;
mddev->kobj.k_name = NULL;
snprintf(mddev->kobj.name, KOBJ_NAME_LEN, "%s", "md");
mddev->level = pers->level;
strlcpy(mddev->clevel, pers->name, sizeof(mddev->clevel));
+ if (mddev->reshape_position != MaxSector &&
+ pers->start_reshape == NULL) {
+ /* This personality cannot handle reshaping... */
+ mddev->pers = NULL;
+ module_put(pers->owner);
+ return -EINVAL;
+ }
+
mddev->recovery = 0;
mddev->resync_max_sectors = mddev->size << 1; /* may be over-ridden by personality */
mddev->barriers_work = 1;
*/
static void autorun_devices(int part)
{
- struct list_head candidates;
struct list_head *tmp;
mdk_rdev_t *rdev0, *rdev;
mddev_t *mddev;
printk(KERN_INFO "md: autorun ...\n");
while (!list_empty(&pending_raid_disks)) {
dev_t dev;
+ LIST_HEAD(candidates);
rdev0 = list_entry(pending_raid_disks.next,
mdk_rdev_t, same_set);
mddev->default_bitmap_offset = MD_SB_BYTES >> 9;
mddev->bitmap_offset = 0;
+ mddev->reshape_position = MaxSector;
+
/*
* Generate a 128 bit UUID
*/
get_random_bytes(mddev->uuid, 16);
+ mddev->new_level = mddev->level;
+ mddev->new_chunk = mddev->chunk_size;
+ mddev->new_layout = mddev->layout;
+ mddev->delta_disks = 0;
+
return 0;
}
mdk_rdev_t * rdev;
int rv;
struct list_head *tmp;
+ int fit = (size == 0);
if (mddev->pers->resize == NULL)
return -EINVAL;
return -EBUSY;
ITERATE_RDEV(mddev,rdev,tmp) {
sector_t avail;
- int fit = (size == 0);
if (rdev->sb_offset > rdev->data_offset)
avail = (rdev->sb_offset*2) - rdev->data_offset;
else
{
int rv;
/* change the number of raid disks */
- if (mddev->pers->reshape == NULL)
+ if (mddev->pers->check_reshape == NULL)
return -EINVAL;
if (raid_disks <= 0 ||
raid_disks >= mddev->max_disks)
return -EINVAL;
- if (mddev->sync_thread)
+ if (mddev->sync_thread || mddev->reshape_position != MaxSector)
return -EBUSY;
- rv = mddev->pers->reshape(mddev, raid_disks);
+ mddev->delta_disks = raid_disks - mddev->raid_disks;
+
+ rv = mddev->pers->check_reshape(mddev);
return rv;
}
static void status_resync(struct seq_file *seq, mddev_t * mddev)
{
- unsigned long max_blocks, resync, res, dt, db, rt;
+ sector_t max_blocks, resync, res;
+ unsigned long dt, db, rt;
+ int scale;
+ unsigned int per_milli;
resync = (mddev->curr_resync - atomic_read(&mddev->recovery_active))/2;
MD_BUG();
return;
}
- res = (resync/1024)*1000/(max_blocks/1024 + 1);
+ /* Pick 'scale' such that (resync>>scale)*1000 will fit
+ * in a sector_t, and (max_blocks>>scale) will fit in a
+ * u32, as those are the requirements for sector_div.
+ * Thus 'scale' must be at least 10
+ */
+ scale = 10;
+ if (sizeof(sector_t) > sizeof(unsigned long)) {
+ while ( max_blocks/2 > (1ULL<<(scale+32)))
+ scale++;
+ }
+ res = (resync>>scale)*1000;
+ sector_div(res, (u32)((max_blocks>>scale)+1));
+
+ per_milli = res;
{
- int i, x = res/50, y = 20-x;
+ int i, x = per_milli/50, y = 20-x;
seq_printf(seq, "[");
for (i = 0; i < x; i++)
seq_printf(seq, "=");
seq_printf(seq, ".");
seq_printf(seq, "] ");
}
- seq_printf(seq, " %s =%3lu.%lu%% (%lu/%lu)",
+ seq_printf(seq, " %s =%3u.%u%% (%llu/%llu)",
+ (test_bit(MD_RECOVERY_RESHAPE, &mddev->recovery)?
+ "reshape" :
(test_bit(MD_RECOVERY_SYNC, &mddev->recovery) ?
- "resync" : "recovery"),
- res/10, res % 10, resync, max_blocks);
+ "resync" : "recovery")),
+ per_milli/10, per_milli % 10,
+ (unsigned long long) resync,
+ (unsigned long long) max_blocks);
/*
* We do not want to overflow, so the order of operands and
dt = ((jiffies - mddev->resync_mark) / HZ);
if (!dt) dt++;
db = resync - (mddev->resync_mark_cnt/2);
- rt = (dt * ((max_blocks-resync) / (db/100+1)))/100;
+ rt = (dt * ((unsigned long)(max_blocks-resync) / (db/100+1)))/100;
seq_printf(seq, " finish=%lu.%lumin", rt / 60, (rt % 60)/6);
#define SYNC_MARKS 10
#define SYNC_MARK_STEP (3*HZ)
-static void md_do_sync(mddev_t *mddev)
+void md_do_sync(mddev_t *mddev)
{
mddev_t *mddev2;
unsigned int currspeed = 0,
*/
max_sectors = mddev->resync_max_sectors;
mddev->resync_mismatches = 0;
- } else
+ } else if (test_bit(MD_RECOVERY_RESHAPE, &mddev->recovery))
+ max_sectors = mddev->size << 1;
+ else
/* recovery follows the physical size of devices */
max_sectors = mddev->size << 1;
mddev->pers->sync_request(mddev, max_sectors, &skipped, 1);
if (!test_bit(MD_RECOVERY_ERR, &mddev->recovery) &&
+ test_bit(MD_RECOVERY_SYNC, &mddev->recovery) &&
+ !test_bit(MD_RECOVERY_CHECK, &mddev->recovery) &&
mddev->curr_resync > 2 &&
mddev->curr_resync >= mddev->recovery_cp) {
if (test_bit(MD_RECOVERY_INTR, &mddev->recovery)) {
set_bit(MD_RECOVERY_DONE, &mddev->recovery);
md_wakeup_thread(mddev->thread);
}
+EXPORT_SYMBOL_GPL(md_do_sync);
/*
))
return;
- if (mddev_trylock(mddev)==0) {
+ if (mddev_trylock(mddev)) {
int spares =0;
spin_lock_irq(&mddev->write_lock);
printk(KERN_INFO "md: stopping all md devices.\n");
ITERATE_MDDEV(mddev,tmp)
- if (mddev_trylock(mddev)==0)
+ if (mddev_trylock(mddev))
do_md_stop (mddev, 1);
/*
* certain more exotic SCSI devices are known to be
clear_bit(R1BIO_BarrierRetry, &r1_bio->state);
clear_bit(R1BIO_Barrier, &r1_bio->state);
for (i=0; i < conf->raid_disks; i++)
+ if (r1_bio->bios[i])
+ atomic_inc(&r1_bio->remaining);
+ for (i=0; i < conf->raid_disks; i++)
if (r1_bio->bios[i]) {
struct bio_vec *bvec;
int j;
mdname(mddev), mddev->level);
goto out;
}
+ if (mddev->reshape_position != MaxSector) {
+ printk("raid1: %s: reshape_position set but not supported\n",
+ mdname(mddev));
+ goto out;
+ }
/*
* copy the already verified devices into our private RAID1
* bookkeeping area. [whatever we allocate in run(),
return 0;
}
-static int raid1_reshape(mddev_t *mddev, int raid_disks)
+static int raid1_reshape(mddev_t *mddev)
{
/* We need to:
* 1/ resize the r1bio_pool
struct pool_info *newpoolinfo;
mirror_info_t *newmirrors;
conf_t *conf = mddev_to_conf(mddev);
- int cnt;
+ int cnt, raid_disks;
int d, d2;
+ /* Cannot change chunk_size, layout, or level */
+ if (mddev->chunk_size != mddev->new_chunk ||
+ mddev->layout != mddev->new_layout ||
+ mddev->level != mddev->new_level) {
+ mddev->new_chunk = mddev->chunk_size;
+ mddev->new_layout = mddev->layout;
+ mddev->new_level = mddev->level;
+ return -EINVAL;
+ }
+
+ raid_disks = mddev->raid_disks + mddev->delta_disks;
+
if (raid_disks < conf->raid_disks) {
cnt=0;
for (d= 0; d < conf->raid_disks; d++)
mddev->degraded += (raid_disks - conf->raid_disks);
conf->raid_disks = mddev->raid_disks = raid_disks;
+ mddev->delta_disks = 0;
conf->last_used = 0; /* just make sure it is in-range */
lower_barrier(conf);
.spare_active = raid1_spare_active,
.sync_request = sync_request,
.resize = raid1_resize,
- .reshape = raid1_reshape,
+ .check_reshape = raid1_reshape,
.quiesce = raid1_quiesce,
};
#include <linux/raid/raid5.h>
#include <linux/highmem.h>
#include <linux/bitops.h>
+#include <linux/kthread.h>
#include <asm/atomic.h>
#include <linux/raid/bitmap.h>
if (atomic_read(&conf->preread_active_stripes) < IO_THRESHOLD)
md_wakeup_thread(conf->mddev->thread);
}
- list_add_tail(&sh->lru, &conf->inactive_list);
atomic_dec(&conf->active_stripes);
- if (!conf->inactive_blocked ||
- atomic_read(&conf->active_stripes) < (conf->max_nr_stripes*3/4))
+ if (!test_bit(STRIPE_EXPANDING, &sh->state)) {
+ list_add_tail(&sh->lru, &conf->inactive_list);
wake_up(&conf->wait_for_stripe);
+ }
}
}
}
static void raid5_build_block (struct stripe_head *sh, int i);
-static void init_stripe(struct stripe_head *sh, sector_t sector, int pd_idx)
+static void init_stripe(struct stripe_head *sh, sector_t sector, int pd_idx, int disks)
{
raid5_conf_t *conf = sh->raid_conf;
- int disks = conf->raid_disks, i;
+ int i;
if (atomic_read(&sh->count) != 0)
BUG();
sh->pd_idx = pd_idx;
sh->state = 0;
- for (i=disks; i--; ) {
+ sh->disks = disks;
+
+ for (i = sh->disks; i--; ) {
struct r5dev *dev = &sh->dev[i];
if (dev->toread || dev->towrite || dev->written ||
insert_hash(conf, sh);
}
-static struct stripe_head *__find_stripe(raid5_conf_t *conf, sector_t sector)
+static struct stripe_head *__find_stripe(raid5_conf_t *conf, sector_t sector, int disks)
{
struct stripe_head *sh;
struct hlist_node *hn;
CHECK_DEVLOCK();
PRINTK("__find_stripe, sector %llu\n", (unsigned long long)sector);
hlist_for_each_entry(sh, hn, stripe_hash(conf, sector), hash)
- if (sh->sector == sector)
+ if (sh->sector == sector && sh->disks == disks)
return sh;
PRINTK("__stripe %llu not in cache\n", (unsigned long long)sector);
return NULL;
static void unplug_slaves(mddev_t *mddev);
static void raid5_unplug_device(request_queue_t *q);
-static struct stripe_head *get_active_stripe(raid5_conf_t *conf, sector_t sector,
- int pd_idx, int noblock)
+static struct stripe_head *get_active_stripe(raid5_conf_t *conf, sector_t sector, int disks,
+ int pd_idx, int noblock)
{
struct stripe_head *sh;
wait_event_lock_irq(conf->wait_for_stripe,
conf->quiesce == 0,
conf->device_lock, /* nothing */);
- sh = __find_stripe(conf, sector);
+ sh = __find_stripe(conf, sector, disks);
if (!sh) {
if (!conf->inactive_blocked)
sh = get_free_stripe(conf);
< (conf->max_nr_stripes *3/4)
|| !conf->inactive_blocked),
conf->device_lock,
- unplug_slaves(conf->mddev);
+ unplug_slaves(conf->mddev)
);
conf->inactive_blocked = 0;
} else
- init_stripe(sh, sector, pd_idx);
+ init_stripe(sh, sector, pd_idx, disks);
} else {
if (atomic_read(&sh->count)) {
if (!list_empty(&sh->lru))
} else {
if (!test_bit(STRIPE_HANDLE, &sh->state))
atomic_inc(&conf->active_stripes);
- if (list_empty(&sh->lru))
- BUG();
- list_del_init(&sh->lru);
+ if (!list_empty(&sh->lru))
+ list_del_init(&sh->lru);
}
}
} while (sh == NULL);
kmem_cache_free(conf->slab_cache, sh);
return 0;
}
+ sh->disks = conf->raid_disks;
/* we just created an active stripe so... */
atomic_set(&sh->count, 1);
atomic_inc(&conf->active_stripes);
kmem_cache_t *sc;
int devs = conf->raid_disks;
- sprintf(conf->cache_name, "raid5/%s", mdname(conf->mddev));
-
- sc = kmem_cache_create(conf->cache_name,
+ sprintf(conf->cache_name[0], "raid5/%s", mdname(conf->mddev));
+ sprintf(conf->cache_name[1], "raid5/%s-alt", mdname(conf->mddev));
+ conf->active_name = 0;
+ sc = kmem_cache_create(conf->cache_name[conf->active_name],
sizeof(struct stripe_head)+(devs-1)*sizeof(struct r5dev),
0, 0, NULL, NULL);
if (!sc)
return 1;
conf->slab_cache = sc;
+ conf->pool_size = devs;
while (num--) {
if (!grow_one_stripe(conf))
return 1;
return 0;
}
+#ifdef CONFIG_MD_RAID5_RESHAPE
+static int resize_stripes(raid5_conf_t *conf, int newsize)
+{
+ /* Make all the stripes able to hold 'newsize' devices.
+ * New slots in each stripe get 'page' set to a new page.
+ *
+ * This happens in stages:
+ * 1/ create a new kmem_cache and allocate the required number of
+ * stripe_heads.
+ * 2/ gather all the old stripe_heads and tranfer the pages across
+ * to the new stripe_heads. This will have the side effect of
+ * freezing the array as once all stripe_heads have been collected,
+ * no IO will be possible. Old stripe heads are freed once their
+ * pages have been transferred over, and the old kmem_cache is
+ * freed when all stripes are done.
+ * 3/ reallocate conf->disks to be suitable bigger. If this fails,
+ * we simple return a failre status - no need to clean anything up.
+ * 4/ allocate new pages for the new slots in the new stripe_heads.
+ * If this fails, we don't bother trying the shrink the
+ * stripe_heads down again, we just leave them as they are.
+ * As each stripe_head is processed the new one is released into
+ * active service.
+ *
+ * Once step2 is started, we cannot afford to wait for a write,
+ * so we use GFP_NOIO allocations.
+ */
+ struct stripe_head *osh, *nsh;
+ LIST_HEAD(newstripes);
+ struct disk_info *ndisks;
+ int err = 0;
+ kmem_cache_t *sc;
+ int i;
+
+ if (newsize <= conf->pool_size)
+ return 0; /* never bother to shrink */
+
+ /* Step 1 */
+ sc = kmem_cache_create(conf->cache_name[1-conf->active_name],
+ sizeof(struct stripe_head)+(newsize-1)*sizeof(struct r5dev),
+ 0, 0, NULL, NULL);
+ if (!sc)
+ return -ENOMEM;
+
+ for (i = conf->max_nr_stripes; i; i--) {
+ nsh = kmem_cache_alloc(sc, GFP_KERNEL);
+ if (!nsh)
+ break;
+
+ memset(nsh, 0, sizeof(*nsh) + (newsize-1)*sizeof(struct r5dev));
+
+ nsh->raid_conf = conf;
+ spin_lock_init(&nsh->lock);
+
+ list_add(&nsh->lru, &newstripes);
+ }
+ if (i) {
+ /* didn't get enough, give up */
+ while (!list_empty(&newstripes)) {
+ nsh = list_entry(newstripes.next, struct stripe_head, lru);
+ list_del(&nsh->lru);
+ kmem_cache_free(sc, nsh);
+ }
+ kmem_cache_destroy(sc);
+ return -ENOMEM;
+ }
+ /* Step 2 - Must use GFP_NOIO now.
+ * OK, we have enough stripes, start collecting inactive
+ * stripes and copying them over
+ */
+ list_for_each_entry(nsh, &newstripes, lru) {
+ spin_lock_irq(&conf->device_lock);
+ wait_event_lock_irq(conf->wait_for_stripe,
+ !list_empty(&conf->inactive_list),
+ conf->device_lock,
+ unplug_slaves(conf->mddev)
+ );
+ osh = get_free_stripe(conf);
+ spin_unlock_irq(&conf->device_lock);
+ atomic_set(&nsh->count, 1);
+ for(i=0; i<conf->pool_size; i++)
+ nsh->dev[i].page = osh->dev[i].page;
+ for( ; i<newsize; i++)
+ nsh->dev[i].page = NULL;
+ kmem_cache_free(conf->slab_cache, osh);
+ }
+ kmem_cache_destroy(conf->slab_cache);
+
+ /* Step 3.
+ * At this point, we are holding all the stripes so the array
+ * is completely stalled, so now is a good time to resize
+ * conf->disks.
+ */
+ ndisks = kzalloc(newsize * sizeof(struct disk_info), GFP_NOIO);
+ if (ndisks) {
+ for (i=0; i<conf->raid_disks; i++)
+ ndisks[i] = conf->disks[i];
+ kfree(conf->disks);
+ conf->disks = ndisks;
+ } else
+ err = -ENOMEM;
+
+ /* Step 4, return new stripes to service */
+ while(!list_empty(&newstripes)) {
+ nsh = list_entry(newstripes.next, struct stripe_head, lru);
+ list_del_init(&nsh->lru);
+ for (i=conf->raid_disks; i < newsize; i++)
+ if (nsh->dev[i].page == NULL) {
+ struct page *p = alloc_page(GFP_NOIO);
+ nsh->dev[i].page = p;
+ if (!p)
+ err = -ENOMEM;
+ }
+ release_stripe(nsh);
+ }
+ /* critical section pass, GFP_NOIO no longer needed */
+
+ conf->slab_cache = sc;
+ conf->active_name = 1-conf->active_name;
+ conf->pool_size = newsize;
+ return err;
+}
+#endif
+
static int drop_one_stripe(raid5_conf_t *conf)
{
struct stripe_head *sh;
return 0;
if (atomic_read(&sh->count))
BUG();
- shrink_buffers(sh, conf->raid_disks);
+ shrink_buffers(sh, conf->pool_size);
kmem_cache_free(conf->slab_cache, sh);
atomic_dec(&conf->active_stripes);
return 1;
{
struct stripe_head *sh = bi->bi_private;
raid5_conf_t *conf = sh->raid_conf;
- int disks = conf->raid_disks, i;
+ int disks = sh->disks, i;
int uptodate = test_bit(BIO_UPTODATE, &bi->bi_flags);
if (bi->bi_size)
{
struct stripe_head *sh = bi->bi_private;
raid5_conf_t *conf = sh->raid_conf;
- int disks = conf->raid_disks, i;
+ int disks = sh->disks, i;
unsigned long flags;
int uptodate = test_bit(BIO_UPTODATE, &bi->bi_flags);
static sector_t compute_blocknr(struct stripe_head *sh, int i)
{
raid5_conf_t *conf = sh->raid_conf;
- int raid_disks = conf->raid_disks, data_disks = raid_disks - 1;
+ int raid_disks = sh->disks, data_disks = raid_disks - 1;
sector_t new_sector = sh->sector, check;
int sectors_per_chunk = conf->chunk_size >> 9;
sector_t stripe;
static void compute_block(struct stripe_head *sh, int dd_idx)
{
- raid5_conf_t *conf = sh->raid_conf;
- int i, count, disks = conf->raid_disks;
+ int i, count, disks = sh->disks;
void *ptr[MAX_XOR_BLOCKS], *p;
PRINTK("compute_block, stripe %llu, idx %d\n",
static void compute_parity(struct stripe_head *sh, int method)
{
raid5_conf_t *conf = sh->raid_conf;
- int i, pd_idx = sh->pd_idx, disks = conf->raid_disks, count;
+ int i, pd_idx = sh->pd_idx, disks = sh->disks, count;
void *ptr[MAX_XOR_BLOCKS];
struct bio *chosen;
return 0;
}
+static void end_reshape(raid5_conf_t *conf);
+
+static int stripe_to_pdidx(sector_t stripe, raid5_conf_t *conf, int disks)
+{
+ int sectors_per_chunk = conf->chunk_size >> 9;
+ sector_t x = stripe;
+ int pd_idx, dd_idx;
+ int chunk_offset = sector_div(x, sectors_per_chunk);
+ stripe = x;
+ raid5_compute_sector(stripe*(disks-1)*sectors_per_chunk
+ + chunk_offset, disks, disks-1, &dd_idx, &pd_idx, conf);
+ return pd_idx;
+}
+
/*
* handle_stripe - do things to a stripe.
static void handle_stripe(struct stripe_head *sh)
{
raid5_conf_t *conf = sh->raid_conf;
- int disks = conf->raid_disks;
+ int disks = sh->disks;
struct bio *return_bi= NULL;
struct bio *bi;
int i;
- int syncing;
+ int syncing, expanding, expanded;
int locked=0, uptodate=0, to_read=0, to_write=0, failed=0, written=0;
int non_overwrite = 0;
int failed_num=0;
clear_bit(STRIPE_DELAYED, &sh->state);
syncing = test_bit(STRIPE_SYNCING, &sh->state);
+ expanding = test_bit(STRIPE_EXPAND_SOURCE, &sh->state);
+ expanded = test_bit(STRIPE_EXPAND_READY, &sh->state);
/* Now to look around and see what can be done */
rcu_read_lock();
* parity, or to satisfy requests
* or to load a block that is being partially written.
*/
- if (to_read || non_overwrite || (syncing && (uptodate < disks))) {
+ if (to_read || non_overwrite || (syncing && (uptodate < disks)) || expanding) {
for (i=disks; i--;) {
dev = &sh->dev[i];
if (!test_bit(R5_LOCKED, &dev->flags) && !test_bit(R5_UPTODATE, &dev->flags) &&
(dev->toread ||
(dev->towrite && !test_bit(R5_OVERWRITE, &dev->flags)) ||
syncing ||
+ expanding ||
(failed && (sh->dev[failed_num].toread ||
(sh->dev[failed_num].towrite && !test_bit(R5_OVERWRITE, &sh->dev[failed_num].flags))))
)
set_bit(R5_Wantwrite, &dev->flags);
set_bit(R5_ReWrite, &dev->flags);
set_bit(R5_LOCKED, &dev->flags);
+ locked++;
} else {
/* let's read it back */
set_bit(R5_Wantread, &dev->flags);
set_bit(R5_LOCKED, &dev->flags);
+ locked++;
}
}
+ if (expanded && test_bit(STRIPE_EXPANDING, &sh->state)) {
+ /* Need to write out all blocks after computing parity */
+ sh->disks = conf->raid_disks;
+ sh->pd_idx = stripe_to_pdidx(sh->sector, conf, conf->raid_disks);
+ compute_parity(sh, RECONSTRUCT_WRITE);
+ for (i= conf->raid_disks; i--;) {
+ set_bit(R5_LOCKED, &sh->dev[i].flags);
+ locked++;
+ set_bit(R5_Wantwrite, &sh->dev[i].flags);
+ }
+ clear_bit(STRIPE_EXPANDING, &sh->state);
+ } else if (expanded) {
+ clear_bit(STRIPE_EXPAND_READY, &sh->state);
+ atomic_dec(&conf->reshape_stripes);
+ wake_up(&conf->wait_for_overlap);
+ md_done_sync(conf->mddev, STRIPE_SECTORS, 1);
+ }
+
+ if (expanding && locked == 0) {
+ /* We have read all the blocks in this stripe and now we need to
+ * copy some of them into a target stripe for expand.
+ */
+ clear_bit(STRIPE_EXPAND_SOURCE, &sh->state);
+ for (i=0; i< sh->disks; i++)
+ if (i != sh->pd_idx) {
+ int dd_idx, pd_idx, j;
+ struct stripe_head *sh2;
+
+ sector_t bn = compute_blocknr(sh, i);
+ sector_t s = raid5_compute_sector(bn, conf->raid_disks,
+ conf->raid_disks-1,
+ &dd_idx, &pd_idx, conf);
+ sh2 = get_active_stripe(conf, s, conf->raid_disks, pd_idx, 1);
+ if (sh2 == NULL)
+ /* so far only the early blocks of this stripe
+ * have been requested. When later blocks
+ * get requested, we will try again
+ */
+ continue;
+ if(!test_bit(STRIPE_EXPANDING, &sh2->state) ||
+ test_bit(R5_Expanded, &sh2->dev[dd_idx].flags)) {
+ /* must have already done this block */
+ release_stripe(sh2);
+ continue;
+ }
+ memcpy(page_address(sh2->dev[dd_idx].page),
+ page_address(sh->dev[i].page),
+ STRIPE_SIZE);
+ set_bit(R5_Expanded, &sh2->dev[dd_idx].flags);
+ set_bit(R5_UPTODATE, &sh2->dev[dd_idx].flags);
+ for (j=0; j<conf->raid_disks; j++)
+ if (j != sh2->pd_idx &&
+ !test_bit(R5_Expanded, &sh2->dev[j].flags))
+ break;
+ if (j == conf->raid_disks) {
+ set_bit(STRIPE_EXPAND_READY, &sh2->state);
+ set_bit(STRIPE_HANDLE, &sh2->state);
+ }
+ release_stripe(sh2);
+ }
+ }
+
spin_unlock(&sh->lock);
while ((bi=return_bi)) {
rcu_read_unlock();
if (rdev) {
- if (syncing)
+ if (syncing || expanding || expanded)
md_sync_acct(rdev->bdev, STRIPE_SECTORS);
bi->bi_bdev = rdev->bdev;
spin_unlock_irq(&conf->device_lock);
}
-static int make_request (request_queue_t *q, struct bio * bi)
+static int make_request(request_queue_t *q, struct bio * bi)
{
mddev_t *mddev = q->queuedata;
raid5_conf_t *conf = mddev_to_conf(mddev);
- const unsigned int raid_disks = conf->raid_disks;
- const unsigned int data_disks = raid_disks - 1;
unsigned int dd_idx, pd_idx;
sector_t new_sector;
sector_t logical_sector, last_sector;
struct stripe_head *sh;
const int rw = bio_data_dir(bi);
+ int remaining;
if (unlikely(bio_barrier(bi))) {
bio_endio(bi, bi->bi_size, -EOPNOTSUPP);
for (;logical_sector < last_sector; logical_sector += STRIPE_SECTORS) {
DEFINE_WAIT(w);
-
- new_sector = raid5_compute_sector(logical_sector,
- raid_disks, data_disks, &dd_idx, &pd_idx, conf);
+ int disks;
+ retry:
+ prepare_to_wait(&conf->wait_for_overlap, &w, TASK_UNINTERRUPTIBLE);
+ if (likely(conf->expand_progress == MaxSector))
+ disks = conf->raid_disks;
+ else {
+ /* spinlock is needed as expand_progress may be
+ * 64bit on a 32bit platform, and so it might be
+ * possible to see a half-updated value
+ * Ofcourse expand_progress could change after
+ * the lock is dropped, so once we get a reference
+ * to the stripe that we think it is, we will have
+ * to check again.
+ */
+ spin_lock_irq(&conf->device_lock);
+ disks = conf->raid_disks;
+ if (logical_sector >= conf->expand_progress)
+ disks = conf->previous_raid_disks;
+ else {
+ if (logical_sector >= conf->expand_lo) {
+ spin_unlock_irq(&conf->device_lock);
+ schedule();
+ goto retry;
+ }
+ }
+ spin_unlock_irq(&conf->device_lock);
+ }
+ new_sector = raid5_compute_sector(logical_sector, disks, disks - 1,
+ &dd_idx, &pd_idx, conf);
PRINTK("raid5: make_request, sector %llu logical %llu\n",
(unsigned long long)new_sector,
(unsigned long long)logical_sector);
- retry:
- prepare_to_wait(&conf->wait_for_overlap, &w, TASK_UNINTERRUPTIBLE);
- sh = get_active_stripe(conf, new_sector, pd_idx, (bi->bi_rw&RWA_MASK));
+ sh = get_active_stripe(conf, new_sector, disks, pd_idx, (bi->bi_rw&RWA_MASK));
if (sh) {
- if (!add_stripe_bio(sh, bi, dd_idx, (bi->bi_rw&RW_MASK))) {
- /* Add failed due to overlap. Flush everything
+ if (unlikely(conf->expand_progress != MaxSector)) {
+ /* expansion might have moved on while waiting for a
+ * stripe, so we must do the range check again.
+ * Expansion could still move past after this
+ * test, but as we are holding a reference to
+ * 'sh', we know that if that happens,
+ * STRIPE_EXPANDING will get set and the expansion
+ * won't proceed until we finish with the stripe.
+ */
+ int must_retry = 0;
+ spin_lock_irq(&conf->device_lock);
+ if (logical_sector < conf->expand_progress &&
+ disks == conf->previous_raid_disks)
+ /* mismatch, need to try again */
+ must_retry = 1;
+ spin_unlock_irq(&conf->device_lock);
+ if (must_retry) {
+ release_stripe(sh);
+ goto retry;
+ }
+ }
+ /* FIXME what if we get a false positive because these
+ * are being updated.
+ */
+ if (logical_sector >= mddev->suspend_lo &&
+ logical_sector < mddev->suspend_hi) {
+ release_stripe(sh);
+ schedule();
+ goto retry;
+ }
+
+ if (test_bit(STRIPE_EXPANDING, &sh->state) ||
+ !add_stripe_bio(sh, bi, dd_idx, (bi->bi_rw&RW_MASK))) {
+ /* Stripe is busy expanding or
+ * add failed due to overlap. Flush everything
* and wait a while
*/
raid5_unplug_device(mddev->queue);
raid5_plug_device(conf);
handle_stripe(sh);
release_stripe(sh);
-
} else {
/* cannot get stripe for read-ahead, just give-up */
clear_bit(BIO_UPTODATE, &bi->bi_flags);
}
spin_lock_irq(&conf->device_lock);
- if (--bi->bi_phys_segments == 0) {
+ remaining = --bi->bi_phys_segments;
+ spin_unlock_irq(&conf->device_lock);
+ if (remaining == 0) {
int bytes = bi->bi_size;
if ( bio_data_dir(bi) == WRITE )
bi->bi_size = 0;
bi->bi_end_io(bi, bytes, 0);
}
- spin_unlock_irq(&conf->device_lock);
return 0;
}
{
raid5_conf_t *conf = (raid5_conf_t *) mddev->private;
struct stripe_head *sh;
- int sectors_per_chunk = conf->chunk_size >> 9;
- sector_t x;
- unsigned long stripe;
- int chunk_offset;
- int dd_idx, pd_idx;
- sector_t first_sector;
+ int pd_idx;
+ sector_t first_sector, last_sector;
int raid_disks = conf->raid_disks;
int data_disks = raid_disks-1;
sector_t max_sector = mddev->size << 1;
if (sector_nr >= max_sector) {
/* just being told to finish up .. nothing much to do */
unplug_slaves(mddev);
+ if (test_bit(MD_RECOVERY_RESHAPE, &mddev->recovery)) {
+ end_reshape(conf);
+ return 0;
+ }
if (mddev->curr_resync < max_sector) /* aborted */
bitmap_end_sync(mddev->bitmap, mddev->curr_resync,
return 0;
}
+
+ if (test_bit(MD_RECOVERY_RESHAPE, &mddev->recovery)) {
+ /* reshaping is quite different to recovery/resync so it is
+ * handled quite separately ... here.
+ *
+ * On each call to sync_request, we gather one chunk worth of
+ * destination stripes and flag them as expanding.
+ * Then we find all the source stripes and request reads.
+ * As the reads complete, handle_stripe will copy the data
+ * into the destination stripe and release that stripe.
+ */
+ int i;
+ int dd_idx;
+ sector_t writepos, safepos, gap;
+
+ if (sector_nr == 0 &&
+ conf->expand_progress != 0) {
+ /* restarting in the middle, skip the initial sectors */
+ sector_nr = conf->expand_progress;
+ sector_div(sector_nr, conf->raid_disks-1);
+ *skipped = 1;
+ return sector_nr;
+ }
+
+ /* we update the metadata when there is more than 3Meg
+ * in the block range (that is rather arbitrary, should
+ * probably be time based) or when the data about to be
+ * copied would over-write the source of the data at
+ * the front of the range.
+ * i.e. one new_stripe forward from expand_progress new_maps
+ * to after where expand_lo old_maps to
+ */
+ writepos = conf->expand_progress +
+ conf->chunk_size/512*(conf->raid_disks-1);
+ sector_div(writepos, conf->raid_disks-1);
+ safepos = conf->expand_lo;
+ sector_div(safepos, conf->previous_raid_disks-1);
+ gap = conf->expand_progress - conf->expand_lo;
+
+ if (writepos >= safepos ||
+ gap > (conf->raid_disks-1)*3000*2 /*3Meg*/) {
+ /* Cannot proceed until we've updated the superblock... */
+ wait_event(conf->wait_for_overlap,
+ atomic_read(&conf->reshape_stripes)==0);
+ mddev->reshape_position = conf->expand_progress;
+ mddev->sb_dirty = 1;
+ md_wakeup_thread(mddev->thread);
+ wait_event(mddev->sb_wait, mddev->sb_dirty == 0 ||
+ kthread_should_stop());
+ spin_lock_irq(&conf->device_lock);
+ conf->expand_lo = mddev->reshape_position;
+ spin_unlock_irq(&conf->device_lock);
+ wake_up(&conf->wait_for_overlap);
+ }
+
+ for (i=0; i < conf->chunk_size/512; i+= STRIPE_SECTORS) {
+ int j;
+ int skipped = 0;
+ pd_idx = stripe_to_pdidx(sector_nr+i, conf, conf->raid_disks);
+ sh = get_active_stripe(conf, sector_nr+i,
+ conf->raid_disks, pd_idx, 0);
+ set_bit(STRIPE_EXPANDING, &sh->state);
+ atomic_inc(&conf->reshape_stripes);
+ /* If any of this stripe is beyond the end of the old
+ * array, then we need to zero those blocks
+ */
+ for (j=sh->disks; j--;) {
+ sector_t s;
+ if (j == sh->pd_idx)
+ continue;
+ s = compute_blocknr(sh, j);
+ if (s < (mddev->array_size<<1)) {
+ skipped = 1;
+ continue;
+ }
+ memset(page_address(sh->dev[j].page), 0, STRIPE_SIZE);
+ set_bit(R5_Expanded, &sh->dev[j].flags);
+ set_bit(R5_UPTODATE, &sh->dev[j].flags);
+ }
+ if (!skipped) {
+ set_bit(STRIPE_EXPAND_READY, &sh->state);
+ set_bit(STRIPE_HANDLE, &sh->state);
+ }
+ release_stripe(sh);
+ }
+ spin_lock_irq(&conf->device_lock);
+ conf->expand_progress = (sector_nr + i)*(conf->raid_disks-1);
+ spin_unlock_irq(&conf->device_lock);
+ /* Ok, those stripe are ready. We can start scheduling
+ * reads on the source stripes.
+ * The source stripes are determined by mapping the first and last
+ * block on the destination stripes.
+ */
+ raid_disks = conf->previous_raid_disks;
+ data_disks = raid_disks - 1;
+ first_sector =
+ raid5_compute_sector(sector_nr*(conf->raid_disks-1),
+ raid_disks, data_disks,
+ &dd_idx, &pd_idx, conf);
+ last_sector =
+ raid5_compute_sector((sector_nr+conf->chunk_size/512)
+ *(conf->raid_disks-1) -1,
+ raid_disks, data_disks,
+ &dd_idx, &pd_idx, conf);
+ if (last_sector >= (mddev->size<<1))
+ last_sector = (mddev->size<<1)-1;
+ while (first_sector <= last_sector) {
+ pd_idx = stripe_to_pdidx(first_sector, conf, conf->previous_raid_disks);
+ sh = get_active_stripe(conf, first_sector,
+ conf->previous_raid_disks, pd_idx, 0);
+ set_bit(STRIPE_EXPAND_SOURCE, &sh->state);
+ set_bit(STRIPE_HANDLE, &sh->state);
+ release_stripe(sh);
+ first_sector += STRIPE_SECTORS;
+ }
+ return conf->chunk_size>>9;
+ }
/* if there is 1 or more failed drives and we are trying
* to resync, then assert that we are finished, because there is
* nothing we can do.
return sync_blocks * STRIPE_SECTORS; /* keep things rounded to whole stripes */
}
- x = sector_nr;
- chunk_offset = sector_div(x, sectors_per_chunk);
- stripe = x;
- BUG_ON(x != stripe);
-
- first_sector = raid5_compute_sector((sector_t)stripe*data_disks*sectors_per_chunk
- + chunk_offset, raid_disks, data_disks, &dd_idx, &pd_idx, conf);
- sh = get_active_stripe(conf, sector_nr, pd_idx, 1);
+ pd_idx = stripe_to_pdidx(sector_nr, conf, raid_disks);
+ sh = get_active_stripe(conf, sector_nr, raid_disks, pd_idx, 1);
if (sh == NULL) {
- sh = get_active_stripe(conf, sector_nr, pd_idx, 0);
+ sh = get_active_stripe(conf, sector_nr, raid_disks, pd_idx, 0);
/* make sure we don't swamp the stripe cache if someone else
* is trying to get access
*/
return -EIO;
}
- mddev->private = kzalloc(sizeof (raid5_conf_t)
- + mddev->raid_disks * sizeof(struct disk_info),
- GFP_KERNEL);
+ if (mddev->reshape_position != MaxSector) {
+ /* Check that we can continue the reshape.
+ * Currently only disks can change, it must
+ * increase, and we must be past the point where
+ * a stripe over-writes itself
+ */
+ sector_t here_new, here_old;
+ int old_disks;
+
+ if (mddev->new_level != mddev->level ||
+ mddev->new_layout != mddev->layout ||
+ mddev->new_chunk != mddev->chunk_size) {
+ printk(KERN_ERR "raid5: %s: unsupported reshape required - aborting.\n",
+ mdname(mddev));
+ return -EINVAL;
+ }
+ if (mddev->delta_disks <= 0) {
+ printk(KERN_ERR "raid5: %s: unsupported reshape (reduce disks) required - aborting.\n",
+ mdname(mddev));
+ return -EINVAL;
+ }
+ old_disks = mddev->raid_disks - mddev->delta_disks;
+ /* reshape_position must be on a new-stripe boundary, and one
+ * further up in new geometry must map after here in old geometry.
+ */
+ here_new = mddev->reshape_position;
+ if (sector_div(here_new, (mddev->chunk_size>>9)*(mddev->raid_disks-1))) {
+ printk(KERN_ERR "raid5: reshape_position not on a stripe boundary\n");
+ return -EINVAL;
+ }
+ /* here_new is the stripe we will write to */
+ here_old = mddev->reshape_position;
+ sector_div(here_old, (mddev->chunk_size>>9)*(old_disks-1));
+ /* here_old is the first stripe that we might need to read from */
+ if (here_new >= here_old) {
+ /* Reading from the same stripe as writing to - bad */
+ printk(KERN_ERR "raid5: reshape_position too early for auto-recovery - aborting.\n");
+ return -EINVAL;
+ }
+ printk(KERN_INFO "raid5: reshape will continue\n");
+ /* OK, we should be able to continue; */
+ }
+
+
+ mddev->private = kzalloc(sizeof (raid5_conf_t), GFP_KERNEL);
if ((conf = mddev->private) == NULL)
goto abort;
+ if (mddev->reshape_position == MaxSector) {
+ conf->previous_raid_disks = conf->raid_disks = mddev->raid_disks;
+ } else {
+ conf->raid_disks = mddev->raid_disks;
+ conf->previous_raid_disks = mddev->raid_disks - mddev->delta_disks;
+ }
+
+ conf->disks = kzalloc(conf->raid_disks * sizeof(struct disk_info),
+ GFP_KERNEL);
+ if (!conf->disks)
+ goto abort;
conf->mddev = mddev;
ITERATE_RDEV(mddev,rdev,tmp) {
raid_disk = rdev->raid_disk;
- if (raid_disk >= mddev->raid_disks
+ if (raid_disk >= conf->raid_disks
|| raid_disk < 0)
continue;
disk = conf->disks + raid_disk;
}
}
- conf->raid_disks = mddev->raid_disks;
/*
* 0 for a fully functional array, 1 for a degraded array.
*/
conf->level = mddev->level;
conf->algorithm = mddev->layout;
conf->max_nr_stripes = NR_STRIPES;
+ conf->expand_progress = mddev->reshape_position;
/* device size must be a multiple of chunk size */
mddev->size &= ~(mddev->chunk_size/1024 -1);
print_raid5_conf(conf);
+ if (conf->expand_progress != MaxSector) {
+ printk("...ok start reshape thread\n");
+ conf->expand_lo = conf->expand_progress;
+ atomic_set(&conf->reshape_stripes, 0);
+ clear_bit(MD_RECOVERY_SYNC, &mddev->recovery);
+ clear_bit(MD_RECOVERY_CHECK, &mddev->recovery);
+ set_bit(MD_RECOVERY_RESHAPE, &mddev->recovery);
+ set_bit(MD_RECOVERY_RUNNING, &mddev->recovery);
+ mddev->sync_thread = md_register_thread(md_do_sync, mddev,
+ "%s_reshape");
+ /* FIXME if md_register_thread fails?? */
+ md_wakeup_thread(mddev->sync_thread);
+
+ }
+
/* read-ahead size must cover two whole stripes, which is
* 2 * (n-1) * chunksize where 'n' is the number of raid devices
*/
mddev->queue->unplug_fn = raid5_unplug_device;
mddev->queue->issue_flush_fn = raid5_issue_flush;
+ mddev->array_size = mddev->size * (conf->previous_raid_disks - 1);
- mddev->array_size = mddev->size * (mddev->raid_disks - 1);
return 0;
abort:
if (conf) {
print_raid5_conf(conf);
+ kfree(conf->disks);
kfree(conf->stripe_hashtbl);
kfree(conf);
}
kfree(conf->stripe_hashtbl);
blk_sync_queue(mddev->queue); /* the unplug fn references 'conf'*/
sysfs_remove_group(&mddev->kobj, &raid5_attrs_group);
+ kfree(conf->disks);
kfree(conf);
mddev->private = NULL;
return 0;
printk("sh %llu, count %d.\n",
(unsigned long long)sh->sector, atomic_read(&sh->count));
printk("sh %llu, ", (unsigned long long)sh->sector);
- for (i = 0; i < sh->raid_conf->raid_disks; i++) {
+ for (i = 0; i < sh->disks; i++) {
printk("(cache%d: %p %ld) ",
i, sh->dev[i].page, sh->dev[i].flags);
}
/*
* find the disk ...
*/
- for (disk=0; disk < mddev->raid_disks; disk++)
+ for (disk=0; disk < conf->raid_disks; disk++)
if ((p=conf->disks + disk)->rdev == NULL) {
clear_bit(In_sync, &rdev->flags);
rdev->raid_disk = disk;
return 0;
}
+#ifdef CONFIG_MD_RAID5_RESHAPE
+static int raid5_check_reshape(mddev_t *mddev)
+{
+ raid5_conf_t *conf = mddev_to_conf(mddev);
+ int err;
+
+ if (mddev->delta_disks < 0 ||
+ mddev->new_level != mddev->level)
+ return -EINVAL; /* Cannot shrink array or change level yet */
+ if (mddev->delta_disks == 0)
+ return 0; /* nothing to do */
+
+ /* Can only proceed if there are plenty of stripe_heads.
+ * We need a minimum of one full stripe,, and for sensible progress
+ * it is best to have about 4 times that.
+ * If we require 4 times, then the default 256 4K stripe_heads will
+ * allow for chunk sizes up to 256K, which is probably OK.
+ * If the chunk size is greater, user-space should request more
+ * stripe_heads first.
+ */
+ if ((mddev->chunk_size / STRIPE_SIZE) * 4 > conf->max_nr_stripes ||
+ (mddev->new_chunk / STRIPE_SIZE) * 4 > conf->max_nr_stripes) {
+ printk(KERN_WARNING "raid5: reshape: not enough stripes. Needed %lu\n",
+ (mddev->chunk_size / STRIPE_SIZE)*4);
+ return -ENOSPC;
+ }
+
+ err = resize_stripes(conf, conf->raid_disks + mddev->delta_disks);
+ if (err)
+ return err;
+
+ /* looks like we might be able to manage this */
+ return 0;
+}
+
+static int raid5_start_reshape(mddev_t *mddev)
+{
+ raid5_conf_t *conf = mddev_to_conf(mddev);
+ mdk_rdev_t *rdev;
+ struct list_head *rtmp;
+ int spares = 0;
+ int added_devices = 0;
+
+ if (mddev->degraded ||
+ test_bit(MD_RECOVERY_RUNNING, &mddev->recovery))
+ return -EBUSY;
+
+ ITERATE_RDEV(mddev, rdev, rtmp)
+ if (rdev->raid_disk < 0 &&
+ !test_bit(Faulty, &rdev->flags))
+ spares++;
+
+ if (spares < mddev->delta_disks-1)
+ /* Not enough devices even to make a degraded array
+ * of that size
+ */
+ return -EINVAL;
+
+ atomic_set(&conf->reshape_stripes, 0);
+ spin_lock_irq(&conf->device_lock);
+ conf->previous_raid_disks = conf->raid_disks;
+ conf->raid_disks += mddev->delta_disks;
+ conf->expand_progress = 0;
+ conf->expand_lo = 0;
+ spin_unlock_irq(&conf->device_lock);
+
+ /* Add some new drives, as many as will fit.
+ * We know there are enough to make the newly sized array work.
+ */
+ ITERATE_RDEV(mddev, rdev, rtmp)
+ if (rdev->raid_disk < 0 &&
+ !test_bit(Faulty, &rdev->flags)) {
+ if (raid5_add_disk(mddev, rdev)) {
+ char nm[20];
+ set_bit(In_sync, &rdev->flags);
+ conf->working_disks++;
+ added_devices++;
+ sprintf(nm, "rd%d", rdev->raid_disk);
+ sysfs_create_link(&mddev->kobj, &rdev->kobj, nm);
+ } else
+ break;
+ }
+
+ mddev->degraded = (conf->raid_disks - conf->previous_raid_disks) - added_devices;
+ mddev->raid_disks = conf->raid_disks;
+ mddev->reshape_position = 0;
+ mddev->sb_dirty = 1;
+
+ clear_bit(MD_RECOVERY_SYNC, &mddev->recovery);
+ clear_bit(MD_RECOVERY_CHECK, &mddev->recovery);
+ set_bit(MD_RECOVERY_RESHAPE, &mddev->recovery);
+ set_bit(MD_RECOVERY_RUNNING, &mddev->recovery);
+ mddev->sync_thread = md_register_thread(md_do_sync, mddev,
+ "%s_reshape");
+ if (!mddev->sync_thread) {
+ mddev->recovery = 0;
+ spin_lock_irq(&conf->device_lock);
+ mddev->raid_disks = conf->raid_disks = conf->previous_raid_disks;
+ conf->expand_progress = MaxSector;
+ spin_unlock_irq(&conf->device_lock);
+ return -EAGAIN;
+ }
+ md_wakeup_thread(mddev->sync_thread);
+ md_new_event(mddev);
+ return 0;
+}
+#endif
+
+static void end_reshape(raid5_conf_t *conf)
+{
+ struct block_device *bdev;
+
+ if (!test_bit(MD_RECOVERY_INTR, &conf->mddev->recovery)) {
+ conf->mddev->array_size = conf->mddev->size * (conf->raid_disks-1);
+ set_capacity(conf->mddev->gendisk, conf->mddev->array_size << 1);
+ conf->mddev->changed = 1;
+
+ bdev = bdget_disk(conf->mddev->gendisk, 0);
+ if (bdev) {
+ mutex_lock(&bdev->bd_inode->i_mutex);
+ i_size_write(bdev->bd_inode, conf->mddev->array_size << 10);
+ mutex_unlock(&bdev->bd_inode->i_mutex);
+ bdput(bdev);
+ }
+ spin_lock_irq(&conf->device_lock);
+ conf->expand_progress = MaxSector;
+ spin_unlock_irq(&conf->device_lock);
+ conf->mddev->reshape_position = MaxSector;
+ }
+}
+
static void raid5_quiesce(mddev_t *mddev, int state)
{
raid5_conf_t *conf = mddev_to_conf(mddev);
switch(state) {
+ case 2: /* resume for a suspend */
+ wake_up(&conf->wait_for_overlap);
+ break;
+
case 1: /* stop all writes */
spin_lock_irq(&conf->device_lock);
conf->quiesce = 1;
spin_lock_irq(&conf->device_lock);
conf->quiesce = 0;
wake_up(&conf->wait_for_stripe);
+ wake_up(&conf->wait_for_overlap);
spin_unlock_irq(&conf->device_lock);
break;
}
.spare_active = raid5_spare_active,
.sync_request = sync_request,
.resize = raid5_resize,
+#ifdef CONFIG_MD_RAID5_RESHAPE
+ .check_reshape = raid5_check_reshape,
+ .start_reshape = raid5_start_reshape,
+#endif
.quiesce = raid5_quiesce,
};
kmem_cache_t *sc;
int devs = conf->raid_disks;
- sprintf(conf->cache_name, "raid6/%s", mdname(conf->mddev));
+ sprintf(conf->cache_name[0], "raid6/%s", mdname(conf->mddev));
- sc = kmem_cache_create(conf->cache_name,
+ sc = kmem_cache_create(conf->cache_name[0],
sizeof(struct stripe_head)+(devs-1)*sizeof(struct r5dev),
0, 0, NULL, NULL);
if (!sc)
return -EIO;
}
- mddev->private = kzalloc(sizeof (raid6_conf_t)
- + mddev->raid_disks * sizeof(struct disk_info),
- GFP_KERNEL);
+ mddev->private = kzalloc(sizeof (raid6_conf_t), GFP_KERNEL);
if ((conf = mddev->private) == NULL)
goto abort;
+ conf->disks = kzalloc(mddev->raid_disks * sizeof(struct disk_info),
+ GFP_KERNEL);
+ if (!conf->disks)
+ goto abort;
+
conf->mddev = mddev;
if ((conf->stripe_hashtbl = kzalloc(PAGE_SIZE, GFP_KERNEL)) == NULL)
print_raid6_conf(conf);
safe_put_page(conf->spare_page);
kfree(conf->stripe_hashtbl);
+ kfree(conf->disks);
kfree(conf);
}
mddev->private = NULL;
if (dvbdev && dvbdev->fops) {
int err = 0;
- struct file_operations *old_fops;
+ const struct file_operations *old_fops;
file->private_data = dvbdev;
old_fops = file->f_op;
unsigned int minor = iminor(inode);
int err = 0;
struct video_device *vfl;
- struct file_operations *old_fops;
+ const struct file_operations *old_fops;
if(minor>=VIDEO_NUM_DEVICES)
return -ENODEV;
typedef struct _i2o_proc_entry_t {
char *name; /* entry name */
mode_t mode; /* mode */
- struct file_operations *fops; /* open function */
+ const struct file_operations *fops; /* open function */
} i2o_proc_entry;
/* global I2O /proc/i2o entry */
void ibmasm_register_panic_notifier(void)
{
- notifier_chain_register(&panic_notifier_list, &panic_notifier);
+ atomic_notifier_chain_register(&panic_notifier_list, &panic_notifier);
}
void ibmasm_unregister_panic_notifier(void)
{
- notifier_chain_unregister(&panic_notifier_list, &panic_notifier);
+ atomic_notifier_chain_unregister(&panic_notifier_list,
+ &panic_notifier);
}
.drop_inode = generic_delete_inode,
};
-static struct file_operations *ibmasmfs_dir_ops = &simple_dir_operations;
+static const struct file_operations *ibmasmfs_dir_ops = &simple_dir_operations;
static struct file_system_type ibmasmfs_type = {
.owner = THIS_MODULE,
* bond_netdev_event: handle netdev notifier chain events.
*
* This function receives events for the netdev chain. The caller (an
- * ioctl handler calling notifier_call_chain) holds the necessary
+ * ioctl handler calling blocking_notifier_call_chain) holds the necessary
* locks for us to safely manipulate the slave devices (RTNL lock,
* dev_probe_lock).
*/
#include <linux/random.h>
#include <linux/init.h>
#include <linux/if_vlan.h>
+#include <linux/dma-mapping.h>
#include <asm/irq.h>
#include <asm/io.h>
if (id->driver_data & DEV_HAS_HIGH_DMA) {
/* packet format 3: supports 40-bit addressing */
np->desc_ver = DESC_VER_3;
- if (pci_set_dma_mask(pci_dev, 0x0000007fffffffffULL)) {
+ if (pci_set_dma_mask(pci_dev, DMA_39BIT_MASK)) {
printk(KERN_INFO "forcedeth: 64-bit DMA failed, using 32-bit addressing for device %s.\n",
pci_name(pci_dev));
} else {
#include <linux/ip.h>
#include <linux/tcp.h>
#include <linux/udp.h>
+#include <linux/dma-mapping.h>
#ifdef CONFIG_SERIAL_8250
#include <linux/serial_core.h>
int err, pci_using_dac;
/* Configure DMA attributes. */
- err = pci_set_dma_mask(pdev, 0xffffffffffffffffULL);
+ err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
if (!err) {
pci_using_dac = 1;
- err = pci_set_consistent_dma_mask(pdev, 0xffffffffffffffffULL);
+ err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
if (err < 0) {
printk(KERN_ERR "%s: Unable to obtain 64 bit DMA "
"for consistent allocations\n", pci_name(pdev));
goto out;
}
} else {
- err = pci_set_dma_mask(pdev, 0xffffffffULL);
+ err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
if (err) {
printk(KERN_ERR "%s: No usable DMA configuration, "
"aborting.\n", pci_name(pdev));
/* Register with PnP subsystem to detect disable ports */
ret = pnp_register_driver(&nsc_ircc_pnp_driver);
- if (ret >= 0)
+ if (!ret)
pnp_registered = 1;
ret = -ENODEV;
int cfg_base = info->cfg_base;
int enabled;
- /* User is shure about his config... accept it. */
+ /* User is sure about his config... accept it. */
IRDA_DEBUG(2, "%s(): nsc_ircc_init_39x (user settings): "
"io=0x%04x, irq=%d, dma=%d\n",
__FUNCTION__, info->fir_base, info->irq, info->dma);
memset(stats, 0, sizeof(struct net_device_stats));
- for_each_cpu(i) {
+ for_each_possible_cpu(i) {
struct net_device_stats *lb_stats;
lb_stats = &per_cpu(loopback_stats, i);
int using_dac = 0;
/* See if we can set the dma mask early on; failure is fatal. */
- if (sizeof(dma_addr_t) == 8 &&
- !pci_set_dma_mask(pci_dev, 0xffffffffffffffffULL)) {
+ if (sizeof(dma_addr_t) == 8 &&
+ !pci_set_dma_mask(pci_dev, DMA_64BIT_MASK)) {
using_dac = 1;
- } else if (!pci_set_dma_mask(pci_dev, 0xffffffff)) {
+ } else if (!pci_set_dma_mask(pci_dev, DMA_32BIT_MASK)) {
using_dac = 0;
} else {
printk(KERN_WARNING "ns83820.c: pci_set_dma_mask failed!\n");
int i, table_entries;
u32 rx_mode;
- /* 635 Hash Table entires = 256(2^16) */
+ /* 635 Hash Table entries = 256(2^16) */
if((sis_priv->chipset_rev >= SIS635A_900_REV) ||
(sis_priv->chipset_rev == SIS900B_900_REV))
table_entries = 16;
u_char *rst; /* Start of reset sequence in SROM */
u_int mc; /* Media Capabilities */
u_int ana; /* NWay Advertisement */
- u_int fdx; /* Full DupleX capabilites for each media */
+ u_int fdx; /* Full DupleX capabilities for each media */
u_int ttm; /* Transmit Threshold Mode for each media */
u_int mci; /* 21142 MII Connector Interrupt info */
};
/* negotiation ended successfully */
/* get the link partners reply and mask out all but
- * bits 24-21 which show the partners capabilites
+ * bits 24-21 which show the partners capabilities
* and match those to what we advertised
*
* then begin to interpret the results of the negotiation.
};
/* Notes on the new subsystem numbering scheme:
- * bits 0-1 indicate crypto capabilites: (0) variable, (1) DES, or (2) 3DES
+ * bits 0-1 indicate crypto capabilities: (0) variable, (1) DES, or (2) 3DES
* bit 4 indicates if this card has secured firmware (we don't support it)
* bit 8 indicates if this is a (0) copper or (1) fiber card
* bits 12-16 indicate card type: (0) client and (1) server
/* we have two rings to choose from, but we only use txLo for now
* If we start using the Hi ring as well, we'll need to update
* typhoon_stop_runtime(), typhoon_interrupt(), typhoon_num_free_tx(),
- * and TXHI_ENTIRES to match, as well as update the TSO code below
+ * and TXHI_ENTRIES to match, as well as update the TSO code below
* to get the right DMA address
*/
txRing = &tp->txLoRing;
We set both dma_mask and consistent_dma_mask to 28 bits
and pray pci_alloc_consistent() will use this info. It should
work on most platforms */
- if (pci_set_consistent_dma_mask(pdev, 0x0FFFFFFF) ||
- pci_set_dma_mask(pdev, 0x0FFFFFFF)) {
+ if (pci_set_consistent_dma_mask(pdev, DMA_28BIT_MASK) ||
+ pci_set_dma_mask(pdev, DMA_28BIT_MASK)) {
printk(KERN_ERR "wanXL: No usable DMA configuration\n");
return -EIO;
}
unsigned long flags;
/* Note : you may have realised that, as this is a SET operation,
- * this is priviledged and therefore a normal user can't
+ * this is privileged and therefore a normal user can't
* perform scanning.
* This is not an error, while the device perform scanning,
* traffic doesn't flow, so it's a perfect DoS...
if (essid->length) {
dwrq->flags = 1; /* set ESSID to ON for Wireless Extensions */
- /* if it is to big, trunk it */
+ /* if it is too big, trunk it */
dwrq->length = min((u8)IW_ESSID_MAX_SIZE, essid->length);
} else {
dwrq->flags = 0;
#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/init.h> /* For __init, __exit */
+#include <linux/dma-mapping.h>
#include "prismcompat.h"
#include "islpci_dev.h"
}
/* enable PCI DMA */
- if (pci_set_dma_mask(pdev, 0xffffffff)) {
+ if (pci_set_dma_mask(pdev, DMA_32BIT_MASK)) {
printk(KERN_ERR "%s: 32-bit PCI DMA not supported", DRV_NAME);
goto do_pci_disable_device;
}
cpu_buf->tracing = 0;
}
-void oprofile_add_sample(struct pt_regs * const regs, unsigned long event)
+void oprofile_add_ext_sample(unsigned long pc, struct pt_regs * const regs,
+ unsigned long event, int is_kernel)
{
struct oprofile_cpu_buffer * cpu_buf = &cpu_buffer[smp_processor_id()];
- unsigned long pc = profile_pc(regs);
- int is_kernel = !user_mode(regs);
if (!backtrace_depth) {
log_sample(cpu_buf, pc, is_kernel, event);
oprofile_end_trace(cpu_buf);
}
+void oprofile_add_sample(struct pt_regs * const regs, unsigned long event)
+{
+ int is_kernel = !user_mode(regs);
+ unsigned long pc = profile_pc(regs);
+
+ oprofile_add_ext_sample(pc, regs, event, is_kernel);
+}
+
void oprofile_add_pc(unsigned long pc, int is_kernel, unsigned long event)
{
struct oprofile_cpu_buffer * cpu_buf = &cpu_buffer[smp_processor_id()];
struct oprofile_cpu_buffer * cpu_buf;
int i;
- for_each_cpu(i) {
+ for_each_possible_cpu(i) {
cpu_buf = &cpu_buffer[i];
cpu_buf->sample_received = 0;
cpu_buf->sample_lost_overflow = 0;
if (!dir)
return;
- for_each_cpu(i) {
+ for_each_possible_cpu(i) {
cpu_buf = &cpu_buffer[i];
snprintf(buf, 10, "cpu%d", i);
cpudir = oprofilefs_mkdir(sb, dir, buf);
static struct dentry * __oprofilefs_create_file(struct super_block * sb,
- struct dentry * root, char const * name, struct file_operations * fops,
+ struct dentry * root, char const * name, const struct file_operations * fops,
int perm)
{
struct dentry * dentry;
int oprofilefs_create_file(struct super_block * sb, struct dentry * root,
- char const * name, struct file_operations * fops)
+ char const * name, const struct file_operations * fops)
{
if (!__oprofilefs_create_file(sb, root, name, fops, 0644))
return -EFAULT;
int oprofilefs_create_file_perm(struct super_block * sb, struct dentry * root,
- char const * name, struct file_operations * fops, int perm)
+ char const * name, const struct file_operations * fops, int perm)
{
if (!__oprofilefs_create_file(sb, root, name, fops, perm))
return -EFAULT;
static struct notifier_block led_notifier = {
.notifier_call = led_halt,
};
+static int notifier_disabled = 0;
static int led_halt(struct notifier_block *nb, unsigned long event, void *buf)
{
char *txt;
-
+
+ if (notifier_disabled)
+ return NOTIFY_OK;
+
+ notifier_disabled = 1;
switch (event) {
case SYS_RESTART: txt = "SYSTEM RESTART";
break;
if (led_func_ptr)
led_func_ptr(0xff); /* turn all LEDs ON */
- unregister_reboot_notifier(&led_notifier);
return NOTIFY_OK;
}
return 1;
}
+static void __exit led_exit(void)
+{
+ unregister_reboot_notifier(&led_notifier);
+ return;
+}
+
#ifdef CONFIG_PROC_FS
module_init(led_create_procfs)
#endif
}
/* Register a call for panic conditions. */
- notifier_chain_register(&panic_notifier_list, &parisc_panic_block);
+ atomic_notifier_chain_register(&panic_notifier_list,
+ &parisc_panic_block);
tasklet_enable(&power_tasklet);
return;
tasklet_disable(&power_tasklet);
- notifier_chain_unregister(&panic_notifier_list, &parisc_panic_block);
+ atomic_notifier_chain_unregister(&panic_notifier_list,
+ &parisc_panic_block);
power_tasklet.func = NULL;
pdc_soft_power_button(0);
}
* autoirq is PARPORT_IRQ_NONE, PARPORT_IRQ_AUTO, or PARPORT_IRQ_PROBEONLY
* autodma is PARPORT_DMA_NONE or PARPORT_DMA_AUTO
*/
-static int __init parport_pc_find_ports (int autoirq, int autodma)
+static void __init parport_pc_find_ports (int autoirq, int autodma)
{
- int count = 0, r;
+ int count = 0, err;
#ifdef CONFIG_PARPORT_PC_SUPERIO
detect_and_report_winbond ();
/* PnP ports, skip detection if SuperIO already found them */
if (!count) {
- r = pnp_register_driver (&parport_pc_pnp_driver);
- if (r >= 0) {
+ err = pnp_register_driver (&parport_pc_pnp_driver);
+ if (!err)
pnp_registered_parport = 1;
- count += r;
- }
}
/* ISA ports and whatever (see asm/parport.h). */
- count += parport_pc_find_nonpci_ports (autoirq, autodma);
-
- r = pci_register_driver (&parport_pc_pci_driver);
- if (r)
- return r;
- pci_registered_parport = 1;
- count += 1;
+ parport_pc_find_nonpci_ports (autoirq, autodma);
- return count;
+ err = pci_register_driver (&parport_pc_pci_driver);
+ if (!err)
+ pci_registered_parport = 1;
}
/*
static int __init parport_pc_init(void)
{
- int count = 0;
-
if (parse_parport_params())
return -EINVAL;
break;
if ((io_hi[i]) == PARPORT_IOHI_AUTO)
io_hi[i] = 0x400 + io[i];
- if (parport_pc_probe_port(io[i], io_hi[i],
- irqval[i], dmaval[i], NULL))
- count++;
+ parport_pc_probe_port(io[i], io_hi[i],
+ irqval[i], dmaval[i], NULL);
}
} else
- count += parport_pc_find_ports (irqval[0], dmaval[0]);
+ parport_pc_find_ports (irqval[0], dmaval[0]);
return 0;
}
{
dev->card_link = NULL;
}
-
+
static void card_remove_first(struct pnp_dev * dev)
{
struct pnp_card_driver * drv = to_pnp_card_driver(dev->driver);
int pnp_register_card_driver(struct pnp_card_driver * drv)
{
- int count;
+ int error;
struct list_head *pos, *temp;
drv->link.name = drv->name;
drv->link.suspend = drv->suspend ? card_suspend : NULL;
drv->link.resume = drv->resume ? card_resume : NULL;
- count = pnp_register_driver(&drv->link);
- if (count < 0)
- return count;
+ error = pnp_register_driver(&drv->link);
+ if (error < 0)
+ return error;
spin_lock(&pnp_lock);
list_add_tail(&drv->global_list, &pnp_card_drivers);
spin_unlock(&pnp_lock);
- count = 0;
-
list_for_each_safe(pos,temp,&pnp_cards){
struct pnp_card *card = list_entry(pos, struct pnp_card, global_list);
- count += card_probe(card,drv);
+ card_probe(card,drv);
}
- return count;
+ return 0;
}
/**
.resume = pnp_bus_resume,
};
-
-static int count_devices(struct device * dev, void * c)
-{
- int * count = c;
- (*count)++;
- return 0;
-}
-
int pnp_register_driver(struct pnp_driver *drv)
{
- int count;
-
pnp_dbg("the driver '%s' has been registered", drv->name);
drv->driver.name = drv->name;
drv->driver.bus = &pnp_bus_type;
- count = driver_register(&drv->driver);
-
- /* get the number of initial matches */
- if (count >= 0){
- count = 0;
- driver_for_each_device(&drv->driver, NULL, &count, count_devices);
- }
- return count;
+ return driver_register(&drv->driver);
}
void pnp_unregister_driver(struct pnp_driver *drv)
--- /dev/null
+\#
+# RTC class/drivers configuration
+#
+
+menu "Real Time Clock"
+
+config RTC_LIB
+ tristate
+
+config RTC_CLASS
+ tristate "RTC class"
+ depends on EXPERIMENTAL
+ default n
+ select RTC_LIB
+ help
+ Generic RTC class support. If you say yes here, you will
+ be allowed to plug one or more RTCs to your system. You will
+ probably want to enable one of more of the interfaces below.
+
+ This driver can also be built as a module. If so, the module
+ will be called rtc-class.
+
+config RTC_HCTOSYS
+ bool "Set system time from RTC on startup"
+ depends on RTC_CLASS = y
+ default y
+ help
+ If you say yes here, the system time will be set using
+ the value read from the specified RTC device. This is useful
+ in order to avoid unnecessary fschk runs.
+
+config RTC_HCTOSYS_DEVICE
+ string "The RTC to read the time from"
+ depends on RTC_HCTOSYS = y
+ default "rtc0"
+ help
+ The RTC device that will be used as the source for
+ the system time, usually rtc0.
+
+comment "RTC interfaces"
+ depends on RTC_CLASS
+
+config RTC_INTF_SYSFS
+ tristate "sysfs"
+ depends on RTC_CLASS && SYSFS
+ default RTC_CLASS
+ help
+ Say yes here if you want to use your RTC using the sysfs
+ interface, /sys/class/rtc/rtcX .
+
+ This driver can also be built as a module. If so, the module
+ will be called rtc-sysfs.
+
+config RTC_INTF_PROC
+ tristate "proc"
+ depends on RTC_CLASS && PROC_FS
+ default RTC_CLASS
+ help
+ Say yes here if you want to use your RTC using the proc
+ interface, /proc/driver/rtc .
+
+ This driver can also be built as a module. If so, the module
+ will be called rtc-proc.
+
+config RTC_INTF_DEV
+ tristate "dev"
+ depends on RTC_CLASS
+ default RTC_CLASS
+ help
+ Say yes here if you want to use your RTC using the dev
+ interface, /dev/rtc .
+
+ This driver can also be built as a module. If so, the module
+ will be called rtc-dev.
+
+comment "RTC drivers"
+ depends on RTC_CLASS
+
+config RTC_DRV_X1205
+ tristate "Xicor/Intersil X1205"
+ depends on RTC_CLASS && I2C
+ help
+ If you say yes here you get support for the
+ Xicor/Intersil X1205 RTC chip.
+
+ This driver can also be built as a module. If so, the module
+ will be called rtc-x1205.
+
+config RTC_DRV_DS1672
+ tristate "Dallas/Maxim DS1672"
+ depends on RTC_CLASS && I2C
+ help
+ If you say yes here you get support for the
+ Dallas/Maxim DS1672 timekeeping chip.
+
+ This driver can also be built as a module. If so, the module
+ will be called rtc-ds1672.
+
+config RTC_DRV_PCF8563
+ tristate "Philips PCF8563/Epson RTC8564"
+ depends on RTC_CLASS && I2C
+ help
+ If you say yes here you get support for the
+ Philips PCF8563 RTC chip. The Epson RTC8564
+ should work as well.
+
+ This driver can also be built as a module. If so, the module
+ will be called rtc-pcf8563.
+
+config RTC_DRV_RS5C372
+ tristate "Ricoh RS5C372A/B"
+ depends on RTC_CLASS && I2C
+ help
+ If you say yes here you get support for the
+ Ricoh RS5C372A and RS5C372B RTC chips.
+
+ This driver can also be built as a module. If so, the module
+ will be called rtc-rs5c372.
+
+config RTC_DRV_M48T86
+ tristate "ST M48T86/Dallas DS12887"
+ depends on RTC_CLASS
+ help
+ If you say Y here you will get support for the
+ ST M48T86 and Dallas DS12887 RTC chips.
+
+ This driver can also be built as a module. If so, the module
+ will be called rtc-m48t86.
+
+config RTC_DRV_EP93XX
+ tristate "Cirrus Logic EP93XX"
+ depends on RTC_CLASS && ARCH_EP93XX
+ help
+ If you say yes here you get support for the
+ RTC embedded in the Cirrus Logic EP93XX processors.
+
+ This driver can also be built as a module. If so, the module
+ will be called rtc-ep93xx.
+
+config RTC_DRV_SA1100
+ tristate "SA11x0/PXA2xx"
+ depends on RTC_CLASS && (ARCH_SA1100 || ARCH_PXA)
+ help
+ If you say Y here you will get access to the real time clock
+ built into your SA11x0 or PXA2xx CPU.
+
+ To compile this driver as a module, choose M here: the
+ module will be called rtc-sa1100.
+
+config RTC_DRV_TEST
+ tristate "Test driver/device"
+ depends on RTC_CLASS
+ help
+ If you say yes here you get support for the
+ RTC test driver. It's a software RTC which can be
+ used to test the RTC subsystem APIs. It gets
+ the time from the system clock.
+ You want this driver only if you are doing development
+ on the RTC subsystem. Please read the source code
+ for further details.
+
+ This driver can also be built as a module. If so, the module
+ will be called rtc-test.
+
+endmenu
--- /dev/null
+#
+# Makefile for RTC class/drivers.
+#
+
+obj-$(CONFIG_RTC_LIB) += rtc-lib.o
+obj-$(CONFIG_RTC_HCTOSYS) += hctosys.o
+obj-$(CONFIG_RTC_CLASS) += rtc-core.o
+rtc-core-y := class.o interface.o
+
+obj-$(CONFIG_RTC_INTF_SYSFS) += rtc-sysfs.o
+obj-$(CONFIG_RTC_INTF_PROC) += rtc-proc.o
+obj-$(CONFIG_RTC_INTF_DEV) += rtc-dev.o
+
+obj-$(CONFIG_RTC_DRV_X1205) += rtc-x1205.o
+obj-$(CONFIG_RTC_DRV_TEST) += rtc-test.o
+obj-$(CONFIG_RTC_DRV_DS1672) += rtc-ds1672.o
+obj-$(CONFIG_RTC_DRV_PCF8563) += rtc-pcf8563.o
+obj-$(CONFIG_RTC_DRV_RS5C372) += rtc-rs5c372.o
+obj-$(CONFIG_RTC_DRV_M48T86) += rtc-m48t86.o
+obj-$(CONFIG_RTC_DRV_EP93XX) += rtc-ep93xx.o
+obj-$(CONFIG_RTC_DRV_SA1100) += rtc-sa1100.o
--- /dev/null
+/*
+ * RTC subsystem, base class
+ *
+ * Copyright (C) 2005 Tower Technologies
+ * Author: Alessandro Zummo <a.zummo@towertech.it>
+ *
+ * class skeleton from drivers/hwmon/hwmon.c
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#include <linux/module.h>
+#include <linux/rtc.h>
+#include <linux/kdev_t.h>
+#include <linux/idr.h>
+
+static DEFINE_IDR(rtc_idr);
+static DEFINE_MUTEX(idr_lock);
+struct class *rtc_class;
+
+static void rtc_device_release(struct class_device *class_dev)
+{
+ struct rtc_device *rtc = to_rtc_device(class_dev);
+ mutex_lock(&idr_lock);
+ idr_remove(&rtc_idr, rtc->id);
+ mutex_unlock(&idr_lock);
+ kfree(rtc);
+}
+
+/**
+ * rtc_device_register - register w/ RTC class
+ * @dev: the device to register
+ *
+ * rtc_device_unregister() must be called when the class device is no
+ * longer needed.
+ *
+ * Returns the pointer to the new struct class device.
+ */
+struct rtc_device *rtc_device_register(const char *name, struct device *dev,
+ struct rtc_class_ops *ops,
+ struct module *owner)
+{
+ struct rtc_device *rtc;
+ int id, err;
+
+ if (idr_pre_get(&rtc_idr, GFP_KERNEL) == 0) {
+ err = -ENOMEM;
+ goto exit;
+ }
+
+
+ mutex_lock(&idr_lock);
+ err = idr_get_new(&rtc_idr, NULL, &id);
+ mutex_unlock(&idr_lock);
+
+ if (err < 0)
+ goto exit;
+
+ id = id & MAX_ID_MASK;
+
+ rtc = kzalloc(sizeof(struct rtc_device), GFP_KERNEL);
+ if (rtc == NULL) {
+ err = -ENOMEM;
+ goto exit_idr;
+ }
+
+ rtc->id = id;
+ rtc->ops = ops;
+ rtc->owner = owner;
+ rtc->class_dev.dev = dev;
+ rtc->class_dev.class = rtc_class;
+ rtc->class_dev.release = rtc_device_release;
+
+ mutex_init(&rtc->ops_lock);
+ spin_lock_init(&rtc->irq_lock);
+ spin_lock_init(&rtc->irq_task_lock);
+
+ strlcpy(rtc->name, name, RTC_DEVICE_NAME_SIZE);
+ snprintf(rtc->class_dev.class_id, BUS_ID_SIZE, "rtc%d", id);
+
+ err = class_device_register(&rtc->class_dev);
+ if (err)
+ goto exit_kfree;
+
+ dev_info(dev, "rtc core: registered %s as %s\n",
+ rtc->name, rtc->class_dev.class_id);
+
+ return rtc;
+
+exit_kfree:
+ kfree(rtc);
+
+exit_idr:
+ idr_remove(&rtc_idr, id);
+
+exit:
+ return ERR_PTR(err);
+}
+EXPORT_SYMBOL_GPL(rtc_device_register);
+
+
+/**
+ * rtc_device_unregister - removes the previously registered RTC class device
+ *
+ * @rtc: the RTC class device to destroy
+ */
+void rtc_device_unregister(struct rtc_device *rtc)
+{
+ mutex_lock(&rtc->ops_lock);
+ rtc->ops = NULL;
+ mutex_unlock(&rtc->ops_lock);
+ class_device_unregister(&rtc->class_dev);
+}
+EXPORT_SYMBOL_GPL(rtc_device_unregister);
+
+int rtc_interface_register(struct class_interface *intf)
+{
+ intf->class = rtc_class;
+ return class_interface_register(intf);
+}
+EXPORT_SYMBOL_GPL(rtc_interface_register);
+
+static int __init rtc_init(void)
+{
+ rtc_class = class_create(THIS_MODULE, "rtc");
+ if (IS_ERR(rtc_class)) {
+ printk(KERN_ERR "%s: couldn't create class\n", __FILE__);
+ return PTR_ERR(rtc_class);
+ }
+ return 0;
+}
+
+static void __exit rtc_exit(void)
+{
+ class_destroy(rtc_class);
+}
+
+module_init(rtc_init);
+module_exit(rtc_exit);
+
+MODULE_AUTHOR("Alessandro Zummo <a.zummo@towerteh.it>");
+MODULE_DESCRIPTION("RTC class support");
+MODULE_LICENSE("GPL");
--- /dev/null
+/*
+ * RTC subsystem, initialize system time on startup
+ *
+ * Copyright (C) 2005 Tower Technologies
+ * Author: Alessandro Zummo <a.zummo@towertech.it>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#include <linux/rtc.h>
+
+/* IMPORTANT: the RTC only stores whole seconds. It is arbitrary
+ * whether it stores the most close value or the value with partial
+ * seconds truncated. However, it is important that we use it to store
+ * the truncated value. This is because otherwise it is necessary,
+ * in an rtc sync function, to read both xtime.tv_sec and
+ * xtime.tv_nsec. On some processors (i.e. ARM), an atomic read
+ * of >32bits is not possible. So storing the most close value would
+ * slow down the sync API. So here we have the truncated value and
+ * the best guess is to add 0.5s.
+ */
+
+static int __init rtc_hctosys(void)
+{
+ int err;
+ struct rtc_time tm;
+ struct class_device *class_dev = rtc_class_open(CONFIG_RTC_HCTOSYS_DEVICE);
+
+ if (class_dev == NULL) {
+ printk("%s: unable to open rtc device (%s)\n",
+ __FILE__, CONFIG_RTC_HCTOSYS_DEVICE);
+ return -ENODEV;
+ }
+
+ err = rtc_read_time(class_dev, &tm);
+ if (err == 0) {
+ err = rtc_valid_tm(&tm);
+ if (err == 0) {
+ struct timespec tv;
+
+ tv.tv_nsec = NSEC_PER_SEC >> 1;
+
+ rtc_tm_to_time(&tm, &tv.tv_sec);
+
+ do_settimeofday(&tv);
+
+ dev_info(class_dev->dev,
+ "setting the system clock to "
+ "%d-%02d-%02d %02d:%02d:%02d (%u)\n",
+ tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday,
+ tm.tm_hour, tm.tm_min, tm.tm_sec,
+ (unsigned int) tv.tv_sec);
+ }
+ else
+ dev_err(class_dev->dev,
+ "hctosys: invalid date/time\n");
+ }
+ else
+ dev_err(class_dev->dev,
+ "hctosys: unable to read the hardware clock\n");
+
+ rtc_class_close(class_dev);
+
+ return 0;
+}
+
+late_initcall(rtc_hctosys);
--- /dev/null
+/*
+ * RTC subsystem, interface functions
+ *
+ * Copyright (C) 2005 Tower Technologies
+ * Author: Alessandro Zummo <a.zummo@towertech.it>
+ *
+ * based on arch/arm/common/rtctime.c
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#include <linux/rtc.h>
+
+int rtc_read_time(struct class_device *class_dev, struct rtc_time *tm)
+{
+ int err;
+ struct rtc_device *rtc = to_rtc_device(class_dev);
+
+ err = mutex_lock_interruptible(&rtc->ops_lock);
+ if (err)
+ return -EBUSY;
+
+ if (!rtc->ops)
+ err = -ENODEV;
+ else if (!rtc->ops->read_time)
+ err = -EINVAL;
+ else {
+ memset(tm, 0, sizeof(struct rtc_time));
+ err = rtc->ops->read_time(class_dev->dev, tm);
+ }
+
+ mutex_unlock(&rtc->ops_lock);
+ return err;
+}
+EXPORT_SYMBOL_GPL(rtc_read_time);
+
+int rtc_set_time(struct class_device *class_dev, struct rtc_time *tm)
+{
+ int err;
+ struct rtc_device *rtc = to_rtc_device(class_dev);
+
+ err = rtc_valid_tm(tm);
+ if (err != 0)
+ return err;
+
+ err = mutex_lock_interruptible(&rtc->ops_lock);
+ if (err)
+ return -EBUSY;
+
+ if (!rtc->ops)
+ err = -ENODEV;
+ else if (!rtc->ops->set_time)
+ err = -EINVAL;
+ else
+ err = rtc->ops->set_time(class_dev->dev, tm);
+
+ mutex_unlock(&rtc->ops_lock);
+ return err;
+}
+EXPORT_SYMBOL_GPL(rtc_set_time);
+
+int rtc_set_mmss(struct class_device *class_dev, unsigned long secs)
+{
+ int err;
+ struct rtc_device *rtc = to_rtc_device(class_dev);
+
+ err = mutex_lock_interruptible(&rtc->ops_lock);
+ if (err)
+ return -EBUSY;
+
+ if (!rtc->ops)
+ err = -ENODEV;
+ else if (rtc->ops->set_mmss)
+ err = rtc->ops->set_mmss(class_dev->dev, secs);
+ else if (rtc->ops->read_time && rtc->ops->set_time) {
+ struct rtc_time new, old;
+
+ err = rtc->ops->read_time(class_dev->dev, &old);
+ if (err == 0) {
+ rtc_time_to_tm(secs, &new);
+
+ /*
+ * avoid writing when we're going to change the day of
+ * the month. We will retry in the next minute. This
+ * basically means that if the RTC must not drift
+ * by more than 1 minute in 11 minutes.
+ */
+ if (!((old.tm_hour == 23 && old.tm_min == 59) ||
+ (new.tm_hour == 23 && new.tm_min == 59)))
+ err = rtc->ops->set_time(class_dev->dev, &new);
+ }
+ }
+ else
+ err = -EINVAL;
+
+ mutex_unlock(&rtc->ops_lock);
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(rtc_set_mmss);
+
+int rtc_read_alarm(struct class_device *class_dev, struct rtc_wkalrm *alarm)
+{
+ int err;
+ struct rtc_device *rtc = to_rtc_device(class_dev);
+
+ err = mutex_lock_interruptible(&rtc->ops_lock);
+ if (err)
+ return -EBUSY;
+
+ if (rtc->ops == NULL)
+ err = -ENODEV;
+ else if (!rtc->ops->read_alarm)
+ err = -EINVAL;
+ else {
+ memset(alarm, 0, sizeof(struct rtc_wkalrm));
+ err = rtc->ops->read_alarm(class_dev->dev, alarm);
+ }
+
+ mutex_unlock(&rtc->ops_lock);
+ return err;
+}
+EXPORT_SYMBOL_GPL(rtc_read_alarm);
+
+int rtc_set_alarm(struct class_device *class_dev, struct rtc_wkalrm *alarm)
+{
+ int err;
+ struct rtc_device *rtc = to_rtc_device(class_dev);
+
+ err = mutex_lock_interruptible(&rtc->ops_lock);
+ if (err)
+ return -EBUSY;
+
+ if (!rtc->ops)
+ err = -ENODEV;
+ else if (!rtc->ops->set_alarm)
+ err = -EINVAL;
+ else
+ err = rtc->ops->set_alarm(class_dev->dev, alarm);
+
+ mutex_unlock(&rtc->ops_lock);
+ return err;
+}
+EXPORT_SYMBOL_GPL(rtc_set_alarm);
+
+void rtc_update_irq(struct class_device *class_dev,
+ unsigned long num, unsigned long events)
+{
+ struct rtc_device *rtc = to_rtc_device(class_dev);
+
+ spin_lock(&rtc->irq_lock);
+ rtc->irq_data = (rtc->irq_data + (num << 8)) | events;
+ spin_unlock(&rtc->irq_lock);
+
+ spin_lock(&rtc->irq_task_lock);
+ if (rtc->irq_task)
+ rtc->irq_task->func(rtc->irq_task->private_data);
+ spin_unlock(&rtc->irq_task_lock);
+
+ wake_up_interruptible(&rtc->irq_queue);
+ kill_fasync(&rtc->async_queue, SIGIO, POLL_IN);
+}
+EXPORT_SYMBOL_GPL(rtc_update_irq);
+
+struct class_device *rtc_class_open(char *name)
+{
+ struct class_device *class_dev = NULL,
+ *class_dev_tmp;
+
+ down(&rtc_class->sem);
+ list_for_each_entry(class_dev_tmp, &rtc_class->children, node) {
+ if (strncmp(class_dev_tmp->class_id, name, BUS_ID_SIZE) == 0) {
+ class_dev = class_dev_tmp;
+ break;
+ }
+ }
+
+ if (class_dev) {
+ if (!try_module_get(to_rtc_device(class_dev)->owner))
+ class_dev = NULL;
+ }
+ up(&rtc_class->sem);
+
+ return class_dev;
+}
+EXPORT_SYMBOL_GPL(rtc_class_open);
+
+void rtc_class_close(struct class_device *class_dev)
+{
+ module_put(to_rtc_device(class_dev)->owner);
+}
+EXPORT_SYMBOL_GPL(rtc_class_close);
+
+int rtc_irq_register(struct class_device *class_dev, struct rtc_task *task)
+{
+ int retval = -EBUSY;
+ struct rtc_device *rtc = to_rtc_device(class_dev);
+
+ if (task == NULL || task->func == NULL)
+ return -EINVAL;
+
+ spin_lock(&rtc->irq_task_lock);
+ if (rtc->irq_task == NULL) {
+ rtc->irq_task = task;
+ retval = 0;
+ }
+ spin_unlock(&rtc->irq_task_lock);
+
+ return retval;
+}
+EXPORT_SYMBOL_GPL(rtc_irq_register);
+
+void rtc_irq_unregister(struct class_device *class_dev, struct rtc_task *task)
+{
+ struct rtc_device *rtc = to_rtc_device(class_dev);
+
+ spin_lock(&rtc->irq_task_lock);
+ if (rtc->irq_task == task)
+ rtc->irq_task = NULL;
+ spin_unlock(&rtc->irq_task_lock);
+}
+EXPORT_SYMBOL_GPL(rtc_irq_unregister);
+
+int rtc_irq_set_state(struct class_device *class_dev, struct rtc_task *task, int enabled)
+{
+ int err = 0;
+ unsigned long flags;
+ struct rtc_device *rtc = to_rtc_device(class_dev);
+
+ spin_lock_irqsave(&rtc->irq_task_lock, flags);
+ if (rtc->irq_task != task)
+ err = -ENXIO;
+ spin_unlock_irqrestore(&rtc->irq_task_lock, flags);
+
+ if (err == 0)
+ err = rtc->ops->irq_set_state(class_dev->dev, enabled);
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(rtc_irq_set_state);
+
+int rtc_irq_set_freq(struct class_device *class_dev, struct rtc_task *task, int freq)
+{
+ int err = 0, tmp = 0;
+ unsigned long flags;
+ struct rtc_device *rtc = to_rtc_device(class_dev);
+
+ /* allowed range is 2-8192 */
+ if (freq < 2 || freq > 8192)
+ return -EINVAL;
+/*
+ FIXME: this does not belong here, will move where appropriate
+ at a later stage. It cannot hurt right now, trust me :)
+ if ((freq > rtc_max_user_freq) && (!capable(CAP_SYS_RESOURCE)))
+ return -EACCES;
+*/
+ /* check if freq is a power of 2 */
+ while (freq > (1 << tmp))
+ tmp++;
+
+ if (freq != (1 << tmp))
+ return -EINVAL;
+
+ spin_lock_irqsave(&rtc->irq_task_lock, flags);
+ if (rtc->irq_task != task)
+ err = -ENXIO;
+ spin_unlock_irqrestore(&rtc->irq_task_lock, flags);
+
+ if (err == 0) {
+ err = rtc->ops->irq_set_freq(class_dev->dev, freq);
+ if (err == 0)
+ rtc->irq_freq = freq;
+ }
+ return err;
+}
--- /dev/null
+/*
+ * RTC subsystem, dev interface
+ *
+ * Copyright (C) 2005 Tower Technologies
+ * Author: Alessandro Zummo <a.zummo@towertech.it>
+ *
+ * based on arch/arm/common/rtctime.c
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#include <linux/module.h>
+#include <linux/rtc.h>
+
+static struct class *rtc_dev_class;
+static dev_t rtc_devt;
+
+#define RTC_DEV_MAX 16 /* 16 RTCs should be enough for everyone... */
+
+static int rtc_dev_open(struct inode *inode, struct file *file)
+{
+ int err;
+ struct rtc_device *rtc = container_of(inode->i_cdev,
+ struct rtc_device, char_dev);
+ struct rtc_class_ops *ops = rtc->ops;
+
+ /* We keep the lock as long as the device is in use
+ * and return immediately if busy
+ */
+ if (!(mutex_trylock(&rtc->char_lock)))
+ return -EBUSY;
+
+ file->private_data = &rtc->class_dev;
+
+ err = ops->open ? ops->open(rtc->class_dev.dev) : 0;
+ if (err == 0) {
+ spin_lock_irq(&rtc->irq_lock);
+ rtc->irq_data = 0;
+ spin_unlock_irq(&rtc->irq_lock);
+
+ return 0;
+ }
+
+ /* something has gone wrong, release the lock */
+ mutex_unlock(&rtc->char_lock);
+ return err;
+}
+
+
+static ssize_t
+rtc_dev_read(struct file *file, char __user *buf, size_t count, loff_t *ppos)
+{
+ struct rtc_device *rtc = to_rtc_device(file->private_data);
+
+ DECLARE_WAITQUEUE(wait, current);
+ unsigned long data;
+ ssize_t ret;
+
+ if (count < sizeof(unsigned long))
+ return -EINVAL;
+
+ add_wait_queue(&rtc->irq_queue, &wait);
+ do {
+ __set_current_state(TASK_INTERRUPTIBLE);
+
+ spin_lock_irq(&rtc->irq_lock);
+ data = rtc->irq_data;
+ rtc->irq_data = 0;
+ spin_unlock_irq(&rtc->irq_lock);
+
+ if (data != 0) {
+ ret = 0;
+ break;
+ }
+ if (file->f_flags & O_NONBLOCK) {
+ ret = -EAGAIN;
+ break;
+ }
+ if (signal_pending(current)) {
+ ret = -ERESTARTSYS;
+ break;
+ }
+ schedule();
+ } while (1);
+ set_current_state(TASK_RUNNING);
+ remove_wait_queue(&rtc->irq_queue, &wait);
+
+ if (ret == 0) {
+ /* Check for any data updates */
+ if (rtc->ops->read_callback)
+ data = rtc->ops->read_callback(rtc->class_dev.dev, data);
+
+ ret = put_user(data, (unsigned long __user *)buf);
+ if (ret == 0)
+ ret = sizeof(unsigned long);
+ }
+ return ret;
+}
+
+static unsigned int rtc_dev_poll(struct file *file, poll_table *wait)
+{
+ struct rtc_device *rtc = to_rtc_device(file->private_data);
+ unsigned long data;
+
+ poll_wait(file, &rtc->irq_queue, wait);
+
+ data = rtc->irq_data;
+
+ return (data != 0) ? (POLLIN | POLLRDNORM) : 0;
+}
+
+static int rtc_dev_ioctl(struct inode *inode, struct file *file,
+ unsigned int cmd, unsigned long arg)
+{
+ int err = 0;
+ struct class_device *class_dev = file->private_data;
+ struct rtc_device *rtc = to_rtc_device(class_dev);
+ struct rtc_class_ops *ops = rtc->ops;
+ struct rtc_time tm;
+ struct rtc_wkalrm alarm;
+ void __user *uarg = (void __user *) arg;
+
+ /* avoid conflicting IRQ users */
+ if (cmd == RTC_PIE_ON || cmd == RTC_PIE_OFF || cmd == RTC_IRQP_SET) {
+ spin_lock(&rtc->irq_task_lock);
+ if (rtc->irq_task)
+ err = -EBUSY;
+ spin_unlock(&rtc->irq_task_lock);
+
+ if (err < 0)
+ return err;
+ }
+
+ /* try the driver's ioctl interface */
+ if (ops->ioctl) {
+ err = ops->ioctl(class_dev->dev, cmd, arg);
+ if (err != -EINVAL)
+ return err;
+ }
+
+ /* if the driver does not provide the ioctl interface
+ * or if that particular ioctl was not implemented
+ * (-EINVAL), we will try to emulate here.
+ */
+
+ switch (cmd) {
+ case RTC_ALM_READ:
+ err = rtc_read_alarm(class_dev, &alarm);
+ if (err < 0)
+ return err;
+
+ if (copy_to_user(uarg, &alarm.time, sizeof(tm)))
+ return -EFAULT;
+ break;
+
+ case RTC_ALM_SET:
+ if (copy_from_user(&alarm.time, uarg, sizeof(tm)))
+ return -EFAULT;
+
+ alarm.enabled = 0;
+ alarm.pending = 0;
+ alarm.time.tm_mday = -1;
+ alarm.time.tm_mon = -1;
+ alarm.time.tm_year = -1;
+ alarm.time.tm_wday = -1;
+ alarm.time.tm_yday = -1;
+ alarm.time.tm_isdst = -1;
+ err = rtc_set_alarm(class_dev, &alarm);
+ break;
+
+ case RTC_RD_TIME:
+ err = rtc_read_time(class_dev, &tm);
+ if (err < 0)
+ return err;
+
+ if (copy_to_user(uarg, &tm, sizeof(tm)))
+ return -EFAULT;
+ break;
+
+ case RTC_SET_TIME:
+ if (!capable(CAP_SYS_TIME))
+ return -EACCES;
+
+ if (copy_from_user(&tm, uarg, sizeof(tm)))
+ return -EFAULT;
+
+ err = rtc_set_time(class_dev, &tm);
+ break;
+#if 0
+ case RTC_EPOCH_SET:
+#ifndef rtc_epoch
+ /*
+ * There were no RTC clocks before 1900.
+ */
+ if (arg < 1900) {
+ err = -EINVAL;
+ break;
+ }
+ if (!capable(CAP_SYS_TIME)) {
+ err = -EACCES;
+ break;
+ }
+ rtc_epoch = arg;
+ err = 0;
+#endif
+ break;
+
+ case RTC_EPOCH_READ:
+ err = put_user(rtc_epoch, (unsigned long __user *)uarg);
+ break;
+#endif
+ case RTC_WKALM_SET:
+ if (copy_from_user(&alarm, uarg, sizeof(alarm)))
+ return -EFAULT;
+
+ err = rtc_set_alarm(class_dev, &alarm);
+ break;
+
+ case RTC_WKALM_RD:
+ err = rtc_read_alarm(class_dev, &alarm);
+ if (err < 0)
+ return err;
+
+ if (copy_to_user(uarg, &alarm, sizeof(alarm)))
+ return -EFAULT;
+ break;
+
+ default:
+ err = -EINVAL;
+ break;
+ }
+
+ return err;
+}
+
+static int rtc_dev_release(struct inode *inode, struct file *file)
+{
+ struct rtc_device *rtc = to_rtc_device(file->private_data);
+
+ if (rtc->ops->release)
+ rtc->ops->release(rtc->class_dev.dev);
+
+ mutex_unlock(&rtc->char_lock);
+ return 0;
+}
+
+static int rtc_dev_fasync(int fd, struct file *file, int on)
+{
+ struct rtc_device *rtc = to_rtc_device(file->private_data);
+ return fasync_helper(fd, file, on, &rtc->async_queue);
+}
+
+static struct file_operations rtc_dev_fops = {
+ .owner = THIS_MODULE,
+ .llseek = no_llseek,
+ .read = rtc_dev_read,
+ .poll = rtc_dev_poll,
+ .ioctl = rtc_dev_ioctl,
+ .open = rtc_dev_open,
+ .release = rtc_dev_release,
+ .fasync = rtc_dev_fasync,
+};
+
+/* insertion/removal hooks */
+
+static int rtc_dev_add_device(struct class_device *class_dev,
+ struct class_interface *class_intf)
+{
+ int err = 0;
+ struct rtc_device *rtc = to_rtc_device(class_dev);
+
+ if (rtc->id >= RTC_DEV_MAX) {
+ dev_err(class_dev->dev, "too many RTCs\n");
+ return -EINVAL;
+ }
+
+ mutex_init(&rtc->char_lock);
+ spin_lock_init(&rtc->irq_lock);
+ init_waitqueue_head(&rtc->irq_queue);
+
+ cdev_init(&rtc->char_dev, &rtc_dev_fops);
+ rtc->char_dev.owner = rtc->owner;
+
+ if (cdev_add(&rtc->char_dev, MKDEV(MAJOR(rtc_devt), rtc->id), 1)) {
+ cdev_del(&rtc->char_dev);
+ dev_err(class_dev->dev,
+ "failed to add char device %d:%d\n",
+ MAJOR(rtc_devt), rtc->id);
+ return -ENODEV;
+ }
+
+ rtc->rtc_dev = class_device_create(rtc_dev_class, NULL,
+ MKDEV(MAJOR(rtc_devt), rtc->id),
+ class_dev->dev, "rtc%d", rtc->id);
+ if (IS_ERR(rtc->rtc_dev)) {
+ dev_err(class_dev->dev, "cannot create rtc_dev device\n");
+ err = PTR_ERR(rtc->rtc_dev);
+ goto err_cdev_del;
+ }
+
+ dev_info(class_dev->dev, "rtc intf: dev (%d:%d)\n",
+ MAJOR(rtc->rtc_dev->devt),
+ MINOR(rtc->rtc_dev->devt));
+
+ return 0;
+
+err_cdev_del:
+
+ cdev_del(&rtc->char_dev);
+ return err;
+}
+
+static void rtc_dev_remove_device(struct class_device *class_dev,
+ struct class_interface *class_intf)
+{
+ struct rtc_device *rtc = to_rtc_device(class_dev);
+
+ if (rtc->rtc_dev) {
+ dev_dbg(class_dev->dev, "removing char %d:%d\n",
+ MAJOR(rtc->rtc_dev->devt),
+ MINOR(rtc->rtc_dev->devt));
+
+ class_device_unregister(rtc->rtc_dev);
+ cdev_del(&rtc->char_dev);
+ }
+}
+
+/* interface registration */
+
+static struct class_interface rtc_dev_interface = {
+ .add = &rtc_dev_add_device,
+ .remove = &rtc_dev_remove_device,
+};
+
+static int __init rtc_dev_init(void)
+{
+ int err;
+
+ rtc_dev_class = class_create(THIS_MODULE, "rtc-dev");
+ if (IS_ERR(rtc_dev_class))
+ return PTR_ERR(rtc_dev_class);
+
+ err = alloc_chrdev_region(&rtc_devt, 0, RTC_DEV_MAX, "rtc");
+ if (err < 0) {
+ printk(KERN_ERR "%s: failed to allocate char dev region\n",
+ __FILE__);
+ goto err_destroy_class;
+ }
+
+ err = rtc_interface_register(&rtc_dev_interface);
+ if (err < 0) {
+ printk(KERN_ERR "%s: failed to register the interface\n",
+ __FILE__);
+ goto err_unregister_chrdev;
+ }
+
+ return 0;
+
+err_unregister_chrdev:
+ unregister_chrdev_region(rtc_devt, RTC_DEV_MAX);
+
+err_destroy_class:
+ class_destroy(rtc_dev_class);
+
+ return err;
+}
+
+static void __exit rtc_dev_exit(void)
+{
+ class_interface_unregister(&rtc_dev_interface);
+ class_destroy(rtc_dev_class);
+ unregister_chrdev_region(rtc_devt, RTC_DEV_MAX);
+}
+
+module_init(rtc_dev_init);
+module_exit(rtc_dev_exit);
+
+MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>");
+MODULE_DESCRIPTION("RTC class dev interface");
+MODULE_LICENSE("GPL");
--- /dev/null
+/*
+ * An rtc/i2c driver for the Dallas DS1672
+ * Copyright 2005 Alessandro Zummo
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/i2c.h>
+#include <linux/rtc.h>
+
+#define DRV_VERSION "0.2"
+
+/* Addresses to scan: none. This chip cannot be detected. */
+static unsigned short normal_i2c[] = { I2C_CLIENT_END };
+
+/* Insmod parameters */
+I2C_CLIENT_INSMOD;
+
+/* Registers */
+
+#define DS1672_REG_CNT_BASE 0
+#define DS1672_REG_CONTROL 4
+#define DS1672_REG_TRICKLE 5
+
+
+/* Prototypes */
+static int ds1672_probe(struct i2c_adapter *adapter, int address, int kind);
+
+/*
+ * In the routines that deal directly with the ds1672 hardware, we use
+ * rtc_time -- month 0-11, hour 0-23, yr = calendar year-epoch
+ * Epoch is initialized as 2000. Time is set to UTC.
+ */
+static int ds1672_get_datetime(struct i2c_client *client, struct rtc_time *tm)
+{
+ unsigned long time;
+ unsigned char addr = DS1672_REG_CNT_BASE;
+ unsigned char buf[4];
+
+ struct i2c_msg msgs[] = {
+ { client->addr, 0, 1, &addr }, /* setup read ptr */
+ { client->addr, I2C_M_RD, 4, buf }, /* read date */
+ };
+
+ /* read date registers */
+ if ((i2c_transfer(client->adapter, &msgs[0], 2)) != 2) {
+ dev_err(&client->dev, "%s: read error\n", __FUNCTION__);
+ return -EIO;
+ }
+
+ dev_dbg(&client->dev,
+ "%s: raw read data - counters=%02x,%02x,%02x,%02x\n"
+ __FUNCTION__,
+ buf[0], buf[1], buf[2], buf[3]);
+
+ time = (buf[3] << 24) | (buf[2] << 16) | (buf[1] << 8) | buf[0];
+
+ rtc_time_to_tm(time, tm);
+
+ dev_dbg(&client->dev, "%s: tm is secs=%d, mins=%d, hours=%d, "
+ "mday=%d, mon=%d, year=%d, wday=%d\n",
+ __FUNCTION__,
+ tm->tm_sec, tm->tm_min, tm->tm_hour,
+ tm->tm_mday, tm->tm_mon, tm->tm_year, tm->tm_wday);
+
+ return 0;
+}
+
+static int ds1672_set_mmss(struct i2c_client *client, unsigned long secs)
+{
+ int xfer;
+ unsigned char buf[5];
+
+ buf[0] = DS1672_REG_CNT_BASE;
+ buf[1] = secs & 0x000000FF;
+ buf[2] = (secs & 0x0000FF00) >> 8;
+ buf[3] = (secs & 0x00FF0000) >> 16;
+ buf[4] = (secs & 0xFF000000) >> 24;
+
+ xfer = i2c_master_send(client, buf, 5);
+ if (xfer != 5) {
+ dev_err(&client->dev, "%s: send: %d\n", __FUNCTION__, xfer);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int ds1672_set_datetime(struct i2c_client *client, struct rtc_time *tm)
+{
+ unsigned long secs;
+
+ dev_dbg(&client->dev,
+ "%s: secs=%d, mins=%d, hours=%d, ",
+ "mday=%d, mon=%d, year=%d, wday=%d\n",
+ __FUNCTION__,
+ tm->tm_sec, tm->tm_min, tm->tm_hour,
+ tm->tm_mday, tm->tm_mon, tm->tm_year, tm->tm_wday);
+
+ rtc_tm_to_time(tm, &secs);
+
+ return ds1672_set_mmss(client, secs);
+}
+
+static int ds1672_rtc_read_time(struct device *dev, struct rtc_time *tm)
+{
+ return ds1672_get_datetime(to_i2c_client(dev), tm);
+}
+
+static int ds1672_rtc_set_time(struct device *dev, struct rtc_time *tm)
+{
+ return ds1672_set_datetime(to_i2c_client(dev), tm);
+}
+
+static int ds1672_rtc_set_mmss(struct device *dev, unsigned long secs)
+{
+ return ds1672_set_mmss(to_i2c_client(dev), secs);
+}
+
+static struct rtc_class_ops ds1672_rtc_ops = {
+ .read_time = ds1672_rtc_read_time,
+ .set_time = ds1672_rtc_set_time,
+ .set_mmss = ds1672_rtc_set_mmss,
+};
+
+static int ds1672_attach(struct i2c_adapter *adapter)
+{
+ dev_dbg(&adapter->dev, "%s\n", __FUNCTION__);
+ return i2c_probe(adapter, &addr_data, ds1672_probe);
+}
+
+static int ds1672_detach(struct i2c_client *client)
+{
+ int err;
+ struct rtc_device *rtc = i2c_get_clientdata(client);
+
+ dev_dbg(&client->dev, "%s\n", __FUNCTION__);
+
+ if (rtc)
+ rtc_device_unregister(rtc);
+
+ if ((err = i2c_detach_client(client)))
+ return err;
+
+ kfree(client);
+
+ return 0;
+}
+
+static struct i2c_driver ds1672_driver = {
+ .driver = {
+ .name = "ds1672",
+ },
+ .id = I2C_DRIVERID_DS1672,
+ .attach_adapter = &ds1672_attach,
+ .detach_client = &ds1672_detach,
+};
+
+static int ds1672_probe(struct i2c_adapter *adapter, int address, int kind)
+{
+ int err = 0;
+ struct i2c_client *client;
+ struct rtc_device *rtc;
+
+ dev_dbg(&adapter->dev, "%s\n", __FUNCTION__);
+
+ if (!i2c_check_functionality(adapter, I2C_FUNC_I2C)) {
+ err = -ENODEV;
+ goto exit;
+ }
+
+ if (!(client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL))) {
+ err = -ENOMEM;
+ goto exit;
+ }
+
+ /* I2C client */
+ client->addr = address;
+ client->driver = &ds1672_driver;
+ client->adapter = adapter;
+
+ strlcpy(client->name, ds1672_driver.driver.name, I2C_NAME_SIZE);
+
+ /* Inform the i2c layer */
+ if ((err = i2c_attach_client(client)))
+ goto exit_kfree;
+
+ dev_info(&client->dev, "chip found, driver version " DRV_VERSION "\n");
+
+ rtc = rtc_device_register(ds1672_driver.driver.name, &client->dev,
+ &ds1672_rtc_ops, THIS_MODULE);
+
+ if (IS_ERR(rtc)) {
+ err = PTR_ERR(rtc);
+ dev_err(&client->dev,
+ "unable to register the class device\n");
+ goto exit_detach;
+ }
+
+ i2c_set_clientdata(client, rtc);
+
+ return 0;
+
+exit_detach:
+ i2c_detach_client(client);
+
+exit_kfree:
+ kfree(client);
+
+exit:
+ return err;
+}
+
+static int __init ds1672_init(void)
+{
+ return i2c_add_driver(&ds1672_driver);
+}
+
+static void __exit ds1672_exit(void)
+{
+ i2c_del_driver(&ds1672_driver);
+}
+
+MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>");
+MODULE_DESCRIPTION("Dallas/Maxim DS1672 timekeeper driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_VERSION);
+
+module_init(ds1672_init);
+module_exit(ds1672_exit);
--- /dev/null
+/*
+ * A driver for the RTC embedded in the Cirrus Logic EP93XX processors
+ * Copyright (c) 2006 Tower Technologies
+ *
+ * Author: Alessandro Zummo <a.zummo@towertech.it>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/rtc.h>
+#include <linux/platform_device.h>
+#include <asm/hardware.h>
+
+#define EP93XX_RTC_REG(x) (EP93XX_RTC_BASE + (x))
+#define EP93XX_RTC_DATA EP93XX_RTC_REG(0x0000)
+#define EP93XX_RTC_LOAD EP93XX_RTC_REG(0x000C)
+#define EP93XX_RTC_SWCOMP EP93XX_RTC_REG(0x0108)
+
+#define DRV_VERSION "0.2"
+
+static int ep93xx_get_swcomp(struct device *dev, unsigned short *preload,
+ unsigned short *delete)
+{
+ unsigned short comp = __raw_readl(EP93XX_RTC_SWCOMP);
+
+ if (preload)
+ *preload = comp & 0xffff;
+
+ if (delete)
+ *delete = (comp >> 16) & 0x1f;
+
+ return 0;
+}
+
+static int ep93xx_rtc_read_time(struct device *dev, struct rtc_time *tm)
+{
+ unsigned long time = __raw_readl(EP93XX_RTC_DATA);
+
+ rtc_time_to_tm(time, tm);
+ return 0;
+}
+
+static int ep93xx_rtc_set_mmss(struct device *dev, unsigned long secs)
+{
+ __raw_writel(secs + 1, EP93XX_RTC_LOAD);
+ return 0;
+}
+
+static int ep93xx_rtc_set_time(struct device *dev, struct rtc_time *tm)
+{
+ int err;
+ unsigned long secs;
+
+ err = rtc_tm_to_time(tm, &secs);
+ if (err != 0)
+ return err;
+
+ return ep93xx_rtc_set_mmss(dev, secs);
+}
+
+static int ep93xx_rtc_proc(struct device *dev, struct seq_file *seq)
+{
+ unsigned short preload, delete;
+
+ ep93xx_get_swcomp(dev, &preload, &delete);
+
+ seq_printf(seq, "24hr\t\t: yes\n");
+ seq_printf(seq, "preload\t\t: %d\n", preload);
+ seq_printf(seq, "delete\t\t: %d\n", delete);
+
+ return 0;
+}
+
+static struct rtc_class_ops ep93xx_rtc_ops = {
+ .read_time = ep93xx_rtc_read_time,
+ .set_time = ep93xx_rtc_set_time,
+ .set_mmss = ep93xx_rtc_set_mmss,
+ .proc = ep93xx_rtc_proc,
+};
+
+static ssize_t ep93xx_sysfs_show_comp_preload(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ unsigned short preload;
+
+ ep93xx_get_swcomp(dev, &preload, NULL);
+
+ return sprintf(buf, "%d\n", preload);
+}
+static DEVICE_ATTR(comp_preload, S_IRUGO, ep93xx_sysfs_show_comp_preload, NULL);
+
+static ssize_t ep93xx_sysfs_show_comp_delete(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ unsigned short delete;
+
+ ep93xx_get_swcomp(dev, NULL, &delete);
+
+ return sprintf(buf, "%d\n", delete);
+}
+static DEVICE_ATTR(comp_delete, S_IRUGO, ep93xx_sysfs_show_comp_delete, NULL);
+
+
+static int __devinit ep93xx_rtc_probe(struct platform_device *dev)
+{
+ struct rtc_device *rtc = rtc_device_register("ep93xx",
+ &dev->dev, &ep93xx_rtc_ops, THIS_MODULE);
+
+ if (IS_ERR(rtc)) {
+ dev_err(&dev->dev, "unable to register\n");
+ return PTR_ERR(rtc);
+ }
+
+ platform_set_drvdata(dev, rtc);
+
+ device_create_file(&dev->dev, &dev_attr_comp_preload);
+ device_create_file(&dev->dev, &dev_attr_comp_delete);
+
+ return 0;
+}
+
+static int __devexit ep93xx_rtc_remove(struct platform_device *dev)
+{
+ struct rtc_device *rtc = platform_get_drvdata(dev);
+
+ if (rtc)
+ rtc_device_unregister(rtc);
+
+ platform_set_drvdata(dev, NULL);
+
+ return 0;
+}
+
+static struct platform_driver ep93xx_rtc_platform_driver = {
+ .driver = {
+ .name = "ep93xx-rtc",
+ .owner = THIS_MODULE,
+ },
+ .probe = ep93xx_rtc_probe,
+ .remove = __devexit_p(ep93xx_rtc_remove),
+};
+
+static int __init ep93xx_rtc_init(void)
+{
+ return platform_driver_register(&ep93xx_rtc_platform_driver);
+}
+
+static void __exit ep93xx_rtc_exit(void)
+{
+ platform_driver_unregister(&ep93xx_rtc_platform_driver);
+}
+
+MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>");
+MODULE_DESCRIPTION("EP93XX RTC driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_VERSION);
+
+module_init(ep93xx_rtc_init);
+module_exit(ep93xx_rtc_exit);
--- /dev/null
+/*
+ * rtc and date/time utility functions
+ *
+ * Copyright (C) 2005-06 Tower Technologies
+ * Author: Alessandro Zummo <a.zummo@towertech.it>
+ *
+ * based on arch/arm/common/rtctime.c and other bits
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#include <linux/module.h>
+#include <linux/rtc.h>
+
+static const unsigned char rtc_days_in_month[] = {
+ 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
+};
+
+#define LEAPS_THRU_END_OF(y) ((y)/4 - (y)/100 + (y)/400)
+#define LEAP_YEAR(year) ((!(year % 4) && (year % 100)) || !(year % 400))
+
+int rtc_month_days(unsigned int month, unsigned int year)
+{
+ return rtc_days_in_month[month] + (LEAP_YEAR(year) && month == 1);
+}
+EXPORT_SYMBOL(rtc_month_days);
+
+/*
+ * Convert seconds since 01-01-1970 00:00:00 to Gregorian date.
+ */
+void rtc_time_to_tm(unsigned long time, struct rtc_time *tm)
+{
+ register int days, month, year;
+
+ days = time / 86400;
+ time -= days * 86400;
+
+ /* day of the week, 1970-01-01 was a Thursday */
+ tm->tm_wday = (days + 4) % 7;
+
+ year = 1970 + days / 365;
+ days -= (year - 1970) * 365
+ + LEAPS_THRU_END_OF(year - 1)
+ - LEAPS_THRU_END_OF(1970 - 1);
+ if (days < 0) {
+ year -= 1;
+ days += 365 + LEAP_YEAR(year);
+ }
+ tm->tm_year = year - 1900;
+ tm->tm_yday = days + 1;
+
+ for (month = 0; month < 11; month++) {
+ int newdays;
+
+ newdays = days - rtc_month_days(month, year);
+ if (newdays < 0)
+ break;
+ days = newdays;
+ }
+ tm->tm_mon = month;
+ tm->tm_mday = days + 1;
+
+ tm->tm_hour = time / 3600;
+ time -= tm->tm_hour * 3600;
+ tm->tm_min = time / 60;
+ tm->tm_sec = time - tm->tm_min * 60;
+}
+EXPORT_SYMBOL(rtc_time_to_tm);
+
+/*
+ * Does the rtc_time represent a valid date/time?
+ */
+int rtc_valid_tm(struct rtc_time *tm)
+{
+ if (tm->tm_year < 70
+ || tm->tm_mon >= 12
+ || tm->tm_mday < 1
+ || tm->tm_mday > rtc_month_days(tm->tm_mon, tm->tm_year + 1900)
+ || tm->tm_hour >= 24
+ || tm->tm_min >= 60
+ || tm->tm_sec >= 60)
+ return -EINVAL;
+
+ return 0;
+}
+EXPORT_SYMBOL(rtc_valid_tm);
+
+/*
+ * Convert Gregorian date to seconds since 01-01-1970 00:00:00.
+ */
+int rtc_tm_to_time(struct rtc_time *tm, unsigned long *time)
+{
+ *time = mktime(tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
+ tm->tm_hour, tm->tm_min, tm->tm_sec);
+ return 0;
+}
+EXPORT_SYMBOL(rtc_tm_to_time);
+
+MODULE_LICENSE("GPL");
--- /dev/null
+/*
+ * ST M48T86 / Dallas DS12887 RTC driver
+ * Copyright (c) 2006 Tower Technologies
+ *
+ * Author: Alessandro Zummo <a.zummo@towertech.it>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This drivers only supports the clock running in BCD and 24H mode.
+ * If it will be ever adapted to binary and 12H mode, care must be taken
+ * to not introduce bugs.
+ */
+
+#include <linux/module.h>
+#include <linux/rtc.h>
+#include <linux/platform_device.h>
+#include <linux/m48t86.h>
+#include <linux/bcd.h>
+
+#define M48T86_REG_SEC 0x00
+#define M48T86_REG_SECALRM 0x01
+#define M48T86_REG_MIN 0x02
+#define M48T86_REG_MINALRM 0x03
+#define M48T86_REG_HOUR 0x04
+#define M48T86_REG_HOURALRM 0x05
+#define M48T86_REG_DOW 0x06 /* 1 = sunday */
+#define M48T86_REG_DOM 0x07
+#define M48T86_REG_MONTH 0x08 /* 1 - 12 */
+#define M48T86_REG_YEAR 0x09 /* 0 - 99 */
+#define M48T86_REG_A 0x0A
+#define M48T86_REG_B 0x0B
+#define M48T86_REG_C 0x0C
+#define M48T86_REG_D 0x0D
+
+#define M48T86_REG_B_H24 (1 << 1)
+#define M48T86_REG_B_DM (1 << 2)
+#define M48T86_REG_B_SET (1 << 7)
+#define M48T86_REG_D_VRT (1 << 7)
+
+#define DRV_VERSION "0.1"
+
+
+static int m48t86_rtc_read_time(struct device *dev, struct rtc_time *tm)
+{
+ unsigned char reg;
+ struct platform_device *pdev = to_platform_device(dev);
+ struct m48t86_ops *ops = pdev->dev.platform_data;
+
+ reg = ops->readb(M48T86_REG_B);
+
+ if (reg & M48T86_REG_B_DM) {
+ /* data (binary) mode */
+ tm->tm_sec = ops->readb(M48T86_REG_SEC);
+ tm->tm_min = ops->readb(M48T86_REG_MIN);
+ tm->tm_hour = ops->readb(M48T86_REG_HOUR) & 0x3F;
+ tm->tm_mday = ops->readb(M48T86_REG_DOM);
+ /* tm_mon is 0-11 */
+ tm->tm_mon = ops->readb(M48T86_REG_MONTH) - 1;
+ tm->tm_year = ops->readb(M48T86_REG_YEAR) + 100;
+ tm->tm_wday = ops->readb(M48T86_REG_DOW);
+ } else {
+ /* bcd mode */
+ tm->tm_sec = BCD2BIN(ops->readb(M48T86_REG_SEC));
+ tm->tm_min = BCD2BIN(ops->readb(M48T86_REG_MIN));
+ tm->tm_hour = BCD2BIN(ops->readb(M48T86_REG_HOUR) & 0x3F);
+ tm->tm_mday = BCD2BIN(ops->readb(M48T86_REG_DOM));
+ /* tm_mon is 0-11 */
+ tm->tm_mon = BCD2BIN(ops->readb(M48T86_REG_MONTH)) - 1;
+ tm->tm_year = BCD2BIN(ops->readb(M48T86_REG_YEAR)) + 100;
+ tm->tm_wday = BCD2BIN(ops->readb(M48T86_REG_DOW));
+ }
+
+ /* correct the hour if the clock is in 12h mode */
+ if (!(reg & M48T86_REG_B_H24))
+ if (ops->readb(M48T86_REG_HOUR) & 0x80)
+ tm->tm_hour += 12;
+
+ return 0;
+}
+
+static int m48t86_rtc_set_time(struct device *dev, struct rtc_time *tm)
+{
+ unsigned char reg;
+ struct platform_device *pdev = to_platform_device(dev);
+ struct m48t86_ops *ops = pdev->dev.platform_data;
+
+ reg = ops->readb(M48T86_REG_B);
+
+ /* update flag and 24h mode */
+ reg |= M48T86_REG_B_SET | M48T86_REG_B_H24;
+ ops->writeb(reg, M48T86_REG_B);
+
+ if (reg & M48T86_REG_B_DM) {
+ /* data (binary) mode */
+ ops->writeb(tm->tm_sec, M48T86_REG_SEC);
+ ops->writeb(tm->tm_min, M48T86_REG_MIN);
+ ops->writeb(tm->tm_hour, M48T86_REG_HOUR);
+ ops->writeb(tm->tm_mday, M48T86_REG_DOM);
+ ops->writeb(tm->tm_mon + 1, M48T86_REG_MONTH);
+ ops->writeb(tm->tm_year % 100, M48T86_REG_YEAR);
+ ops->writeb(tm->tm_wday, M48T86_REG_DOW);
+ } else {
+ /* bcd mode */
+ ops->writeb(BIN2BCD(tm->tm_sec), M48T86_REG_SEC);
+ ops->writeb(BIN2BCD(tm->tm_min), M48T86_REG_MIN);
+ ops->writeb(BIN2BCD(tm->tm_hour), M48T86_REG_HOUR);
+ ops->writeb(BIN2BCD(tm->tm_mday), M48T86_REG_DOM);
+ ops->writeb(BIN2BCD(tm->tm_mon + 1), M48T86_REG_MONTH);
+ ops->writeb(BIN2BCD(tm->tm_year % 100), M48T86_REG_YEAR);
+ ops->writeb(BIN2BCD(tm->tm_wday), M48T86_REG_DOW);
+ }
+
+ /* update ended */
+ reg &= ~M48T86_REG_B_SET;
+ ops->writeb(reg, M48T86_REG_B);
+
+ return 0;
+}
+
+static int m48t86_rtc_proc(struct device *dev, struct seq_file *seq)
+{
+ unsigned char reg;
+ struct platform_device *pdev = to_platform_device(dev);
+ struct m48t86_ops *ops = pdev->dev.platform_data;
+
+ reg = ops->readb(M48T86_REG_B);
+
+ seq_printf(seq, "24hr\t\t: %s\n",
+ (reg & M48T86_REG_B_H24) ? "yes" : "no");
+
+ seq_printf(seq, "mode\t\t: %s\n",
+ (reg & M48T86_REG_B_DM) ? "binary" : "bcd");
+
+ reg = ops->readb(M48T86_REG_D);
+
+ seq_printf(seq, "battery\t\t: %s\n",
+ (reg & M48T86_REG_D_VRT) ? "ok" : "exhausted");
+
+ return 0;
+}
+
+static struct rtc_class_ops m48t86_rtc_ops = {
+ .read_time = m48t86_rtc_read_time,
+ .set_time = m48t86_rtc_set_time,
+ .proc = m48t86_rtc_proc,
+};
+
+static int __devinit m48t86_rtc_probe(struct platform_device *dev)
+{
+ unsigned char reg;
+ struct m48t86_ops *ops = dev->dev.platform_data;
+ struct rtc_device *rtc = rtc_device_register("m48t86",
+ &dev->dev, &m48t86_rtc_ops, THIS_MODULE);
+
+ if (IS_ERR(rtc)) {
+ dev_err(&dev->dev, "unable to register\n");
+ return PTR_ERR(rtc);
+ }
+
+ platform_set_drvdata(dev, rtc);
+
+ /* read battery status */
+ reg = ops->readb(M48T86_REG_D);
+ dev_info(&dev->dev, "battery %s\n",
+ (reg & M48T86_REG_D_VRT) ? "ok" : "exhausted");
+
+ return 0;
+}
+
+static int __devexit m48t86_rtc_remove(struct platform_device *dev)
+{
+ struct rtc_device *rtc = platform_get_drvdata(dev);
+
+ if (rtc)
+ rtc_device_unregister(rtc);
+
+ platform_set_drvdata(dev, NULL);
+
+ return 0;
+}
+
+static struct platform_driver m48t86_rtc_platform_driver = {
+ .driver = {
+ .name = "rtc-m48t86",
+ .owner = THIS_MODULE,
+ },
+ .probe = m48t86_rtc_probe,
+ .remove = __devexit_p(m48t86_rtc_remove),
+};
+
+static int __init m48t86_rtc_init(void)
+{
+ return platform_driver_register(&m48t86_rtc_platform_driver);
+}
+
+static void __exit m48t86_rtc_exit(void)
+{
+ platform_driver_unregister(&m48t86_rtc_platform_driver);
+}
+
+MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>");
+MODULE_DESCRIPTION("M48T86 RTC driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_VERSION);
+
+module_init(m48t86_rtc_init);
+module_exit(m48t86_rtc_exit);
--- /dev/null
+/*
+ * An I2C driver for the Philips PCF8563 RTC
+ * Copyright 2005-06 Tower Technologies
+ *
+ * Author: Alessandro Zummo <a.zummo@towertech.it>
+ * Maintainers: http://www.nslu2-linux.org/
+ *
+ * based on the other drivers in this same directory.
+ *
+ * http://www.semiconductors.philips.com/acrobat/datasheets/PCF8563-04.pdf
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/i2c.h>
+#include <linux/bcd.h>
+#include <linux/rtc.h>
+
+#define DRV_VERSION "0.4.2"
+
+/* Addresses to scan: none
+ * This chip cannot be reliably autodetected. An empty eeprom
+ * located at 0x51 will pass the validation routine due to
+ * the way the registers are implemented.
+ */
+static unsigned short normal_i2c[] = { I2C_CLIENT_END };
+
+/* Module parameters */
+I2C_CLIENT_INSMOD;
+
+#define PCF8563_REG_ST1 0x00 /* status */
+#define PCF8563_REG_ST2 0x01
+
+#define PCF8563_REG_SC 0x02 /* datetime */
+#define PCF8563_REG_MN 0x03
+#define PCF8563_REG_HR 0x04
+#define PCF8563_REG_DM 0x05
+#define PCF8563_REG_DW 0x06
+#define PCF8563_REG_MO 0x07
+#define PCF8563_REG_YR 0x08
+
+#define PCF8563_REG_AMN 0x09 /* alarm */
+#define PCF8563_REG_AHR 0x0A
+#define PCF8563_REG_ADM 0x0B
+#define PCF8563_REG_ADW 0x0C
+
+#define PCF8563_REG_CLKO 0x0D /* clock out */
+#define PCF8563_REG_TMRC 0x0E /* timer control */
+#define PCF8563_REG_TMR 0x0F /* timer */
+
+#define PCF8563_SC_LV 0x80 /* low voltage */
+#define PCF8563_MO_C 0x80 /* century */
+
+static int pcf8563_probe(struct i2c_adapter *adapter, int address, int kind);
+static int pcf8563_detach(struct i2c_client *client);
+
+/*
+ * In the routines that deal directly with the pcf8563 hardware, we use
+ * rtc_time -- month 0-11, hour 0-23, yr = calendar year-epoch.
+ */
+static int pcf8563_get_datetime(struct i2c_client *client, struct rtc_time *tm)
+{
+ unsigned char buf[13] = { PCF8563_REG_ST1 };
+
+ struct i2c_msg msgs[] = {
+ { client->addr, 0, 1, buf }, /* setup read ptr */
+ { client->addr, I2C_M_RD, 13, buf }, /* read status + date */
+ };
+
+ /* read registers */
+ if ((i2c_transfer(client->adapter, msgs, 2)) != 2) {
+ dev_err(&client->dev, "%s: read error\n", __FUNCTION__);
+ return -EIO;
+ }
+
+ if (buf[PCF8563_REG_SC] & PCF8563_SC_LV)
+ dev_info(&client->dev,
+ "low voltage detected, date/time is not reliable.\n");
+
+ dev_dbg(&client->dev,
+ "%s: raw data is st1=%02x, st2=%02x, sec=%02x, min=%02x, hr=%02x, "
+ "mday=%02x, wday=%02x, mon=%02x, year=%02x\n",
+ __FUNCTION__,
+ buf[0], buf[1], buf[2], buf[3],
+ buf[4], buf[5], buf[6], buf[7],
+ buf[8]);
+
+
+ tm->tm_sec = BCD2BIN(buf[PCF8563_REG_SC] & 0x7F);
+ tm->tm_min = BCD2BIN(buf[PCF8563_REG_MN] & 0x7F);
+ tm->tm_hour = BCD2BIN(buf[PCF8563_REG_HR] & 0x3F); /* rtc hr 0-23 */
+ tm->tm_mday = BCD2BIN(buf[PCF8563_REG_DM] & 0x3F);
+ tm->tm_wday = buf[PCF8563_REG_DW] & 0x07;
+ tm->tm_mon = BCD2BIN(buf[PCF8563_REG_MO] & 0x1F) - 1; /* rtc mn 1-12 */
+ tm->tm_year = BCD2BIN(buf[PCF8563_REG_YR])
+ + (buf[PCF8563_REG_MO] & PCF8563_MO_C ? 100 : 0);
+
+ dev_dbg(&client->dev, "%s: tm is secs=%d, mins=%d, hours=%d, "
+ "mday=%d, mon=%d, year=%d, wday=%d\n",
+ __FUNCTION__,
+ tm->tm_sec, tm->tm_min, tm->tm_hour,
+ tm->tm_mday, tm->tm_mon, tm->tm_year, tm->tm_wday);
+
+ /* the clock can give out invalid datetime, but we cannot return
+ * -EINVAL otherwise hwclock will refuse to set the time on bootup.
+ */
+ if (rtc_valid_tm(tm) < 0)
+ dev_err(&client->dev, "retrieved date/time is not valid.\n");
+
+ return 0;
+}
+
+static int pcf8563_set_datetime(struct i2c_client *client, struct rtc_time *tm)
+{
+ int i, err;
+ unsigned char buf[9];
+
+ dev_dbg(&client->dev, "%s: secs=%d, mins=%d, hours=%d, "
+ "mday=%d, mon=%d, year=%d, wday=%d\n",
+ __FUNCTION__,
+ tm->tm_sec, tm->tm_min, tm->tm_hour,
+ tm->tm_mday, tm->tm_mon, tm->tm_year, tm->tm_wday);
+
+ /* hours, minutes and seconds */
+ buf[PCF8563_REG_SC] = BIN2BCD(tm->tm_sec);
+ buf[PCF8563_REG_MN] = BIN2BCD(tm->tm_min);
+ buf[PCF8563_REG_HR] = BIN2BCD(tm->tm_hour);
+
+ buf[PCF8563_REG_DM] = BIN2BCD(tm->tm_mday);
+
+ /* month, 1 - 12 */
+ buf[PCF8563_REG_MO] = BIN2BCD(tm->tm_mon + 1);
+
+ /* year and century */
+ buf[PCF8563_REG_YR] = BIN2BCD(tm->tm_year % 100);
+ if (tm->tm_year / 100)
+ buf[PCF8563_REG_MO] |= PCF8563_MO_C;
+
+ buf[PCF8563_REG_DW] = tm->tm_wday & 0x07;
+
+ /* write register's data */
+ for (i = 0; i < 7; i++) {
+ unsigned char data[2] = { PCF8563_REG_SC + i,
+ buf[PCF8563_REG_SC + i] };
+
+ err = i2c_master_send(client, data, sizeof(data));
+ if (err != sizeof(data)) {
+ dev_err(&client->dev,
+ "%s: err=%d addr=%02x, data=%02x\n",
+ __FUNCTION__, err, data[0], data[1]);
+ return -EIO;
+ }
+ };
+
+ return 0;
+}
+
+struct pcf8563_limit
+{
+ unsigned char reg;
+ unsigned char mask;
+ unsigned char min;
+ unsigned char max;
+};
+
+static int pcf8563_validate_client(struct i2c_client *client)
+{
+ int i;
+
+ static const struct pcf8563_limit pattern[] = {
+ /* register, mask, min, max */
+ { PCF8563_REG_SC, 0x7F, 0, 59 },
+ { PCF8563_REG_MN, 0x7F, 0, 59 },
+ { PCF8563_REG_HR, 0x3F, 0, 23 },
+ { PCF8563_REG_DM, 0x3F, 0, 31 },
+ { PCF8563_REG_MO, 0x1F, 0, 12 },
+ };
+
+ /* check limits (only registers with bcd values) */
+ for (i = 0; i < ARRAY_SIZE(pattern); i++) {
+ int xfer;
+ unsigned char value;
+ unsigned char buf = pattern[i].reg;
+
+ struct i2c_msg msgs[] = {
+ { client->addr, 0, 1, &buf },
+ { client->addr, I2C_M_RD, 1, &buf },
+ };
+
+ xfer = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
+
+ if (xfer != ARRAY_SIZE(msgs)) {
+ dev_err(&client->adapter->dev,
+ "%s: could not read register 0x%02X\n",
+ __FUNCTION__, pattern[i].reg);
+
+ return -EIO;
+ }
+
+ value = BCD2BIN(buf & pattern[i].mask);
+
+ if (value > pattern[i].max ||
+ value < pattern[i].min) {
+ dev_dbg(&client->adapter->dev,
+ "%s: pattern=%d, reg=%x, mask=0x%02x, min=%d, "
+ "max=%d, value=%d, raw=0x%02X\n",
+ __FUNCTION__, i, pattern[i].reg, pattern[i].mask,
+ pattern[i].min, pattern[i].max,
+ value, buf);
+
+ return -ENODEV;
+ }
+ }
+
+ return 0;
+}
+
+static int pcf8563_rtc_read_time(struct device *dev, struct rtc_time *tm)
+{
+ return pcf8563_get_datetime(to_i2c_client(dev), tm);
+}
+
+static int pcf8563_rtc_set_time(struct device *dev, struct rtc_time *tm)
+{
+ return pcf8563_set_datetime(to_i2c_client(dev), tm);
+}
+
+static int pcf8563_rtc_proc(struct device *dev, struct seq_file *seq)
+{
+ seq_printf(seq, "24hr\t\t: yes\n");
+ return 0;
+}
+
+static struct rtc_class_ops pcf8563_rtc_ops = {
+ .proc = pcf8563_rtc_proc,
+ .read_time = pcf8563_rtc_read_time,
+ .set_time = pcf8563_rtc_set_time,
+};
+
+static int pcf8563_attach(struct i2c_adapter *adapter)
+{
+ return i2c_probe(adapter, &addr_data, pcf8563_probe);
+}
+
+static struct i2c_driver pcf8563_driver = {
+ .driver = {
+ .name = "pcf8563",
+ },
+ .id = I2C_DRIVERID_PCF8563,
+ .attach_adapter = &pcf8563_attach,
+ .detach_client = &pcf8563_detach,
+};
+
+static int pcf8563_probe(struct i2c_adapter *adapter, int address, int kind)
+{
+ struct i2c_client *client;
+ struct rtc_device *rtc;
+
+ int err = 0;
+
+ dev_dbg(&adapter->dev, "%s\n", __FUNCTION__);
+
+ if (!i2c_check_functionality(adapter, I2C_FUNC_I2C)) {
+ err = -ENODEV;
+ goto exit;
+ }
+
+ if (!(client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL))) {
+ err = -ENOMEM;
+ goto exit;
+ }
+
+ client->addr = address;
+ client->driver = &pcf8563_driver;
+ client->adapter = adapter;
+
+ strlcpy(client->name, pcf8563_driver.driver.name, I2C_NAME_SIZE);
+
+ /* Verify the chip is really an PCF8563 */
+ if (kind < 0) {
+ if (pcf8563_validate_client(client) < 0) {
+ err = -ENODEV;
+ goto exit_kfree;
+ }
+ }
+
+ /* Inform the i2c layer */
+ if ((err = i2c_attach_client(client)))
+ goto exit_kfree;
+
+ dev_info(&client->dev, "chip found, driver version " DRV_VERSION "\n");
+
+ rtc = rtc_device_register(pcf8563_driver.driver.name, &client->dev,
+ &pcf8563_rtc_ops, THIS_MODULE);
+
+ if (IS_ERR(rtc)) {
+ err = PTR_ERR(rtc);
+ dev_err(&client->dev,
+ "unable to register the class device\n");
+ goto exit_detach;
+ }
+
+ i2c_set_clientdata(client, rtc);
+
+ return 0;
+
+exit_detach:
+ i2c_detach_client(client);
+
+exit_kfree:
+ kfree(client);
+
+exit:
+ return err;
+}
+
+static int pcf8563_detach(struct i2c_client *client)
+{
+ int err;
+ struct rtc_device *rtc = i2c_get_clientdata(client);
+
+ dev_dbg(&client->dev, "%s\n", __FUNCTION__);
+
+ if (rtc)
+ rtc_device_unregister(rtc);
+
+ if ((err = i2c_detach_client(client)))
+ return err;
+
+ kfree(client);
+
+ return 0;
+}
+
+static int __init pcf8563_init(void)
+{
+ return i2c_add_driver(&pcf8563_driver);
+}
+
+static void __exit pcf8563_exit(void)
+{
+ i2c_del_driver(&pcf8563_driver);
+}
+
+MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>");
+MODULE_DESCRIPTION("Philips PCF8563/Epson RTC8564 RTC driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_VERSION);
+
+module_init(pcf8563_init);
+module_exit(pcf8563_exit);
--- /dev/null
+/*
+ * RTC subsystem, proc interface
+ *
+ * Copyright (C) 2005-06 Tower Technologies
+ * Author: Alessandro Zummo <a.zummo@towertech.it>
+ *
+ * based on arch/arm/common/rtctime.c
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#include <linux/module.h>
+#include <linux/rtc.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+
+static struct class_device *rtc_dev = NULL;
+static DEFINE_MUTEX(rtc_lock);
+
+static int rtc_proc_show(struct seq_file *seq, void *offset)
+{
+ int err;
+ struct class_device *class_dev = seq->private;
+ struct rtc_class_ops *ops = to_rtc_device(class_dev)->ops;
+ struct rtc_wkalrm alrm;
+ struct rtc_time tm;
+
+ err = rtc_read_time(class_dev, &tm);
+ if (err == 0) {
+ seq_printf(seq,
+ "rtc_time\t: %02d:%02d:%02d\n"
+ "rtc_date\t: %04d-%02d-%02d\n",
+ tm.tm_hour, tm.tm_min, tm.tm_sec,
+ tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday);
+ }
+
+ err = rtc_read_alarm(class_dev, &alrm);
+ if (err == 0) {
+ seq_printf(seq, "alrm_time\t: ");
+ if ((unsigned int)alrm.time.tm_hour <= 24)
+ seq_printf(seq, "%02d:", alrm.time.tm_hour);
+ else
+ seq_printf(seq, "**:");
+ if ((unsigned int)alrm.time.tm_min <= 59)
+ seq_printf(seq, "%02d:", alrm.time.tm_min);
+ else
+ seq_printf(seq, "**:");
+ if ((unsigned int)alrm.time.tm_sec <= 59)
+ seq_printf(seq, "%02d\n", alrm.time.tm_sec);
+ else
+ seq_printf(seq, "**\n");
+
+ seq_printf(seq, "alrm_date\t: ");
+ if ((unsigned int)alrm.time.tm_year <= 200)
+ seq_printf(seq, "%04d-", alrm.time.tm_year + 1900);
+ else
+ seq_printf(seq, "****-");
+ if ((unsigned int)alrm.time.tm_mon <= 11)
+ seq_printf(seq, "%02d-", alrm.time.tm_mon + 1);
+ else
+ seq_printf(seq, "**-");
+ if ((unsigned int)alrm.time.tm_mday <= 31)
+ seq_printf(seq, "%02d\n", alrm.time.tm_mday);
+ else
+ seq_printf(seq, "**\n");
+ seq_printf(seq, "alrm_wakeup\t: %s\n",
+ alrm.enabled ? "yes" : "no");
+ seq_printf(seq, "alrm_pending\t: %s\n",
+ alrm.pending ? "yes" : "no");
+ }
+
+ if (ops->proc)
+ ops->proc(class_dev->dev, seq);
+
+ return 0;
+}
+
+static int rtc_proc_open(struct inode *inode, struct file *file)
+{
+ struct class_device *class_dev = PDE(inode)->data;
+
+ if (!try_module_get(THIS_MODULE))
+ return -ENODEV;
+
+ return single_open(file, rtc_proc_show, class_dev);
+}
+
+static int rtc_proc_release(struct inode *inode, struct file *file)
+{
+ int res = single_release(inode, file);
+ module_put(THIS_MODULE);
+ return res;
+}
+
+static struct file_operations rtc_proc_fops = {
+ .open = rtc_proc_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = rtc_proc_release,
+};
+
+static int rtc_proc_add_device(struct class_device *class_dev,
+ struct class_interface *class_intf)
+{
+ mutex_lock(&rtc_lock);
+ if (rtc_dev == NULL) {
+ struct proc_dir_entry *ent;
+
+ rtc_dev = class_dev;
+
+ ent = create_proc_entry("driver/rtc", 0, NULL);
+ if (ent) {
+ struct rtc_device *rtc = to_rtc_device(class_dev);
+
+ ent->proc_fops = &rtc_proc_fops;
+ ent->owner = rtc->owner;
+ ent->data = class_dev;
+
+ dev_info(class_dev->dev, "rtc intf: proc\n");
+ }
+ else
+ rtc_dev = NULL;
+ }
+ mutex_unlock(&rtc_lock);
+
+ return 0;
+}
+
+static void rtc_proc_remove_device(struct class_device *class_dev,
+ struct class_interface *class_intf)
+{
+ mutex_lock(&rtc_lock);
+ if (rtc_dev == class_dev) {
+ remove_proc_entry("driver/rtc", NULL);
+ rtc_dev = NULL;
+ }
+ mutex_unlock(&rtc_lock);
+}
+
+static struct class_interface rtc_proc_interface = {
+ .add = &rtc_proc_add_device,
+ .remove = &rtc_proc_remove_device,
+};
+
+static int __init rtc_proc_init(void)
+{
+ return rtc_interface_register(&rtc_proc_interface);
+}
+
+static void __exit rtc_proc_exit(void)
+{
+ class_interface_unregister(&rtc_proc_interface);
+}
+
+module_init(rtc_proc_init);
+module_exit(rtc_proc_exit);
+
+MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>");
+MODULE_DESCRIPTION("RTC class proc interface");
+MODULE_LICENSE("GPL");
--- /dev/null
+/*
+ * An I2C driver for the Ricoh RS5C372 RTC
+ *
+ * Copyright (C) 2005 Pavel Mironchik <pmironchik@optifacio.net>
+ * Copyright (C) 2006 Tower Technologies
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/i2c.h>
+#include <linux/rtc.h>
+#include <linux/bcd.h>
+
+#define DRV_VERSION "0.2"
+
+/* Addresses to scan */
+static unsigned short normal_i2c[] = { /* 0x32,*/ I2C_CLIENT_END };
+
+/* Insmod parameters */
+I2C_CLIENT_INSMOD;
+
+#define RS5C372_REG_SECS 0
+#define RS5C372_REG_MINS 1
+#define RS5C372_REG_HOURS 2
+#define RS5C372_REG_WDAY 3
+#define RS5C372_REG_DAY 4
+#define RS5C372_REG_MONTH 5
+#define RS5C372_REG_YEAR 6
+#define RS5C372_REG_TRIM 7
+
+#define RS5C372_TRIM_XSL 0x80
+#define RS5C372_TRIM_MASK 0x7F
+
+#define RS5C372_REG_BASE 0
+
+static int rs5c372_attach(struct i2c_adapter *adapter);
+static int rs5c372_detach(struct i2c_client *client);
+static int rs5c372_probe(struct i2c_adapter *adapter, int address, int kind);
+
+static struct i2c_driver rs5c372_driver = {
+ .driver = {
+ .name = "rs5c372",
+ },
+ .attach_adapter = &rs5c372_attach,
+ .detach_client = &rs5c372_detach,
+};
+
+static int rs5c372_get_datetime(struct i2c_client *client, struct rtc_time *tm)
+{
+ unsigned char buf[7] = { RS5C372_REG_BASE };
+
+ /* this implements the 1st reading method, according
+ * to the datasheet. buf[0] is initialized with
+ * address ptr and transmission format register.
+ */
+ struct i2c_msg msgs[] = {
+ { client->addr, 0, 1, buf },
+ { client->addr, I2C_M_RD, 7, buf },
+ };
+
+ if ((i2c_transfer(client->adapter, msgs, 2)) != 2) {
+ dev_err(&client->dev, "%s: read error\n", __FUNCTION__);
+ return -EIO;
+ }
+
+ tm->tm_sec = BCD2BIN(buf[RS5C372_REG_SECS] & 0x7f);
+ tm->tm_min = BCD2BIN(buf[RS5C372_REG_MINS] & 0x7f);
+ tm->tm_hour = BCD2BIN(buf[RS5C372_REG_HOURS] & 0x3f);
+ tm->tm_wday = BCD2BIN(buf[RS5C372_REG_WDAY] & 0x07);
+ tm->tm_mday = BCD2BIN(buf[RS5C372_REG_DAY] & 0x3f);
+
+ /* tm->tm_mon is zero-based */
+ tm->tm_mon = BCD2BIN(buf[RS5C372_REG_MONTH] & 0x1f) - 1;
+
+ /* year is 1900 + tm->tm_year */
+ tm->tm_year = BCD2BIN(buf[RS5C372_REG_YEAR]) + 100;
+
+ dev_dbg(&client->dev, "%s: tm is secs=%d, mins=%d, hours=%d, "
+ "mday=%d, mon=%d, year=%d, wday=%d\n",
+ __FUNCTION__,
+ tm->tm_sec, tm->tm_min, tm->tm_hour,
+ tm->tm_mday, tm->tm_mon, tm->tm_year, tm->tm_wday);
+
+ return 0;
+}
+
+static int rs5c372_set_datetime(struct i2c_client *client, struct rtc_time *tm)
+{
+ unsigned char buf[8] = { RS5C372_REG_BASE };
+
+ dev_dbg(&client->dev,
+ "%s: secs=%d, mins=%d, hours=%d ",
+ "mday=%d, mon=%d, year=%d, wday=%d\n",
+ __FUNCTION__, tm->tm_sec, tm->tm_min, tm->tm_hour,
+ tm->tm_mday, tm->tm_mon, tm->tm_year, tm->tm_wday);
+
+ buf[1] = BIN2BCD(tm->tm_sec);
+ buf[2] = BIN2BCD(tm->tm_min);
+ buf[3] = BIN2BCD(tm->tm_hour);
+ buf[4] = BIN2BCD(tm->tm_wday);
+ buf[5] = BIN2BCD(tm->tm_mday);
+ buf[6] = BIN2BCD(tm->tm_mon + 1);
+ buf[7] = BIN2BCD(tm->tm_year - 100);
+
+ if ((i2c_master_send(client, buf, 8)) != 8) {
+ dev_err(&client->dev, "%s: write error\n", __FUNCTION__);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int rs5c372_get_trim(struct i2c_client *client, int *osc, int *trim)
+{
+ unsigned char buf = RS5C372_REG_TRIM;
+
+ struct i2c_msg msgs[] = {
+ { client->addr, 0, 1, &buf },
+ { client->addr, I2C_M_RD, 1, &buf },
+ };
+
+ if ((i2c_transfer(client->adapter, msgs, 2)) != 2) {
+ dev_err(&client->dev, "%s: read error\n", __FUNCTION__);
+ return -EIO;
+ }
+
+ dev_dbg(&client->dev, "%s: raw trim=%x\n", __FUNCTION__, trim);
+
+ if (osc)
+ *osc = (buf & RS5C372_TRIM_XSL) ? 32000 : 32768;
+
+ if (trim)
+ *trim = buf & RS5C372_TRIM_MASK;
+
+ return 0;
+}
+
+static int rs5c372_rtc_read_time(struct device *dev, struct rtc_time *tm)
+{
+ return rs5c372_get_datetime(to_i2c_client(dev), tm);
+}
+
+static int rs5c372_rtc_set_time(struct device *dev, struct rtc_time *tm)
+{
+ return rs5c372_set_datetime(to_i2c_client(dev), tm);
+}
+
+static int rs5c372_rtc_proc(struct device *dev, struct seq_file *seq)
+{
+ int err, osc, trim;
+
+ seq_printf(seq, "24hr\t\t: yes\n");
+
+ if ((err = rs5c372_get_trim(to_i2c_client(dev), &osc, &trim)) == 0) {
+ seq_printf(seq, "%d.%03d KHz\n", osc / 1000, osc % 1000);
+ seq_printf(seq, "trim\t: %d\n", trim);
+ }
+
+ return 0;
+}
+
+static struct rtc_class_ops rs5c372_rtc_ops = {
+ .proc = rs5c372_rtc_proc,
+ .read_time = rs5c372_rtc_read_time,
+ .set_time = rs5c372_rtc_set_time,
+};
+
+static ssize_t rs5c372_sysfs_show_trim(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int trim;
+
+ if (rs5c372_get_trim(to_i2c_client(dev), NULL, &trim) == 0)
+ return sprintf(buf, "0x%2x\n", trim);
+
+ return 0;
+}
+static DEVICE_ATTR(trim, S_IRUGO, rs5c372_sysfs_show_trim, NULL);
+
+static ssize_t rs5c372_sysfs_show_osc(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int osc;
+
+ if (rs5c372_get_trim(to_i2c_client(dev), &osc, NULL) == 0)
+ return sprintf(buf, "%d.%03d KHz\n", osc / 1000, osc % 1000);
+
+ return 0;
+}
+static DEVICE_ATTR(osc, S_IRUGO, rs5c372_sysfs_show_osc, NULL);
+
+static int rs5c372_attach(struct i2c_adapter *adapter)
+{
+ dev_dbg(&adapter->dev, "%s\n", __FUNCTION__);
+ return i2c_probe(adapter, &addr_data, rs5c372_probe);
+}
+
+static int rs5c372_probe(struct i2c_adapter *adapter, int address, int kind)
+{
+ int err = 0;
+ struct i2c_client *client;
+ struct rtc_device *rtc;
+
+ dev_dbg(&adapter->dev, "%s\n", __FUNCTION__);
+
+ if (!i2c_check_functionality(adapter, I2C_FUNC_I2C)) {
+ err = -ENODEV;
+ goto exit;
+ }
+
+ if (!(client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL))) {
+ err = -ENOMEM;
+ goto exit;
+ }
+
+ /* I2C client */
+ client->addr = address;
+ client->driver = &rs5c372_driver;
+ client->adapter = adapter;
+
+ strlcpy(client->name, rs5c372_driver.driver.name, I2C_NAME_SIZE);
+
+ /* Inform the i2c layer */
+ if ((err = i2c_attach_client(client)))
+ goto exit_kfree;
+
+ dev_info(&client->dev, "chip found, driver version " DRV_VERSION "\n");
+
+ rtc = rtc_device_register(rs5c372_driver.driver.name, &client->dev,
+ &rs5c372_rtc_ops, THIS_MODULE);
+
+ if (IS_ERR(rtc)) {
+ err = PTR_ERR(rtc);
+ dev_err(&client->dev,
+ "unable to register the class device\n");
+ goto exit_detach;
+ }
+
+ i2c_set_clientdata(client, rtc);
+
+ device_create_file(&client->dev, &dev_attr_trim);
+ device_create_file(&client->dev, &dev_attr_osc);
+
+ return 0;
+
+exit_detach:
+ i2c_detach_client(client);
+
+exit_kfree:
+ kfree(client);
+
+exit:
+ return err;
+}
+
+static int rs5c372_detach(struct i2c_client *client)
+{
+ int err;
+ struct rtc_device *rtc = i2c_get_clientdata(client);
+
+ dev_dbg(&client->dev, "%s\n", __FUNCTION__);
+
+ if (rtc)
+ rtc_device_unregister(rtc);
+
+ if ((err = i2c_detach_client(client)))
+ return err;
+
+ kfree(client);
+
+ return 0;
+}
+
+static __init int rs5c372_init(void)
+{
+ return i2c_add_driver(&rs5c372_driver);
+}
+
+static __exit void rs5c372_exit(void)
+{
+ i2c_del_driver(&rs5c372_driver);
+}
+
+module_init(rs5c372_init);
+module_exit(rs5c372_exit);
+
+MODULE_AUTHOR(
+ "Pavel Mironchik <pmironchik@optifacio.net>, "
+ "Alessandro Zummo <a.zummo@towertech.it>");
+MODULE_DESCRIPTION("Ricoh RS5C372 RTC driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_VERSION);
--- /dev/null
+/*
+ * Real Time Clock interface for StrongARM SA1x00 and XScale PXA2xx
+ *
+ * Copyright (c) 2000 Nils Faerber
+ *
+ * Based on rtc.c by Paul Gortmaker
+ *
+ * Original Driver by Nils Faerber <nils@kernelconcepts.de>
+ *
+ * Modifications from:
+ * CIH <cih@coventive.com>
+ * Nicolas Pitre <nico@cam.org>
+ * Andrew Christian <andrew.christian@hp.com>
+ *
+ * Converted to the RTC subsystem and Driver Model
+ * by Richard Purdie <rpurdie@rpsys.net>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/module.h>
+#include <linux/rtc.h>
+#include <linux/init.h>
+#include <linux/fs.h>
+#include <linux/interrupt.h>
+#include <linux/string.h>
+#include <linux/pm.h>
+
+#include <asm/bitops.h>
+#include <asm/hardware.h>
+#include <asm/irq.h>
+#include <asm/rtc.h>
+
+#ifdef CONFIG_ARCH_PXA
+#include <asm/arch/pxa-regs.h>
+#endif
+
+#define TIMER_FREQ CLOCK_TICK_RATE
+#define RTC_DEF_DIVIDER 32768 - 1
+#define RTC_DEF_TRIM 0
+
+static unsigned long rtc_freq = 1024;
+static struct rtc_time rtc_alarm;
+static spinlock_t sa1100_rtc_lock = SPIN_LOCK_UNLOCKED;
+
+static int rtc_update_alarm(struct rtc_time *alrm)
+{
+ struct rtc_time alarm_tm, now_tm;
+ unsigned long now, time;
+ int ret;
+
+ do {
+ now = RCNR;
+ rtc_time_to_tm(now, &now_tm);
+ rtc_next_alarm_time(&alarm_tm, &now_tm, alrm);
+ ret = rtc_tm_to_time(&alarm_tm, &time);
+ if (ret != 0)
+ break;
+
+ RTSR = RTSR & (RTSR_HZE|RTSR_ALE|RTSR_AL);
+ RTAR = time;
+ } while (now != RCNR);
+
+ return ret;
+}
+
+static irqreturn_t sa1100_rtc_interrupt(int irq, void *dev_id,
+ struct pt_regs *regs)
+{
+ struct platform_device *pdev = to_platform_device(dev_id);
+ struct rtc_device *rtc = platform_get_drvdata(pdev);
+ unsigned int rtsr;
+ unsigned long events = 0;
+
+ spin_lock(&sa1100_rtc_lock);
+
+ rtsr = RTSR;
+ /* clear interrupt sources */
+ RTSR = 0;
+ RTSR = (RTSR_AL | RTSR_HZ) & (rtsr >> 2);
+
+ /* clear alarm interrupt if it has occurred */
+ if (rtsr & RTSR_AL)
+ rtsr &= ~RTSR_ALE;
+ RTSR = rtsr & (RTSR_ALE | RTSR_HZE);
+
+ /* update irq data & counter */
+ if (rtsr & RTSR_AL)
+ events |= RTC_AF | RTC_IRQF;
+ if (rtsr & RTSR_HZ)
+ events |= RTC_UF | RTC_IRQF;
+
+ rtc_update_irq(&rtc->class_dev, 1, events);
+
+ if (rtsr & RTSR_AL && rtc_periodic_alarm(&rtc_alarm))
+ rtc_update_alarm(&rtc_alarm);
+
+ spin_unlock(&sa1100_rtc_lock);
+
+ return IRQ_HANDLED;
+}
+
+static int rtc_timer1_count;
+
+static irqreturn_t timer1_interrupt(int irq, void *dev_id,
+ struct pt_regs *regs)
+{
+ struct platform_device *pdev = to_platform_device(dev_id);
+ struct rtc_device *rtc = platform_get_drvdata(pdev);
+
+ /*
+ * If we match for the first time, rtc_timer1_count will be 1.
+ * Otherwise, we wrapped around (very unlikely but
+ * still possible) so compute the amount of missed periods.
+ * The match reg is updated only when the data is actually retrieved
+ * to avoid unnecessary interrupts.
+ */
+ OSSR = OSSR_M1; /* clear match on timer1 */
+
+ rtc_update_irq(&rtc->class_dev, rtc_timer1_count, RTC_PF | RTC_IRQF);
+
+ if (rtc_timer1_count == 1)
+ rtc_timer1_count = (rtc_freq * ((1<<30)/(TIMER_FREQ>>2)));
+
+ return IRQ_HANDLED;
+}
+
+static int sa1100_rtc_read_callback(struct device *dev, int data)
+{
+ if (data & RTC_PF) {
+ /* interpolate missed periods and set match for the next */
+ unsigned long period = TIMER_FREQ/rtc_freq;
+ unsigned long oscr = OSCR;
+ unsigned long osmr1 = OSMR1;
+ unsigned long missed = (oscr - osmr1)/period;
+ data += missed << 8;
+ OSSR = OSSR_M1; /* clear match on timer 1 */
+ OSMR1 = osmr1 + (missed + 1)*period;
+ /* Ensure we didn't miss another match in the mean time.
+ * Here we compare (match - OSCR) 8 instead of 0 --
+ * see comment in pxa_timer_interrupt() for explanation.
+ */
+ while( (signed long)((osmr1 = OSMR1) - OSCR) <= 8 ) {
+ data += 0x100;
+ OSSR = OSSR_M1; /* clear match on timer 1 */
+ OSMR1 = osmr1 + period;
+ }
+ }
+ return data;
+}
+
+static int sa1100_rtc_open(struct device *dev)
+{
+ int ret;
+
+ ret = request_irq(IRQ_RTC1Hz, sa1100_rtc_interrupt, SA_INTERRUPT,
+ "rtc 1Hz", dev);
+ if (ret) {
+ printk(KERN_ERR "rtc: IRQ%d already in use.\n", IRQ_RTC1Hz);
+ goto fail_ui;
+ }
+ ret = request_irq(IRQ_RTCAlrm, sa1100_rtc_interrupt, SA_INTERRUPT,
+ "rtc Alrm", dev);
+ if (ret) {
+ printk(KERN_ERR "rtc: IRQ%d already in use.\n", IRQ_RTCAlrm);
+ goto fail_ai;
+ }
+ ret = request_irq(IRQ_OST1, timer1_interrupt, SA_INTERRUPT,
+ "rtc timer", dev);
+ if (ret) {
+ printk(KERN_ERR "rtc: IRQ%d already in use.\n", IRQ_OST1);
+ goto fail_pi;
+ }
+ return 0;
+
+ fail_pi:
+ free_irq(IRQ_RTCAlrm, NULL);
+ fail_ai:
+ free_irq(IRQ_RTC1Hz, NULL);
+ fail_ui:
+ return ret;
+}
+
+static void sa1100_rtc_release(struct device *dev)
+{
+ spin_lock_irq(&sa1100_rtc_lock);
+ RTSR = 0;
+ OIER &= ~OIER_E1;
+ OSSR = OSSR_M1;
+ spin_unlock_irq(&sa1100_rtc_lock);
+
+ free_irq(IRQ_OST1, dev);
+ free_irq(IRQ_RTCAlrm, dev);
+ free_irq(IRQ_RTC1Hz, dev);
+}
+
+
+static int sa1100_rtc_ioctl(struct device *dev, unsigned int cmd,
+ unsigned long arg)
+{
+ switch(cmd) {
+ case RTC_AIE_OFF:
+ spin_lock_irq(&sa1100_rtc_lock);
+ RTSR &= ~RTSR_ALE;
+ spin_unlock_irq(&sa1100_rtc_lock);
+ return 0;
+ case RTC_AIE_ON:
+ spin_lock_irq(&sa1100_rtc_lock);
+ RTSR |= RTSR_ALE;
+ spin_unlock_irq(&sa1100_rtc_lock);
+ return 0;
+ case RTC_UIE_OFF:
+ spin_lock_irq(&sa1100_rtc_lock);
+ RTSR &= ~RTSR_HZE;
+ spin_unlock_irq(&sa1100_rtc_lock);
+ return 0;
+ case RTC_UIE_ON:
+ spin_lock_irq(&sa1100_rtc_lock);
+ RTSR |= RTSR_HZE;
+ spin_unlock_irq(&sa1100_rtc_lock);
+ return 0;
+ case RTC_PIE_OFF:
+ spin_lock_irq(&sa1100_rtc_lock);
+ OIER &= ~OIER_E1;
+ spin_unlock_irq(&sa1100_rtc_lock);
+ return 0;
+ case RTC_PIE_ON:
+ if ((rtc_freq > 64) && !capable(CAP_SYS_RESOURCE))
+ return -EACCES;
+ spin_lock_irq(&sa1100_rtc_lock);
+ OSMR1 = TIMER_FREQ/rtc_freq + OSCR;
+ OIER |= OIER_E1;
+ rtc_timer1_count = 1;
+ spin_unlock_irq(&sa1100_rtc_lock);
+ return 0;
+ case RTC_IRQP_READ:
+ return put_user(rtc_freq, (unsigned long *)arg);
+ case RTC_IRQP_SET:
+ if (arg < 1 || arg > TIMER_FREQ)
+ return -EINVAL;
+ if ((arg > 64) && (!capable(CAP_SYS_RESOURCE)))
+ return -EACCES;
+ rtc_freq = arg;
+ return 0;
+ }
+ return -EINVAL;
+}
+
+static int sa1100_rtc_read_time(struct device *dev, struct rtc_time *tm)
+{
+ rtc_time_to_tm(RCNR, tm);
+ return 0;
+}
+
+static int sa1100_rtc_set_time(struct device *dev, struct rtc_time *tm)
+{
+ unsigned long time;
+ int ret;
+
+ ret = rtc_tm_to_time(tm, &time);
+ if (ret == 0)
+ RCNR = time;
+ return ret;
+}
+
+static int sa1100_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
+{
+ memcpy(&alrm->time, &rtc_alarm, sizeof(struct rtc_time));
+ alrm->pending = RTSR & RTSR_AL ? 1 : 0;
+ return 0;
+}
+
+static int sa1100_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
+{
+ int ret;
+
+ spin_lock_irq(&sa1100_rtc_lock);
+ ret = rtc_update_alarm(&alrm->time);
+ if (ret == 0) {
+ memcpy(&rtc_alarm, &alrm->time, sizeof(struct rtc_time));
+
+ if (alrm->enabled)
+ enable_irq_wake(IRQ_RTCAlrm);
+ else
+ disable_irq_wake(IRQ_RTCAlrm);
+ }
+ spin_unlock_irq(&sa1100_rtc_lock);
+
+ return ret;
+}
+
+static int sa1100_rtc_proc(struct device *dev, struct seq_file *seq)
+{
+ seq_printf(seq, "trim/divider\t: 0x%08x\n", RTTR);
+ seq_printf(seq, "alarm_IRQ\t: %s\n",
+ (RTSR & RTSR_ALE) ? "yes" : "no" );
+ seq_printf(seq, "update_IRQ\t: %s\n",
+ (RTSR & RTSR_HZE) ? "yes" : "no");
+ seq_printf(seq, "periodic_IRQ\t: %s\n",
+ (OIER & OIER_E1) ? "yes" : "no");
+ seq_printf(seq, "periodic_freq\t: %ld\n", rtc_freq);
+
+ return 0;
+}
+
+static struct rtc_class_ops sa1100_rtc_ops = {
+ .open = sa1100_rtc_open,
+ .read_callback = sa1100_rtc_read_callback,
+ .release = sa1100_rtc_release,
+ .ioctl = sa1100_rtc_ioctl,
+ .read_time = sa1100_rtc_read_time,
+ .set_time = sa1100_rtc_set_time,
+ .read_alarm = sa1100_rtc_read_alarm,
+ .set_alarm = sa1100_rtc_set_alarm,
+ .proc = sa1100_rtc_proc,
+};
+
+static int sa1100_rtc_probe(struct platform_device *pdev)
+{
+ struct rtc_device *rtc;
+
+ /*
+ * According to the manual we should be able to let RTTR be zero
+ * and then a default diviser for a 32.768KHz clock is used.
+ * Apparently this doesn't work, at least for my SA1110 rev 5.
+ * If the clock divider is uninitialized then reset it to the
+ * default value to get the 1Hz clock.
+ */
+ if (RTTR == 0) {
+ RTTR = RTC_DEF_DIVIDER + (RTC_DEF_TRIM << 16);
+ printk(KERN_WARNING "rtc: warning: initializing default clock divider/trim value\n");
+ /* The current RTC value probably doesn't make sense either */
+ RCNR = 0;
+ }
+
+ rtc = rtc_device_register(pdev->name, &pdev->dev, &sa1100_rtc_ops,
+ THIS_MODULE);
+
+ if (IS_ERR(rtc)) {
+ dev_err(&pdev->dev, "Unable to register the RTC device\n");
+ return PTR_ERR(rtc);
+ }
+
+ platform_set_drvdata(pdev, rtc);
+
+ dev_info(&pdev->dev, "SA11xx/PXA2xx RTC Registered\n");
+
+ return 0;
+}
+
+static int sa1100_rtc_remove(struct platform_device *pdev)
+{
+ struct rtc_device *rtc = platform_get_drvdata(pdev);
+
+ if (rtc)
+ rtc_device_unregister(rtc);
+
+ return 0;
+}
+
+static struct platform_driver sa1100_rtc_driver = {
+ .probe = sa1100_rtc_probe,
+ .remove = sa1100_rtc_remove,
+ .driver = {
+ .name = "sa1100-rtc",
+ },
+};
+
+static int __init sa1100_rtc_init(void)
+{
+ return platform_driver_register(&sa1100_rtc_driver);
+}
+
+static void __exit sa1100_rtc_exit(void)
+{
+ platform_driver_unregister(&sa1100_rtc_driver);
+}
+
+module_init(sa1100_rtc_init);
+module_exit(sa1100_rtc_exit);
+
+MODULE_AUTHOR("Richard Purdie <rpurdie@rpsys.net>");
+MODULE_DESCRIPTION("SA11x0/PXA2xx Realtime Clock Driver (RTC)");
+MODULE_LICENSE("GPL");
--- /dev/null
+/*
+ * RTC subsystem, sysfs interface
+ *
+ * Copyright (C) 2005 Tower Technologies
+ * Author: Alessandro Zummo <a.zummo@towertech.it>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#include <linux/module.h>
+#include <linux/rtc.h>
+
+/* device attributes */
+
+static ssize_t rtc_sysfs_show_name(struct class_device *dev, char *buf)
+{
+ return sprintf(buf, "%s\n", to_rtc_device(dev)->name);
+}
+static CLASS_DEVICE_ATTR(name, S_IRUGO, rtc_sysfs_show_name, NULL);
+
+static ssize_t rtc_sysfs_show_date(struct class_device *dev, char *buf)
+{
+ ssize_t retval;
+ struct rtc_time tm;
+
+ retval = rtc_read_time(dev, &tm);
+ if (retval == 0) {
+ retval = sprintf(buf, "%04d-%02d-%02d\n",
+ tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday);
+ }
+
+ return retval;
+}
+static CLASS_DEVICE_ATTR(date, S_IRUGO, rtc_sysfs_show_date, NULL);
+
+static ssize_t rtc_sysfs_show_time(struct class_device *dev, char *buf)
+{
+ ssize_t retval;
+ struct rtc_time tm;
+
+ retval = rtc_read_time(dev, &tm);
+ if (retval == 0) {
+ retval = sprintf(buf, "%02d:%02d:%02d\n",
+ tm.tm_hour, tm.tm_min, tm.tm_sec);
+ }
+
+ return retval;
+}
+static CLASS_DEVICE_ATTR(time, S_IRUGO, rtc_sysfs_show_time, NULL);
+
+static ssize_t rtc_sysfs_show_since_epoch(struct class_device *dev, char *buf)
+{
+ ssize_t retval;
+ struct rtc_time tm;
+
+ retval = rtc_read_time(dev, &tm);
+ if (retval == 0) {
+ unsigned long time;
+ rtc_tm_to_time(&tm, &time);
+ retval = sprintf(buf, "%lu\n", time);
+ }
+
+ return retval;
+}
+static CLASS_DEVICE_ATTR(since_epoch, S_IRUGO, rtc_sysfs_show_since_epoch, NULL);
+
+static struct attribute *rtc_attrs[] = {
+ &class_device_attr_name.attr,
+ &class_device_attr_date.attr,
+ &class_device_attr_time.attr,
+ &class_device_attr_since_epoch.attr,
+ NULL,
+};
+
+static struct attribute_group rtc_attr_group = {
+ .attrs = rtc_attrs,
+};
+
+static int __devinit rtc_sysfs_add_device(struct class_device *class_dev,
+ struct class_interface *class_intf)
+{
+ int err;
+
+ dev_info(class_dev->dev, "rtc intf: sysfs\n");
+
+ err = sysfs_create_group(&class_dev->kobj, &rtc_attr_group);
+ if (err)
+ dev_err(class_dev->dev,
+ "failed to create sysfs attributes\n");
+
+ return err;
+}
+
+static void rtc_sysfs_remove_device(struct class_device *class_dev,
+ struct class_interface *class_intf)
+{
+ sysfs_remove_group(&class_dev->kobj, &rtc_attr_group);
+}
+
+/* interface registration */
+
+static struct class_interface rtc_sysfs_interface = {
+ .add = &rtc_sysfs_add_device,
+ .remove = &rtc_sysfs_remove_device,
+};
+
+static int __init rtc_sysfs_init(void)
+{
+ return rtc_interface_register(&rtc_sysfs_interface);
+}
+
+static void __exit rtc_sysfs_exit(void)
+{
+ class_interface_unregister(&rtc_sysfs_interface);
+}
+
+module_init(rtc_sysfs_init);
+module_exit(rtc_sysfs_exit);
+
+MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>");
+MODULE_DESCRIPTION("RTC class sysfs interface");
+MODULE_LICENSE("GPL");
--- /dev/null
+/*
+ * An RTC test device/driver
+ * Copyright (C) 2005 Tower Technologies
+ * Author: Alessandro Zummo <a.zummo@towertech.it>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/err.h>
+#include <linux/rtc.h>
+#include <linux/platform_device.h>
+
+static struct platform_device *test0 = NULL, *test1 = NULL;
+
+static int test_rtc_read_alarm(struct device *dev,
+ struct rtc_wkalrm *alrm)
+{
+ return 0;
+}
+
+static int test_rtc_set_alarm(struct device *dev,
+ struct rtc_wkalrm *alrm)
+{
+ return 0;
+}
+
+static int test_rtc_read_time(struct device *dev,
+ struct rtc_time *tm)
+{
+ rtc_time_to_tm(get_seconds(), tm);
+ return 0;
+}
+
+static int test_rtc_set_time(struct device *dev,
+ struct rtc_time *tm)
+{
+ return 0;
+}
+
+static int test_rtc_set_mmss(struct device *dev, unsigned long secs)
+{
+ return 0;
+}
+
+static int test_rtc_proc(struct device *dev, struct seq_file *seq)
+{
+ struct platform_device *plat_dev = to_platform_device(dev);
+
+ seq_printf(seq, "24hr\t\t: yes\n");
+ seq_printf(seq, "test\t\t: yes\n");
+ seq_printf(seq, "id\t\t: %d\n", plat_dev->id);
+
+ return 0;
+}
+
+static int test_rtc_ioctl(struct device *dev, unsigned int cmd,
+ unsigned long arg)
+{
+ /* We do support interrupts, they're generated
+ * using the sysfs interface.
+ */
+ switch (cmd) {
+ case RTC_PIE_ON:
+ case RTC_PIE_OFF:
+ case RTC_UIE_ON:
+ case RTC_UIE_OFF:
+ case RTC_AIE_ON:
+ case RTC_AIE_OFF:
+ return 0;
+
+ default:
+ return -EINVAL;
+ }
+}
+
+static struct rtc_class_ops test_rtc_ops = {
+ .proc = test_rtc_proc,
+ .read_time = test_rtc_read_time,
+ .set_time = test_rtc_set_time,
+ .read_alarm = test_rtc_read_alarm,
+ .set_alarm = test_rtc_set_alarm,
+ .set_mmss = test_rtc_set_mmss,
+ .ioctl = test_rtc_ioctl,
+};
+
+static ssize_t test_irq_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return sprintf(buf, "%d\n", 42);
+}
+static ssize_t test_irq_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int retval;
+ struct platform_device *plat_dev = to_platform_device(dev);
+ struct rtc_device *rtc = platform_get_drvdata(plat_dev);
+
+ retval = count;
+ if (strncmp(buf, "tick", 4) == 0)
+ rtc_update_irq(&rtc->class_dev, 1, RTC_PF | RTC_IRQF);
+ else if (strncmp(buf, "alarm", 5) == 0)
+ rtc_update_irq(&rtc->class_dev, 1, RTC_AF | RTC_IRQF);
+ else if (strncmp(buf, "update", 6) == 0)
+ rtc_update_irq(&rtc->class_dev, 1, RTC_UF | RTC_IRQF);
+ else
+ retval = -EINVAL;
+
+ return retval;
+}
+static DEVICE_ATTR(irq, S_IRUGO | S_IWUSR, test_irq_show, test_irq_store);
+
+static int test_probe(struct platform_device *plat_dev)
+{
+ int err;
+ struct rtc_device *rtc = rtc_device_register("test", &plat_dev->dev,
+ &test_rtc_ops, THIS_MODULE);
+ if (IS_ERR(rtc)) {
+ err = PTR_ERR(rtc);
+ dev_err(&plat_dev->dev,
+ "unable to register the class device\n");
+ return err;
+ }
+ device_create_file(&plat_dev->dev, &dev_attr_irq);
+
+ platform_set_drvdata(plat_dev, rtc);
+
+ return 0;
+}
+
+static int __devexit test_remove(struct platform_device *plat_dev)
+{
+ struct rtc_device *rtc = platform_get_drvdata(plat_dev);
+
+ rtc_device_unregister(rtc);
+ device_remove_file(&plat_dev->dev, &dev_attr_irq);
+
+ return 0;
+}
+
+static struct platform_driver test_drv = {
+ .probe = test_probe,
+ .remove = __devexit_p(test_remove),
+ .driver = {
+ .name = "rtc-test",
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init test_init(void)
+{
+ int err;
+
+ if ((err = platform_driver_register(&test_drv)))
+ return err;
+
+ if ((test0 = platform_device_alloc("rtc-test", 0)) == NULL) {
+ err = -ENOMEM;
+ goto exit_driver_unregister;
+ }
+
+ if ((test1 = platform_device_alloc("rtc-test", 1)) == NULL) {
+ err = -ENOMEM;
+ goto exit_free_test0;
+ }
+
+ if ((err = platform_device_add(test0)))
+ goto exit_free_test1;
+
+ if ((err = platform_device_add(test1)))
+ goto exit_device_unregister;
+
+ return 0;
+
+exit_device_unregister:
+ platform_device_unregister(test0);
+
+exit_free_test1:
+ platform_device_put(test1);
+
+exit_free_test0:
+ platform_device_put(test0);
+
+exit_driver_unregister:
+ platform_driver_unregister(&test_drv);
+ return err;
+}
+
+static void __exit test_exit(void)
+{
+ platform_device_unregister(test0);
+ platform_device_unregister(test1);
+ platform_driver_unregister(&test_drv);
+}
+
+MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>");
+MODULE_DESCRIPTION("RTC test driver/device");
+MODULE_LICENSE("GPL");
+
+module_init(test_init);
+module_exit(test_exit);
/*
- * x1205.c - An i2c driver for the Xicor X1205 RTC
- * Copyright 2004 Karen Spearel
- * Copyright 2005 Alessandro Zummo
+ * An i2c driver for the Xicor/Intersil X1205 RTC
+ * Copyright 2004 Karen Spearel
+ * Copyright 2005 Alessandro Zummo
*
- * please send all reports to:
- * kas11 at tampabay dot rr dot com
- * a dot zummo at towertech dot it
+ * please send all reports to:
+ * Karen Spearel <kas111 at gmail dot com>
+ * Alessandro Zummo <a.zummo@towertech.it>
*
- * based on the other drivers in this same directory.
+ * based on a lot of other RTC drivers.
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
*/
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/slab.h>
#include <linux/i2c.h>
-#include <linux/string.h>
#include <linux/bcd.h>
#include <linux/rtc.h>
-#include <linux/list.h>
+#include <linux/delay.h>
-#include <linux/x1205.h>
-
-#define DRV_VERSION "0.9.9"
+#define DRV_VERSION "1.0.6"
/* Addresses to scan: none. This chip is located at
* 0x6f and uses a two bytes register addressing.
/* Insmod parameters */
I2C_CLIENT_INSMOD;
-I2C_CLIENT_MODULE_PARM(hctosys,
- "Set the system time from the hardware clock upon initialization");
/* offsets into CCR area */
static int x1205_attach(struct i2c_adapter *adapter);
static int x1205_detach(struct i2c_client *client);
static int x1205_probe(struct i2c_adapter *adapter, int address, int kind);
-static int x1205_command(struct i2c_client *client, unsigned int cmd,
- void *arg);
static struct i2c_driver x1205_driver = {
- .driver = {
+ .driver = {
.name = "x1205",
},
+ .id = I2C_DRIVERID_X1205,
.attach_adapter = &x1205_attach,
.detach_client = &x1205_detach,
};
-struct x1205_data {
- struct i2c_client client;
- struct list_head list;
- unsigned int epoch;
-};
-
-static const unsigned char days_in_mo[] =
- { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
-
-static LIST_HEAD(x1205_clients);
-
-/* Workaround until the I2C subsytem will allow to send
- * commands to a specific client. This function will send the command
- * to the first client.
- */
-int x1205_do_command(unsigned int cmd, void *arg)
-{
- struct list_head *walk;
- struct list_head *tmp;
- struct x1205_data *data;
-
- list_for_each_safe(walk, tmp, &x1205_clients) {
- data = list_entry(walk, struct x1205_data, list);
- return x1205_command(&data->client, cmd, arg);
- }
-
- return -ENODEV;
-}
-
-#define is_leap(year) \
- ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0))
-
-/* make sure the rtc_time values are in bounds */
-static int x1205_validate_tm(struct rtc_time *tm)
-{
- int year = tm->tm_year + 1900;
-
- if ((tm->tm_year < 70) || (tm->tm_year > 255))
- return -EINVAL;
-
- if ((tm->tm_mon > 11) || (tm->tm_mday == 0))
- return -EINVAL;
-
- if (tm->tm_mday > days_in_mo[tm->tm_mon]
- + ((tm->tm_mon == 1) && is_leap(year)))
- return -EINVAL;
-
- if ((tm->tm_hour >= 24) || (tm->tm_min >= 60) || (tm->tm_sec >= 60))
- return -EINVAL;
-
- return 0;
-}
-
/*
* In the routines that deal directly with the x1205 hardware, we use
* rtc_time -- month 0-11, hour 0-23, yr = calendar year-epoch
* Epoch is initialized as 2000. Time is set to UTC.
*/
static int x1205_get_datetime(struct i2c_client *client, struct rtc_time *tm,
- u8 reg_base)
+ unsigned char reg_base)
{
unsigned char dt_addr[2] = { 0, reg_base };
- static unsigned char sr_addr[2] = { 0, X1205_REG_SR };
- unsigned char buf[8], sr;
+ unsigned char buf[8];
struct i2c_msg msgs[] = {
- { client->addr, 0, 2, sr_addr }, /* setup read ptr */
- { client->addr, I2C_M_RD, 1, &sr }, /* read status */
{ client->addr, 0, 2, dt_addr }, /* setup read ptr */
{ client->addr, I2C_M_RD, 8, buf }, /* read date */
};
- struct x1205_data *data = i2c_get_clientdata(client);
-
- /* read status register */
- if ((i2c_transfer(client->adapter, &msgs[0], 2)) != 2) {
- dev_err(&client->dev, "%s: read error\n", __FUNCTION__);
- return -EIO;
- }
-
- /* check for battery failure */
- if (sr & X1205_SR_RTCF) {
- dev_warn(&client->dev,
- "Clock had a power failure, you must set the date.\n");
- return -EINVAL;
- }
-
/* read date registers */
- if ((i2c_transfer(client->adapter, &msgs[2], 2)) != 2) {
+ if ((i2c_transfer(client->adapter, &msgs[0], 2)) != 2) {
dev_err(&client->dev, "%s: read error\n", __FUNCTION__);
return -EIO;
}
tm->tm_min = BCD2BIN(buf[CCR_MIN]);
tm->tm_hour = BCD2BIN(buf[CCR_HOUR] & 0x3F); /* hr is 0-23 */
tm->tm_mday = BCD2BIN(buf[CCR_MDAY]);
- tm->tm_mon = BCD2BIN(buf[CCR_MONTH]);
- data->epoch = BCD2BIN(buf[CCR_Y2K]) * 100;
- tm->tm_year = BCD2BIN(buf[CCR_YEAR]) + data->epoch - 1900;
+ tm->tm_mon = BCD2BIN(buf[CCR_MONTH]) - 1; /* mon is 0-11 */
+ tm->tm_year = BCD2BIN(buf[CCR_YEAR])
+ + (BCD2BIN(buf[CCR_Y2K]) * 100) - 1900;
tm->tm_wday = buf[CCR_WDAY];
dev_dbg(&client->dev, "%s: tm is secs=%d, mins=%d, hours=%d, "
return 0;
}
+static int x1205_get_status(struct i2c_client *client, unsigned char *sr)
+{
+ static unsigned char sr_addr[2] = { 0, X1205_REG_SR };
+
+ struct i2c_msg msgs[] = {
+ { client->addr, 0, 2, sr_addr }, /* setup read ptr */
+ { client->addr, I2C_M_RD, 1, sr }, /* read status */
+ };
+
+ /* read status register */
+ if ((i2c_transfer(client->adapter, &msgs[0], 2)) != 2) {
+ dev_err(&client->dev, "%s: read error\n", __FUNCTION__);
+ return -EIO;
+ }
+
+ return 0;
+}
+
static int x1205_set_datetime(struct i2c_client *client, struct rtc_time *tm,
int datetoo, u8 reg_base)
{
- int i, err, xfer;
-
+ int i, xfer;
unsigned char buf[8];
static const unsigned char wel[3] = { 0, X1205_REG_SR,
static const unsigned char diswe[3] = { 0, X1205_REG_SR, 0 };
- struct x1205_data *data = i2c_get_clientdata(client);
-
- /* check if all values in the tm struct are correct */
- if ((err = x1205_validate_tm(tm)) < 0)
- return err;
-
- dev_dbg(&client->dev, "%s: secs=%d, mins=%d, hours=%d, "
- "mday=%d, mon=%d, year=%d, wday=%d\n",
+ dev_dbg(&client->dev,
+ "%s: secs=%d, mins=%d, hours=%d\n",
__FUNCTION__,
- tm->tm_sec, tm->tm_min, tm->tm_hour,
- tm->tm_mday, tm->tm_mon, tm->tm_year, tm->tm_wday);
+ tm->tm_sec, tm->tm_min, tm->tm_hour);
buf[CCR_SEC] = BIN2BCD(tm->tm_sec);
buf[CCR_MIN] = BIN2BCD(tm->tm_min);
/* should we also set the date? */
if (datetoo) {
+ dev_dbg(&client->dev,
+ "%s: mday=%d, mon=%d, year=%d, wday=%d\n",
+ __FUNCTION__,
+ tm->tm_mday, tm->tm_mon, tm->tm_year, tm->tm_wday);
+
buf[CCR_MDAY] = BIN2BCD(tm->tm_mday);
- /* month, 0 - 11 */
- buf[CCR_MONTH] = BIN2BCD(tm->tm_mon);
+ /* month, 1 - 12 */
+ buf[CCR_MONTH] = BIN2BCD(tm->tm_mon + 1);
- /* year, since 1900 */
- buf[CCR_YEAR] = BIN2BCD(tm->tm_year + 1900 - data->epoch);
+ /* year, since the rtc epoch*/
+ buf[CCR_YEAR] = BIN2BCD(tm->tm_year % 100);
buf[CCR_WDAY] = tm->tm_wday & 0x07;
- buf[CCR_Y2K] = BIN2BCD(data->epoch / 100);
+ buf[CCR_Y2K] = BIN2BCD(tm->tm_year / 100);
}
/* this sequence is required to unlock the chip */
- xfer = i2c_master_send(client, wel, 3);
- if (xfer != 3) {
+ if ((xfer = i2c_master_send(client, wel, 3)) != 3) {
dev_err(&client->dev, "%s: wel - %d\n", __FUNCTION__, xfer);
return -EIO;
}
- xfer = i2c_master_send(client, rwel, 3);
- if (xfer != 3) {
+ if ((xfer = i2c_master_send(client, rwel, 3)) != 3) {
dev_err(&client->dev, "%s: rwel - %d\n", __FUNCTION__, xfer);
return -EIO;
}
};
/* disable further writes */
- xfer = i2c_master_send(client, diswe, 3);
- if (xfer != 3) {
+ if ((xfer = i2c_master_send(client, diswe, 3)) != 3) {
dev_err(&client->dev, "%s: diswe - %d\n", __FUNCTION__, xfer);
return -EIO;
}
return 0;
}
+static int x1205_fix_osc(struct i2c_client *client)
+{
+ int err;
+ struct rtc_time tm;
+
+ tm.tm_hour = tm.tm_min = tm.tm_sec = 0;
+
+ if ((err = x1205_set_datetime(client, &tm, 0, X1205_CCR_BASE)) < 0)
+ dev_err(&client->dev,
+ "unable to restart the oscillator\n");
+
+ return err;
+}
+
static int x1205_get_dtrim(struct i2c_client *client, int *trim)
{
unsigned char dtr;
return 0;
}
-static int x1205_hctosys(struct i2c_client *client)
-{
- int err;
-
- struct rtc_time tm;
- struct timespec tv;
-
- err = x1205_command(client, X1205_CMD_GETDATETIME, &tm);
-
- if (err) {
- dev_err(&client->dev,
- "Unable to set the system clock\n");
- return err;
- }
-
- /* IMPORTANT: the RTC only stores whole seconds. It is arbitrary
- * whether it stores the most close value or the value with partial
- * seconds truncated. However, it is important that we use it to store
- * the truncated value. This is because otherwise it is necessary,
- * in an rtc sync function, to read both xtime.tv_sec and
- * xtime.tv_nsec. On some processors (i.e. ARM), an atomic read
- * of >32bits is not possible. So storing the most close value would
- * slow down the sync API. So here we have the truncated value and
- * the best guess is to add 0.5s.
- */
-
- tv.tv_nsec = NSEC_PER_SEC >> 1;
-
- /* WARNING: this is not the C library 'mktime' call, it is a built in
- * inline function from include/linux/time.h. It expects (requires)
- * the month to be in the range 1-12
- */
-
- tv.tv_sec = mktime(tm.tm_year + 1900, tm.tm_mon + 1,
- tm.tm_mday, tm.tm_hour,
- tm.tm_min, tm.tm_sec);
-
- do_settimeofday(&tv);
-
- dev_info(&client->dev,
- "setting the system clock to %d-%d-%d %d:%d:%d\n",
- tm.tm_year + 1900, tm.tm_mon + 1,
- tm.tm_mday, tm.tm_hour, tm.tm_min,
- tm.tm_sec);
-
- return 0;
-}
-
struct x1205_limit
{
- unsigned char reg;
- unsigned char mask;
- unsigned char min;
- unsigned char max;
+ unsigned char reg, mask, min, max;
};
static int x1205_validate_client(struct i2c_client *client)
{ client->addr, I2C_M_RD, 1, &buf },
};
- xfer = i2c_transfer(client->adapter, msgs, 2);
- if (xfer != 2) {
+ if ((xfer = i2c_transfer(client->adapter, msgs, 2)) != 2) {
dev_err(&client->adapter->dev,
"%s: could not read register %x\n",
- __FUNCTION__, addr[1]);
+ __FUNCTION__, probe_zero_pattern[i]);
return -EIO;
}
if ((buf & probe_zero_pattern[i+1]) != 0) {
dev_err(&client->adapter->dev,
"%s: register=%02x, zero pattern=%d, value=%x\n",
- __FUNCTION__, addr[1], i, buf);
+ __FUNCTION__, probe_zero_pattern[i], i, buf);
return -ENODEV;
}
{ client->addr, I2C_M_RD, 1, ® },
};
- xfer = i2c_transfer(client->adapter, msgs, 2);
-
- if (xfer != 2) {
+ if ((xfer = i2c_transfer(client->adapter, msgs, 2)) != 2) {
dev_err(&client->adapter->dev,
"%s: could not read register %x\n",
- __FUNCTION__, addr[1]);
+ __FUNCTION__, probe_limits_pattern[i].reg);
return -EIO;
}
value < probe_limits_pattern[i].min) {
dev_dbg(&client->adapter->dev,
"%s: register=%x, lim pattern=%d, value=%d\n",
- __FUNCTION__, addr[1], i, value);
+ __FUNCTION__, probe_limits_pattern[i].reg,
+ i, value);
return -ENODEV;
}
return 0;
}
-static int x1205_attach(struct i2c_adapter *adapter)
+static int x1205_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
{
- dev_dbg(&adapter->dev, "%s\n", __FUNCTION__);
+ return x1205_get_datetime(to_i2c_client(dev),
+ &alrm->time, X1205_ALM0_BASE);
+}
- return i2c_probe(adapter, &addr_data, x1205_probe);
+static int x1205_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
+{
+ return x1205_set_datetime(to_i2c_client(dev),
+ &alrm->time, 1, X1205_ALM0_BASE);
}
-int x1205_direct_attach(int adapter_id,
- struct i2c_client_address_data *address_data)
+static int x1205_rtc_read_time(struct device *dev, struct rtc_time *tm)
{
- int err;
- struct i2c_adapter *adapter = i2c_get_adapter(adapter_id);
+ return x1205_get_datetime(to_i2c_client(dev),
+ tm, X1205_CCR_BASE);
+}
- if (adapter) {
- err = i2c_probe(adapter,
- address_data, x1205_probe);
+static int x1205_rtc_set_time(struct device *dev, struct rtc_time *tm)
+{
+ return x1205_set_datetime(to_i2c_client(dev),
+ tm, 1, X1205_CCR_BASE);
+}
- i2c_put_adapter(adapter);
+static int x1205_rtc_proc(struct device *dev, struct seq_file *seq)
+{
+ int err, dtrim, atrim;
- return err;
- }
+ seq_printf(seq, "24hr\t\t: yes\n");
- return -ENODEV;
+ if ((err = x1205_get_dtrim(to_i2c_client(dev), &dtrim)) == 0)
+ seq_printf(seq, "digital_trim\t: %d ppm\n", dtrim);
+
+ if ((err = x1205_get_atrim(to_i2c_client(dev), &atrim)) == 0)
+ seq_printf(seq, "analog_trim\t: %d.%02d pF\n",
+ atrim / 1000, atrim % 1000);
+ return 0;
}
-static int x1205_probe(struct i2c_adapter *adapter, int address, int kind)
+static struct rtc_class_ops x1205_rtc_ops = {
+ .proc = x1205_rtc_proc,
+ .read_time = x1205_rtc_read_time,
+ .set_time = x1205_rtc_set_time,
+ .read_alarm = x1205_rtc_read_alarm,
+ .set_alarm = x1205_rtc_set_alarm,
+};
+
+static ssize_t x1205_sysfs_show_atrim(struct device *dev,
+ struct device_attribute *attr, char *buf)
{
- struct i2c_client *client;
- struct x1205_data *data;
+ int atrim;
+
+ if (x1205_get_atrim(to_i2c_client(dev), &atrim) == 0)
+ return sprintf(buf, "%d.%02d pF\n",
+ atrim / 1000, atrim % 1000);
+ return 0;
+}
+static DEVICE_ATTR(atrim, S_IRUGO, x1205_sysfs_show_atrim, NULL);
+
+static ssize_t x1205_sysfs_show_dtrim(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int dtrim;
+
+ if (x1205_get_dtrim(to_i2c_client(dev), &dtrim) == 0)
+ return sprintf(buf, "%d ppm\n", dtrim);
+
+ return 0;
+}
+static DEVICE_ATTR(dtrim, S_IRUGO, x1205_sysfs_show_dtrim, NULL);
+static int x1205_attach(struct i2c_adapter *adapter)
+{
+ dev_dbg(&adapter->dev, "%s\n", __FUNCTION__);
+ return i2c_probe(adapter, &addr_data, x1205_probe);
+}
+
+static int x1205_probe(struct i2c_adapter *adapter, int address, int kind)
+{
int err = 0;
+ unsigned char sr;
+ struct i2c_client *client;
+ struct rtc_device *rtc;
dev_dbg(&adapter->dev, "%s\n", __FUNCTION__);
goto exit;
}
- if (!(data = kzalloc(sizeof(struct x1205_data), GFP_KERNEL))) {
+ if (!(client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL))) {
err = -ENOMEM;
goto exit;
}
- /* Initialize our structures */
- data->epoch = 2000;
-
- client = &data->client;
+ /* I2C client */
client->addr = address;
client->driver = &x1205_driver;
client->adapter = adapter;
- strlcpy(client->name, "x1205", I2C_NAME_SIZE);
-
- i2c_set_clientdata(client, data);
+ strlcpy(client->name, x1205_driver.driver.name, I2C_NAME_SIZE);
/* Verify the chip is really an X1205 */
if (kind < 0) {
if ((err = i2c_attach_client(client)))
goto exit_kfree;
- list_add(&data->list, &x1205_clients);
-
dev_info(&client->dev, "chip found, driver version " DRV_VERSION "\n");
- /* If requested, set the system time */
- if (hctosys)
- x1205_hctosys(client);
+ rtc = rtc_device_register(x1205_driver.driver.name, &client->dev,
+ &x1205_rtc_ops, THIS_MODULE);
+
+ if (IS_ERR(rtc)) {
+ err = PTR_ERR(rtc);
+ dev_err(&client->dev,
+ "unable to register the class device\n");
+ goto exit_detach;
+ }
+
+ i2c_set_clientdata(client, rtc);
+
+ /* Check for power failures and eventualy enable the osc */
+ if ((err = x1205_get_status(client, &sr)) == 0) {
+ if (sr & X1205_SR_RTCF) {
+ dev_err(&client->dev,
+ "power failure detected, "
+ "please set the clock\n");
+ udelay(50);
+ x1205_fix_osc(client);
+ }
+ }
+ else
+ dev_err(&client->dev, "couldn't read status\n");
+
+ device_create_file(&client->dev, &dev_attr_atrim);
+ device_create_file(&client->dev, &dev_attr_dtrim);
return 0;
+exit_detach:
+ i2c_detach_client(client);
+
exit_kfree:
- kfree(data);
+ kfree(client);
exit:
return err;
static int x1205_detach(struct i2c_client *client)
{
int err;
- struct x1205_data *data = i2c_get_clientdata(client);
+ struct rtc_device *rtc = i2c_get_clientdata(client);
dev_dbg(&client->dev, "%s\n", __FUNCTION__);
+ if (rtc)
+ rtc_device_unregister(rtc);
+
if ((err = i2c_detach_client(client)))
return err;
- list_del(&data->list);
-
- kfree(data);
+ kfree(client);
return 0;
}
-static int x1205_command(struct i2c_client *client, unsigned int cmd,
- void *param)
-{
- if (param == NULL)
- return -EINVAL;
-
- if (!capable(CAP_SYS_TIME))
- return -EACCES;
-
- dev_dbg(&client->dev, "%s: cmd=%d\n", __FUNCTION__, cmd);
-
- switch (cmd) {
- case X1205_CMD_GETDATETIME:
- return x1205_get_datetime(client, param, X1205_CCR_BASE);
-
- case X1205_CMD_SETTIME:
- return x1205_set_datetime(client, param, 0,
- X1205_CCR_BASE);
-
- case X1205_CMD_SETDATETIME:
- return x1205_set_datetime(client, param, 1,
- X1205_CCR_BASE);
-
- case X1205_CMD_GETALARM:
- return x1205_get_datetime(client, param, X1205_ALM0_BASE);
-
- case X1205_CMD_SETALARM:
- return x1205_set_datetime(client, param, 1,
- X1205_ALM0_BASE);
-
- case X1205_CMD_GETDTRIM:
- return x1205_get_dtrim(client, param);
-
- case X1205_CMD_GETATRIM:
- return x1205_get_atrim(client, param);
-
- default:
- return -EINVAL;
- }
-}
-
static int __init x1205_init(void)
{
return i2c_add_driver(&x1205_driver);
}
MODULE_AUTHOR(
- "Karen Spearel <kas11@tampabay.rr.com>, "
+ "Karen Spearel <kas111 at gmail dot com>, "
"Alessandro Zummo <a.zummo@towertech.it>");
-MODULE_DESCRIPTION("Xicor X1205 RTC driver");
+MODULE_DESCRIPTION("Xicor/Intersil X1205 RTC driver");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRV_VERSION);
-EXPORT_SYMBOL_GPL(x1205_do_command);
-EXPORT_SYMBOL_GPL(x1205_direct_attach);
-
module_init(x1205_init);
module_exit(x1205_exit);
tw_dev->free_tail = (tw_dev->free_tail + 1) % TW_Q_LENGTH;
} /* End twa_free_request_id() */
-/* This function will get parameter table entires from the firmware */
+/* This function will get parameter table entries from the firmware */
static void *twa_get_param(TW_Device_Extension *tw_dev, int request_id, int table_id, int parameter_id, int parameter_size_bytes)
{
TW_Command_Full *full_command_packet;
#include <linux/stat.h>
#include <linux/pci.h>
#include <linux/spinlock.h>
+#include <linux/jiffies.h>
+#include <linux/dma-mapping.h>
#include <scsi/scsicam.h>
#include <asm/dma.h>
if (pci_enable_device(PCI_Device))
continue;
- if (pci_set_dma_mask(PCI_Device, (u64) 0xffffffff))
+ if (pci_set_dma_mask(PCI_Device, DMA_32BIT_MASK ))
continue;
Bus = PCI_Device->bus->number;
if (pci_enable_device(PCI_Device))
continue;
- if (pci_set_dma_mask(PCI_Device, (u64) 0xffffffff))
+ if (pci_set_dma_mask(PCI_Device, DMA_32BIT_MASK))
continue;
Bus = PCI_Device->bus->number;
if (pci_enable_device(PCI_Device))
continue;
- if (pci_set_dma_mask(PCI_Device, (u64) 0xffffffff))
+ if (pci_set_dma_mask(PCI_Device, DMA_32BIT_MASK))
continue;
Bus = PCI_Device->bus->number;
*/
if (HostAdapter->ActiveCommands[TargetID] == 0)
HostAdapter->LastSequencePoint[TargetID] = jiffies;
- else if (jiffies - HostAdapter->LastSequencePoint[TargetID] > 4 * HZ) {
+ else if (time_after(jiffies, HostAdapter->LastSequencePoint[TargetID] + 4 * HZ)) {
HostAdapter->LastSequencePoint[TargetID] = jiffies;
QueueTag = BusLogic_OrderedQueueTag;
}
#include <linux/string.h>
#include <linux/ioport.h>
#include <linux/slab.h>
+#include <linux/dma-mapping.h>
#include <asm/io.h>
#include <asm/irq.h>
if (pci_enable_device(pdev))
goto out;
- if (pci_set_dma_mask(pdev, 0xffffffffULL)) {
+ if (pci_set_dma_mask(pdev, DMA_32BIT_MASK)) {
printk(KERN_WARNING "Unable to set 32bit DMA "
"on inia100 adapter, ignoring.\n");
goto out_disable_device;
#include <linux/slab.h>
#include <linux/completion.h>
#include <linux/blkdev.h>
+#include <linux/dma-mapping.h>
#include <asm/semaphore.h>
#include <asm/uaccess.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
+#include <linux/dma-mapping.h>
#include <linux/syscalls.h>
#include <linux/delay.h>
#include <linux/smp_lock.h>
* to driver communication memory to be allocated below 2gig
*/
if (aac_drivers[index].quirks & AAC_QUIRK_31BIT)
- if (pci_set_dma_mask(pdev, 0x7FFFFFFFULL) ||
- pci_set_consistent_dma_mask(pdev, 0x7FFFFFFFULL))
+ if (pci_set_dma_mask(pdev, DMA_31BIT_MASK) ||
+ pci_set_consistent_dma_mask(pdev, DMA_31BIT_MASK))
goto out;
pci_set_master(pdev);
#include <linux/spinlock.h>
#include <linux/pci.h>
#include <linux/blkdev.h>
+#include <linux/dma-mapping.h>
#include <asm/system.h>
#include <asm/io.h>
if (pci_enable_device(pdev))
return -EIO;
- if (!pci_set_dma_mask(pdev, 0xFFFFFFFFUL)) {
+ if (!pci_set_dma_mask(pdev, DMA_32BIT_MASK)) {
printk(KERN_INFO "atp870u: use 32bit DMA mask.\n");
} else {
printk(KERN_ERR "atp870u: DMA mask required but not available.\n");
#include <linux/reboot.h>
#include <linux/spinlock.h>
#include <linux/smp_lock.h>
+#include <linux/dma-mapping.h>
#include <linux/timer.h>
#include <linux/string.h>
}
pci_set_master(pDev);
- if (pci_set_dma_mask(pDev, 0xffffffffffffffffULL) &&
- pci_set_dma_mask(pDev, 0xffffffffULL))
+ if (pci_set_dma_mask(pDev, DMA_64BIT_MASK) &&
+ pci_set_dma_mask(pDev, DMA_32BIT_MASK))
return -EINVAL;
base_addr0_phys = pci_resource_start(pDev,0);
#include <linux/init.h>
#include <linux/ctype.h>
#include <linux/spinlock.h>
+#include <linux/dma-mapping.h>
#include <asm/byteorder.h>
#include <asm/dma.h>
#include <asm/io.h>
if (ha->pdev) {
pci_set_master(ha->pdev);
- if (pci_set_dma_mask(ha->pdev, 0xffffffff))
+ if (pci_set_dma_mask(ha->pdev, DMA_32BIT_MASK))
printk("%s: warning, pci_set_dma_mask failed.\n",
ha->board_name);
}
#include <linux/proc_fs.h>
#include <linux/time.h>
#include <linux/timer.h>
+#include <linux/dma-mapping.h>
#ifdef GDTH_RTC
#include <linux/mc146818rtc.h>
#endif
static struct notifier_block gdth_notifier = {
gdth_halt, NULL, 0
};
-
+static int notifier_disabled = 0;
static void gdth_delay(int milliseconds)
{
if (!(ha->cache_feat & ha->raw_feat & ha->screen_feat &GDT_64BIT)||
/* 64-bit DMA only supported from FW >= x.43 */
(!ha->dma64_support)) {
- if (pci_set_dma_mask(pcistr[ctr].pdev, 0xffffffff)) {
+ if (pci_set_dma_mask(pcistr[ctr].pdev, DMA_32BIT_MASK)) {
printk(KERN_WARNING "GDT-PCI %d: Unable to set 32-bit DMA\n", hanum);
err = TRUE;
}
} else {
shp->max_cmd_len = 16;
- if (!pci_set_dma_mask(pcistr[ctr].pdev, 0xffffffffffffffffULL)) {
+ if (!pci_set_dma_mask(pcistr[ctr].pdev, DMA_64BIT_MASK)) {
printk("GDT-PCI %d: 64-bit DMA enabled\n", hanum);
- } else if (pci_set_dma_mask(pcistr[ctr].pdev, 0xffffffff)) {
+ } else if (pci_set_dma_mask(pcistr[ctr].pdev, DMA_32BIT_MASK)) {
printk(KERN_WARNING "GDT-PCI %d: Unable to set 64/32-bit DMA\n", hanum);
err = TRUE;
}
add_timer(&gdth_timer);
#endif
major = register_chrdev(0,"gdth",&gdth_fops);
+ notifier_disabled = 0;
register_reboot_notifier(&gdth_notifier);
}
gdth_polling = FALSE;
return gdth_ctr_vcount;
}
-
static int gdth_release(struct Scsi_Host *shp)
{
int hanum;
char cmnd[MAX_COMMAND_SIZE];
#endif
+ if (notifier_disabled)
+ return NOTIFY_OK;
+
TRACE2(("gdth_halt() event %d\n",(int)event));
if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF)
return NOTIFY_DONE;
+ notifier_disabled = 1;
printk("GDT-HA: Flushing all host drives .. ");
for (hanum = 0; hanum < gdth_ctr_count; ++hanum) {
gdth_flush(hanum);
#ifdef GDTH_STATISTICS
del_timer(&gdth_timer);
#endif
- unregister_reboot_notifier(&gdth_notifier);
return NOTIFY_OK;
}
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/jiffies.h>
+#include <linux/dma-mapping.h>
#include <asm/io.h>
#include <scsi/scsi.h>
if (((dRegValue & 0xFF00) >> 8) == 0xFF)
dRegValue = 0;
wBIOS = (wBIOS << 8) + ((UWORD) ((dRegValue & 0xFF00) >> 8));
- if (pci_set_dma_mask(pDev, 0xffffffff)) {
+ if (pci_set_dma_mask(pDev, DMA_32BIT_MASK)) {
printk(KERN_WARNING
"i91u: Could not set 32 bit DMA mask\n");
continue;
#include <linux/blkdev.h>
#include <linux/types.h>
+#include <linux/dma-mapping.h>
#include <scsi/sg.h>
* are guaranteed to be < 4G.
*/
if (IPS_ENABLE_DMA64 && IPS_HAS_ENH_SGLIST(ha) &&
- !pci_set_dma_mask(ha->pcidev, 0xffffffffffffffffULL)) {
+ !pci_set_dma_mask(ha->pcidev, DMA_64BIT_MASK)) {
(ha)->flags |= IPS_HA_ENH_SG;
} else {
- if (pci_set_dma_mask(ha->pcidev, 0xffffffffULL) != 0) {
+ if (pci_set_dma_mask(ha->pcidev, DMA_32BIT_MASK) != 0) {
printk(KERN_WARNING "Unable to set DMA Mask\n");
return ips_abort_init(ha, index);
}
#include <linux/interrupt.h>
#include <linux/pci.h>
#include <linux/init.h>
+#include <linux/dma-mapping.h>
#include <scsi/scsicam.h>
#include "scsi.h"
memcpy(*pdev, adapter->dev, sizeof(struct pci_dev));
- if( pci_set_dma_mask(*pdev, 0xffffffff) != 0 ) {
+ if( pci_set_dma_mask(*pdev, DMA_32BIT_MASK) != 0 ) {
kfree(*pdev);
return -1;
}
/* Set the Mode of addressing to 64 bit if we can */
if ((adapter->flag & BOARD_64BIT) && (sizeof(dma_addr_t) == 8)) {
- pci_set_dma_mask(pdev, 0xffffffffffffffffULL);
+ pci_set_dma_mask(pdev, DMA_64BIT_MASK);
adapter->has_64bit_addr = 1;
} else {
- pci_set_dma_mask(pdev, 0xffffffff);
+ pci_set_dma_mask(pdev, DMA_32BIT_MASK);
adapter->has_64bit_addr = 0;
}
#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/ctype.h>
+#include <linux/dma-mapping.h>
#include <asm/dma.h>
#include <asm/system.h>
/*
* setup DMA
*/
- if (pci_set_dma_mask(PCIDEV, 0xffffffffUL) != 0) {
+ if (pci_set_dma_mask(PCIDEV, DMA_32BIT_MASK) != 0) {
nsp32_msg (KERN_ERR, "failed to set PCI DMA mask");
goto scsi_unregister;
}
#include <linux/blkdev.h>
#include <linux/moduleparam.h>
#include <linux/delay.h>
+#include <linux/jiffies.h>
#include <asm/uaccess.h>
#include <asm/dma.h>
#include <asm/system.h>
) && result >= 0)
{
#if DEBUG
- if (debugging || jiffies - startwait >= 2*HZ/OSST_POLL_PER_SEC)
+ if (debugging || time_after_eq(jiffies, startwait + 2*HZ/OSST_POLL_PER_SEC))
printk (OSST_DEB_MSG
"%s:D: Succ wait f fr %i (>%i): %i-%i %i (%i): %3li.%li s\n",
name, curr, curr+minlast, STp->first_frame_position,
return 0;
}
#if DEBUG
- if (jiffies - startwait >= 2*HZ/OSST_POLL_PER_SEC && notyetprinted)
+ if (time_after_eq(jiffies, startwait + 2*HZ/OSST_POLL_PER_SEC) && notyetprinted)
{
printk (OSST_DEB_MSG "%s:D: Wait for frame %i (>%i): %i-%i %i (%i)\n",
name, curr, curr+minlast, STp->first_frame_position,
#include <linux/parport.h>
#include <linux/workqueue.h>
#include <linux/delay.h>
+#include <linux/jiffies.h>
#include <asm/io.h>
#include <scsi/scsi.h>
retv--;
if (retv) {
- if ((jiffies - dev->jstart) > (1 * HZ)) {
+ if (time_after(jiffies, dev->jstart + (1 * HZ))) {
printk
("ppa: Parallel port cable is unplugged!!\n");
ppa_fail(dev, DID_BUS_BUSY);
#include <linux/pci_ids.h>
#include <linux/interrupt.h>
#include <linux/init.h>
+#include <linux/dma-mapping.h>
#include <asm/io.h>
#include <asm/irq.h>
#ifdef QLA_64BIT_PTR
if (pci_set_dma_mask(ha->pdev, (dma_addr_t) ~ 0ULL)) {
- if (pci_set_dma_mask(ha->pdev, 0xffffffff)) {
+ if (pci_set_dma_mask(ha->pdev, DMA_32BIT_MASK)) {
printk(KERN_WARNING "scsi(%li): Unable to set a "
"suitable DMA mask - aborting\n", ha->host_no);
error = -ENODEV;
dprintk(2, "scsi(%li): 64 Bit PCI Addressing Enabled\n",
ha->host_no);
#else
- if (pci_set_dma_mask(ha->pdev, 0xffffffff)) {
+ if (pci_set_dma_mask(ha->pdev, DMA_32BIT_MASK)) {
printk(KERN_WARNING "scsi(%li): Unable to set a "
"suitable DMA mask - aborting\n", ha->host_no);
error = -ENODEV;
#include <linux/unistd.h>
#include <linux/spinlock.h>
#include <linux/interrupt.h>
+#include <linux/dma-mapping.h>
+#include <linux/jiffies.h>
#include <asm/io.h>
#include <asm/irq.h>
#include "scsi.h"
continue;
/* Try to configure DMA attributes. */
- if (pci_set_dma_mask(pdev, 0xffffffffffffffffULL) &&
- pci_set_dma_mask(pdev, 0xffffffffULL))
+ if (pci_set_dma_mask(pdev, DMA_64BIT_MASK) &&
+ pci_set_dma_mask(pdev, DMA_32BIT_MASK))
continue;
host = scsi_register(tmpt, sizeof(struct isp2x00_hostdata));
cmd->control_flags = cpu_to_le16(CFLAG_READ);
if (Cmnd->device->tagged_supported) {
- if ((jiffies - hostdata->tag_ages[Cmnd->device->id]) > (2 * ISP_TIMEOUT)) {
+ if (time_after(jiffies, hostdata->tag_ages[Cmnd->device->id] + (2 * ISP_TIMEOUT))) {
cmd->control_flags |= cpu_to_le16(CFLAG_ORDERED_TAG);
hostdata->tag_ages[Cmnd->device->id] = jiffies;
} else
#include <linux/spinlock.h>
#include <linux/interrupt.h>
#include <linux/module.h>
+#include <linux/jiffies.h>
#include <asm/byteorder.h>
if (Cmnd->device->tagged_supported) {
if (qpti->cmd_count[Cmnd->device->id] == 0)
qpti->tag_ages[Cmnd->device->id] = jiffies;
- if ((jiffies - qpti->tag_ages[Cmnd->device->id]) > (5*HZ)) {
+ if (time_after(jiffies, qpti->tag_ages[Cmnd->device->id] + (5*HZ))) {
cmd->control_flags = CFLAG_ORDERED_TAG;
qpti->tag_ages[Cmnd->device->id] = jiffies;
} else
/*
* Clear the FIFO buffers and disable them.
- * (they will be reeanbled in set_termios())
+ * (they will be reenabled in set_termios())
*/
serial8250_clear_fifos(up);
#elif defined(CONFIG_SOC_AU1100)
PORT(UART0_ADDR, AU1100_UART0_INT),
PORT(UART1_ADDR, AU1100_UART1_INT),
- PORT(UART2_ADDR, AU1100_UART2_INT),
+ /* The internal UART2 does not exist on the AU1100 processor. */
PORT(UART3_ADDR, AU1100_UART3_INT),
#elif defined(CONFIG_SOC_AU1550)
PORT(UART0_ADDR, AU1550_UART0_INT),
depends on SERIAL_SH_SCI=y
select SERIAL_CORE_CONSOLE
-config SERIAL_AU1X00
- bool "Enable Au1x00 UART Support"
- depends on MIPS && SOC_AU1X00
- select SERIAL_CORE
- help
- If you have an Alchemy AU1X00 processor (MIPS based) and you want
- to use serial ports, say Y. Otherwise, say N.
-
-config SERIAL_AU1X00_CONSOLE
- bool "Enable Au1x00 serial console"
- depends on SERIAL_AU1X00
- select SERIAL_CORE_CONSOLE
- help
- If you have an Alchemy AU1X00 processor (MIPS based) and you want
- to use a console on a serial port, say Y. Otherwise, say N.
-
config SERIAL_CORE
tristate
obj-$(CONFIG_V850E_UART) += v850e_uart.o
obj-$(CONFIG_SERIAL_PMACZILOG) += pmac_zilog.o
obj-$(CONFIG_SERIAL_LH7A40X) += serial_lh7a40x.o
-obj-$(CONFIG_SERIAL_AU1X00) += au1x00_uart.o
obj-$(CONFIG_SERIAL_DZ) += dz.o
obj-$(CONFIG_SERIAL_SH_SCI) += sh-sci.o
obj-$(CONFIG_SERIAL_SGI_L1_CONSOLE) += sn_console.o
#include <linux/amba/serial.h>
#include <asm/io.h>
-#include <asm/irq.h>
-#include <asm/hardware.h>
#define UART_NR 2
#define UART_RX_DATA(s) (((s) & UART01x_FR_RXFE) == 0)
#define UART_TX_READY(s) (((s) & UART01x_FR_TXFF) == 0)
-#define UART_DUMMY_RSR_RX /*256*/0
+#define UART_DUMMY_RSR_RX 256
#define UART_PORT_SIZE 64
/*
- * On the Integrator platform, the port RTS and DTR are provided by
- * bits in the following SC_CTRLS register bits:
- * RTS DTR
- * UART0 7 6
- * UART1 5 4
- */
-#define SC_CTRLC (IO_ADDRESS(INTEGRATOR_SC_BASE) + INTEGRATOR_SC_CTRLC_OFFSET)
-#define SC_CTRLS (IO_ADDRESS(INTEGRATOR_SC_BASE) + INTEGRATOR_SC_CTRLS_OFFSET)
-
-/*
* We wrap our port structure around the generic uart_port.
*/
struct uart_amba_port {
struct uart_port port;
- unsigned int dtr_mask;
- unsigned int rts_mask;
+ struct amba_device *dev;
+ struct amba_pl010_data *data;
unsigned int old_status;
};
static void pl010_set_mctrl(struct uart_port *port, unsigned int mctrl)
{
struct uart_amba_port *uap = (struct uart_amba_port *)port;
- unsigned int ctrls = 0, ctrlc = 0;
-
- if (mctrl & TIOCM_RTS)
- ctrlc |= uap->rts_mask;
- else
- ctrls |= uap->rts_mask;
- if (mctrl & TIOCM_DTR)
- ctrlc |= uap->dtr_mask;
- else
- ctrls |= uap->dtr_mask;
-
- __raw_writel(ctrls, SC_CTRLS);
- __raw_writel(ctrlc, SC_CTRLC);
+ if (uap->data)
+ uap->data->set_mctrl(uap->dev, uap->port.membase, mctrl);
}
static void pl010_break_ctl(struct uart_port *port, int break_state)
.verify_port = pl010_verify_port,
};
-static struct uart_amba_port amba_ports[UART_NR] = {
- {
- .port = {
- .membase = (void *)IO_ADDRESS(INTEGRATOR_UART0_BASE),
- .mapbase = INTEGRATOR_UART0_BASE,
- .iotype = UPIO_MEM,
- .irq = IRQ_UARTINT0,
- .uartclk = 14745600,
- .fifosize = 16,
- .ops = &amba_pl010_pops,
- .flags = UPF_BOOT_AUTOCONF,
- .line = 0,
- },
- .dtr_mask = 1 << 5,
- .rts_mask = 1 << 4,
- },
- {
- .port = {
- .membase = (void *)IO_ADDRESS(INTEGRATOR_UART1_BASE),
- .mapbase = INTEGRATOR_UART1_BASE,
- .iotype = UPIO_MEM,
- .irq = IRQ_UARTINT1,
- .uartclk = 14745600,
- .fifosize = 16,
- .ops = &amba_pl010_pops,
- .flags = UPF_BOOT_AUTOCONF,
- .line = 1,
- },
- .dtr_mask = 1 << 7,
- .rts_mask = 1 << 6,
- }
-};
+static struct uart_amba_port *amba_ports[UART_NR];
#ifdef CONFIG_SERIAL_AMBA_PL010_CONSOLE
static void
pl010_console_write(struct console *co, const char *s, unsigned int count)
{
- struct uart_port *port = &amba_ports[co->index].port;
+ struct uart_port *port = &amba_ports[co->index]->port;
unsigned int status, old_cr;
/*
*/
if (co->index >= UART_NR)
co->index = 0;
- port = &amba_ports[co->index].port;
+ port = &amba_ports[co->index]->port;
if (options)
uart_parse_options(options, &baud, &parity, &bits, &flow);
.data = &amba_reg,
};
-static int __init amba_console_init(void)
-{
- /*
- * All port initializations are done statically
- */
- register_console(&amba_console);
- return 0;
-}
-console_initcall(amba_console_init);
-
-static int __init amba_late_console_init(void)
-{
- if (!(amba_console.flags & CON_ENABLED))
- register_console(&amba_console);
- return 0;
-}
-late_initcall(amba_late_console_init);
-
#define AMBA_CONSOLE &amba_console
#else
#define AMBA_CONSOLE NULL
static int pl010_probe(struct amba_device *dev, void *id)
{
- int i;
+ struct uart_amba_port *port;
+ void __iomem *base;
+ int i, ret;
- for (i = 0; i < UART_NR; i++) {
- if (amba_ports[i].port.mapbase != dev->res.start)
- continue;
+ for (i = 0; i < ARRAY_SIZE(amba_ports); i++)
+ if (amba_ports[i] == NULL)
+ break;
- amba_ports[i].port.dev = &dev->dev;
- uart_add_one_port(&amba_reg, &amba_ports[i].port);
- amba_set_drvdata(dev, &amba_ports[i]);
- break;
+ if (i == ARRAY_SIZE(amba_ports)) {
+ ret = -EBUSY;
+ goto out;
}
- return 0;
+ port = kzalloc(sizeof(struct uart_amba_port), GFP_KERNEL);
+ if (!port) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ base = ioremap(dev->res.start, PAGE_SIZE);
+ if (!base) {
+ ret = -ENOMEM;
+ goto free;
+ }
+
+ port->port.dev = &dev->dev;
+ port->port.mapbase = dev->res.start;
+ port->port.membase = base;
+ port->port.iotype = UPIO_MEM;
+ port->port.irq = dev->irq[0];
+ port->port.uartclk = 14745600;
+ port->port.fifosize = 16;
+ port->port.ops = &amba_pl010_pops;
+ port->port.flags = UPF_BOOT_AUTOCONF;
+ port->port.line = i;
+ port->dev = dev;
+ port->data = dev->dev.platform_data;
+
+ amba_ports[i] = port;
+
+ amba_set_drvdata(dev, port);
+ ret = uart_add_one_port(&amba_reg, &port->port);
+ if (ret) {
+ amba_set_drvdata(dev, NULL);
+ amba_ports[i] = NULL;
+ iounmap(base);
+ free:
+ kfree(port);
+ }
+
+ out:
+ return ret;
}
static int pl010_remove(struct amba_device *dev)
{
- struct uart_amba_port *uap = amba_get_drvdata(dev);
-
- if (uap)
- uart_remove_one_port(&amba_reg, &uap->port);
+ struct uart_amba_port *port = amba_get_drvdata(dev);
+ int i;
amba_set_drvdata(dev, NULL);
+ uart_remove_one_port(&amba_reg, &port->port);
+
+ for (i = 0; i < ARRAY_SIZE(amba_ports); i++)
+ if (amba_ports[i] == port)
+ amba_ports[i] = NULL;
+
+ iounmap(port->port.membase);
+ kfree(port);
+
return 0;
}
+++ /dev/null
-/*
- * Driver for 8250/16550-type serial ports
- *
- * Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o.
- *
- * Copyright (C) 2001 Russell King.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * A note about mapbase / membase
- *
- * mapbase is the physical address of the IO port. Currently, we don't
- * support this very well, and it may well be dropped from this driver
- * in future. As such, mapbase should be NULL.
- *
- * membase is an 'ioremapped' cookie. This is compatible with the old
- * serial.c driver, and is currently the preferred form.
- */
-#include <linux/config.h>
-#include <linux/module.h>
-#include <linux/tty.h>
-#include <linux/ioport.h>
-#include <linux/init.h>
-#include <linux/console.h>
-#include <linux/sysrq.h>
-#include <linux/serial.h>
-#include <linux/serialP.h>
-#include <linux/delay.h>
-
-#include <asm/serial.h>
-#include <asm/io.h>
-#include <asm/irq.h>
-#include <asm/mach-au1x00/au1000.h>
-
-#if defined(CONFIG_SERIAL_AU1X00_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
-#define SUPPORT_SYSRQ
-#endif
-
-#include <linux/serial_core.h>
-#include "8250.h"
-
-/*
- * Debugging.
- */
-#if 0
-#define DEBUG_AUTOCONF(fmt...) printk(fmt)
-#else
-#define DEBUG_AUTOCONF(fmt...) do { } while (0)
-#endif
-
-#if 0
-#define DEBUG_INTR(fmt...) printk(fmt)
-#else
-#define DEBUG_INTR(fmt...) do { } while (0)
-#endif
-
-#define PASS_LIMIT 256
-
-/*
- * We default to IRQ0 for the "no irq" hack. Some
- * machine types want others as well - they're free
- * to redefine this in their header file.
- */
-#define is_real_interrupt(irq) ((irq) != 0)
-
-static struct old_serial_port old_serial_port[] = {
- { .baud_base = 0,
- .iomem_base = (u8 *)UART0_ADDR,
- .irq = AU1000_UART0_INT,
- .flags = STD_COM_FLAGS,
- .iomem_reg_shift = 2,
- }, {
- .baud_base = 0,
- .iomem_base = (u8 *)UART1_ADDR,
- .irq = AU1000_UART1_INT,
- .flags = STD_COM_FLAGS,
- .iomem_reg_shift = 2
- }, {
- .baud_base = 0,
- .iomem_base = (u8 *)UART2_ADDR,
- .irq = AU1000_UART2_INT,
- .flags = STD_COM_FLAGS,
- .iomem_reg_shift = 2
- }, {
- .baud_base = 0,
- .iomem_base = (u8 *)UART3_ADDR,
- .irq = AU1000_UART3_INT,
- .flags = STD_COM_FLAGS,
- .iomem_reg_shift = 2
- }
-};
-
-#define UART_NR ARRAY_SIZE(old_serial_port)
-
-struct uart_8250_port {
- struct uart_port port;
- struct timer_list timer; /* "no irq" timer */
- struct list_head list; /* ports on this IRQ */
- unsigned short rev;
- unsigned char acr;
- unsigned char ier;
- unsigned char lcr;
- unsigned char mcr_mask; /* mask of user bits */
- unsigned char mcr_force; /* mask of forced bits */
- unsigned char lsr_break_flag;
-
- /*
- * We provide a per-port pm hook.
- */
- void (*pm)(struct uart_port *port,
- unsigned int state, unsigned int old);
-};
-
-struct irq_info {
- spinlock_t lock;
- struct list_head *head;
-};
-
-static struct irq_info irq_lists[NR_IRQS];
-
-/*
- * Here we define the default xmit fifo size used for each type of UART.
- */
-static const struct serial_uart_config uart_config[PORT_MAX_8250+1] = {
- { "unknown", 1, 0 },
- { "8250", 1, 0 },
- { "16450", 1, 0 },
- { "16550", 1, 0 },
- /* PORT_16550A */
- { "AU1X00_UART",16, UART_CLEAR_FIFO | UART_USE_FIFO },
-};
-
-static unsigned int serial_in(struct uart_8250_port *up, int offset)
-{
- return au_readl((unsigned long)up->port.membase + offset);
-}
-
-static void serial_out(struct uart_8250_port *up, int offset, int value)
-{
- au_writel(value, (unsigned long)up->port.membase + offset);
-}
-
-#define serial_inp(up, offset) serial_in(up, offset)
-#define serial_outp(up, offset, value) serial_out(up, offset, value)
-
-/*
- * This routine is called by rs_init() to initialize a specific serial
- * port. It determines what type of UART chip this serial port is
- * using: 8250, 16450, 16550, 16550A. The important question is
- * whether or not this UART is a 16550A or not, since this will
- * determine whether or not we can use its FIFO features or not.
- */
-static void autoconfig(struct uart_8250_port *up, unsigned int probeflags)
-{
- unsigned char save_lcr, save_mcr;
- unsigned long flags;
-
- if (!up->port.iobase && !up->port.mapbase && !up->port.membase)
- return;
-
- DEBUG_AUTOCONF("ttyS%d: autoconf (0x%04x, 0x%08lx): ",
- up->port.line, up->port.iobase, up->port.membase);
-
- /*
- * We really do need global IRQs disabled here - we're going to
- * be frobbing the chips IRQ enable register to see if it exists.
- */
- spin_lock_irqsave(&up->port.lock, flags);
-// save_flags(flags); cli();
-
- save_mcr = serial_in(up, UART_MCR);
- save_lcr = serial_in(up, UART_LCR);
-
- up->port.type = PORT_16550A;
- serial_outp(up, UART_LCR, save_lcr);
-
- up->port.fifosize = uart_config[up->port.type].dfl_xmit_fifo_size;
-
- if (up->port.type == PORT_UNKNOWN)
- goto out;
-
- /*
- * Reset the UART.
- */
- serial_outp(up, UART_MCR, save_mcr);
- serial_outp(up, UART_FCR, (UART_FCR_ENABLE_FIFO |
- UART_FCR_CLEAR_RCVR |
- UART_FCR_CLEAR_XMIT));
- serial_outp(up, UART_FCR, 0);
- (void)serial_in(up, UART_RX);
- serial_outp(up, UART_IER, 0);
-
- out:
- spin_unlock_irqrestore(&up->port.lock, flags);
-// restore_flags(flags);
- DEBUG_AUTOCONF("type=%s\n", uart_config[up->port.type].name);
-}
-
-static void serial8250_stop_tx(struct uart_port *port)
-{
- struct uart_8250_port *up = (struct uart_8250_port *)port;
-
- if (up->ier & UART_IER_THRI) {
- up->ier &= ~UART_IER_THRI;
- serial_out(up, UART_IER, up->ier);
- }
-}
-
-static void serial8250_start_tx(struct uart_port *port)
-{
- struct uart_8250_port *up = (struct uart_8250_port *)port;
-
- if (!(up->ier & UART_IER_THRI)) {
- up->ier |= UART_IER_THRI;
- serial_out(up, UART_IER, up->ier);
- }
-}
-
-static void serial8250_stop_rx(struct uart_port *port)
-{
- struct uart_8250_port *up = (struct uart_8250_port *)port;
-
- up->ier &= ~UART_IER_RLSI;
- up->port.read_status_mask &= ~UART_LSR_DR;
- serial_out(up, UART_IER, up->ier);
-}
-
-static void serial8250_enable_ms(struct uart_port *port)
-{
- struct uart_8250_port *up = (struct uart_8250_port *)port;
-
- up->ier |= UART_IER_MSI;
- serial_out(up, UART_IER, up->ier);
-}
-
-static void
-receive_chars(struct uart_8250_port *up, int *status, struct pt_regs *regs)
-{
- struct tty_struct *tty = up->port.info->tty;
- unsigned char ch, flag;
- int max_count = 256;
-
- do {
- ch = serial_inp(up, UART_RX);
- flag = TTY_NORMAL;
- up->port.icount.rx++;
-
- if (unlikely(*status & (UART_LSR_BI | UART_LSR_PE |
- UART_LSR_FE | UART_LSR_OE))) {
- /*
- * For statistics only
- */
- if (*status & UART_LSR_BI) {
- *status &= ~(UART_LSR_FE | UART_LSR_PE);
- up->port.icount.brk++;
- /*
- * We do the SysRQ and SAK checking
- * here because otherwise the break
- * may get masked by ignore_status_mask
- * or read_status_mask.
- */
- if (uart_handle_break(&up->port))
- goto ignore_char;
- } else if (*status & UART_LSR_PE)
- up->port.icount.parity++;
- else if (*status & UART_LSR_FE)
- up->port.icount.frame++;
- if (*status & UART_LSR_OE)
- up->port.icount.overrun++;
-
- /*
- * Mask off conditions which should be ingored.
- */
- *status &= up->port.read_status_mask;
-
-#ifdef CONFIG_SERIAL_AU1X00_CONSOLE
- if (up->port.line == up->port.cons->index) {
- /* Recover the break flag from console xmit */
- *status |= up->lsr_break_flag;
- up->lsr_break_flag = 0;
- }
-#endif
- if (*status & UART_LSR_BI) {
- DEBUG_INTR("handling break....");
- flag = TTY_BREAK;
- } else if (*status & UART_LSR_PE)
- flag = TTY_PARITY;
- else if (*status & UART_LSR_FE)
- flag = TTY_FRAME;
- }
- if (uart_handle_sysrq_char(&up->port, ch, regs))
- goto ignore_char;
- if ((*status & up->port.ignore_status_mask) == 0)
- tty_insert_flip_char(tty, ch, flag);
- if (*status & UART_LSR_OE)
- /*
- * Overrun is special, since it's reported
- * immediately, and doesn't affect the current
- * character.
- */
- tty_insert_flip_char(tty, 0, TTY_OVERRUN);
- }
- ignore_char:
- *status = serial_inp(up, UART_LSR);
- } while ((*status & UART_LSR_DR) && (max_count-- > 0));
- spin_unlock(&up->port.lock);
- tty_flip_buffer_push(tty);
- spin_lock(&up->port.lock);
-}
-
-static void transmit_chars(struct uart_8250_port *up)
-{
- struct circ_buf *xmit = &up->port.info->xmit;
- int count;
-
- if (up->port.x_char) {
- serial_outp(up, UART_TX, up->port.x_char);
- up->port.icount.tx++;
- up->port.x_char = 0;
- return;
- }
- if (uart_circ_empty(xmit) || uart_tx_stopped(&up->port)) {
- serial8250_stop_tx(&up->port);
- return;
- }
-
- count = up->port.fifosize;
- do {
- serial_out(up, UART_TX, xmit->buf[xmit->tail]);
- xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
- up->port.icount.tx++;
- if (uart_circ_empty(xmit))
- break;
- } while (--count > 0);
-
- if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
- uart_write_wakeup(&up->port);
-
- DEBUG_INTR("THRE...");
-
- if (uart_circ_empty(xmit))
- serial8250_stop_tx(&up->port);
-}
-
-static void check_modem_status(struct uart_8250_port *up)
-{
- int status;
-
- status = serial_in(up, UART_MSR);
-
- if ((status & UART_MSR_ANY_DELTA) == 0)
- return;
-
- if (status & UART_MSR_TERI)
- up->port.icount.rng++;
- if (status & UART_MSR_DDSR)
- up->port.icount.dsr++;
- if (status & UART_MSR_DDCD)
- uart_handle_dcd_change(&up->port, status & UART_MSR_DCD);
- if (status & UART_MSR_DCTS)
- uart_handle_cts_change(&up->port, status & UART_MSR_CTS);
-
- wake_up_interruptible(&up->port.info->delta_msr_wait);
-}
-
-/*
- * This handles the interrupt from one port.
- */
-static inline void
-serial8250_handle_port(struct uart_8250_port *up, struct pt_regs *regs)
-{
- unsigned int status = serial_inp(up, UART_LSR);
-
- DEBUG_INTR("status = %x...", status);
-
- if (status & UART_LSR_DR)
- receive_chars(up, &status, regs);
- check_modem_status(up);
- if (status & UART_LSR_THRE)
- transmit_chars(up);
-}
-
-/*
- * This is the serial driver's interrupt routine.
- *
- * Arjan thinks the old way was overly complex, so it got simplified.
- * Alan disagrees, saying that need the complexity to handle the weird
- * nature of ISA shared interrupts. (This is a special exception.)
- *
- * In order to handle ISA shared interrupts properly, we need to check
- * that all ports have been serviced, and therefore the ISA interrupt
- * line has been de-asserted.
- *
- * This means we need to loop through all ports. checking that they
- * don't have an interrupt pending.
- */
-static irqreturn_t serial8250_interrupt(int irq, void *dev_id, struct pt_regs *regs)
-{
- struct irq_info *i = dev_id;
- struct list_head *l, *end = NULL;
- int pass_counter = 0;
-
- DEBUG_INTR("serial8250_interrupt(%d)...", irq);
-
- spin_lock(&i->lock);
-
- l = i->head;
- do {
- struct uart_8250_port *up;
- unsigned int iir;
-
- up = list_entry(l, struct uart_8250_port, list);
-
- iir = serial_in(up, UART_IIR);
- if (!(iir & UART_IIR_NO_INT)) {
- spin_lock(&up->port.lock);
- serial8250_handle_port(up, regs);
- spin_unlock(&up->port.lock);
-
- end = NULL;
- } else if (end == NULL)
- end = l;
-
- l = l->next;
-
- if (l == i->head && pass_counter++ > PASS_LIMIT) {
- /* If we hit this, we're dead. */
- printk(KERN_ERR "serial8250: too much work for "
- "irq%d\n", irq);
- break;
- }
- } while (l != end);
-
- spin_unlock(&i->lock);
-
- DEBUG_INTR("end.\n");
- /* FIXME! Was it really ours? */
- return IRQ_HANDLED;
-}
-
-/*
- * To support ISA shared interrupts, we need to have one interrupt
- * handler that ensures that the IRQ line has been deasserted
- * before returning. Failing to do this will result in the IRQ
- * line being stuck active, and, since ISA irqs are edge triggered,
- * no more IRQs will be seen.
- */
-static void serial_do_unlink(struct irq_info *i, struct uart_8250_port *up)
-{
- spin_lock_irq(&i->lock);
-
- if (!list_empty(i->head)) {
- if (i->head == &up->list)
- i->head = i->head->next;
- list_del(&up->list);
- } else {
- BUG_ON(i->head != &up->list);
- i->head = NULL;
- }
-
- spin_unlock_irq(&i->lock);
-}
-
-static int serial_link_irq_chain(struct uart_8250_port *up)
-{
- struct irq_info *i = irq_lists + up->port.irq;
- int ret, irq_flags = up->port.flags & UPF_SHARE_IRQ ? SA_SHIRQ : 0;
-
- spin_lock_irq(&i->lock);
-
- if (i->head) {
- list_add(&up->list, i->head);
- spin_unlock_irq(&i->lock);
-
- ret = 0;
- } else {
- INIT_LIST_HEAD(&up->list);
- i->head = &up->list;
- spin_unlock_irq(&i->lock);
-
- ret = request_irq(up->port.irq, serial8250_interrupt,
- irq_flags, "serial", i);
- if (ret < 0)
- serial_do_unlink(i, up);
- }
-
- return ret;
-}
-
-static void serial_unlink_irq_chain(struct uart_8250_port *up)
-{
- struct irq_info *i = irq_lists + up->port.irq;
-
- BUG_ON(i->head == NULL);
-
- if (list_empty(i->head))
- free_irq(up->port.irq, i);
-
- serial_do_unlink(i, up);
-}
-
-/*
- * This function is used to handle ports that do not have an
- * interrupt. This doesn't work very well for 16450's, but gives
- * barely passable results for a 16550A. (Although at the expense
- * of much CPU overhead).
- */
-static void serial8250_timeout(unsigned long data)
-{
- struct uart_8250_port *up = (struct uart_8250_port *)data;
- unsigned int timeout;
- unsigned int iir;
-
- iir = serial_in(up, UART_IIR);
- if (!(iir & UART_IIR_NO_INT)) {
- spin_lock(&up->port.lock);
- serial8250_handle_port(up, NULL);
- spin_unlock(&up->port.lock);
- }
-
- timeout = up->port.timeout;
- timeout = timeout > 6 ? (timeout / 2 - 2) : 1;
- mod_timer(&up->timer, jiffies + timeout);
-}
-
-static unsigned int serial8250_tx_empty(struct uart_port *port)
-{
- struct uart_8250_port *up = (struct uart_8250_port *)port;
- unsigned long flags;
- unsigned int ret;
-
- spin_lock_irqsave(&up->port.lock, flags);
- ret = serial_in(up, UART_LSR) & UART_LSR_TEMT ? TIOCSER_TEMT : 0;
- spin_unlock_irqrestore(&up->port.lock, flags);
-
- return ret;
-}
-
-static unsigned int serial8250_get_mctrl(struct uart_port *port)
-{
- struct uart_8250_port *up = (struct uart_8250_port *)port;
- unsigned char status;
- unsigned int ret;
-
- status = serial_in(up, UART_MSR);
-
- ret = 0;
- if (status & UART_MSR_DCD)
- ret |= TIOCM_CAR;
- if (status & UART_MSR_RI)
- ret |= TIOCM_RNG;
- if (status & UART_MSR_DSR)
- ret |= TIOCM_DSR;
- if (status & UART_MSR_CTS)
- ret |= TIOCM_CTS;
- return ret;
-}
-
-static void serial8250_set_mctrl(struct uart_port *port, unsigned int mctrl)
-{
- struct uart_8250_port *up = (struct uart_8250_port *)port;
- unsigned char mcr = 0;
-
- if (mctrl & TIOCM_RTS)
- mcr |= UART_MCR_RTS;
- if (mctrl & TIOCM_DTR)
- mcr |= UART_MCR_DTR;
- if (mctrl & TIOCM_OUT1)
- mcr |= UART_MCR_OUT1;
- if (mctrl & TIOCM_OUT2)
- mcr |= UART_MCR_OUT2;
- if (mctrl & TIOCM_LOOP)
- mcr |= UART_MCR_LOOP;
-
- mcr = (mcr & up->mcr_mask) | up->mcr_force;
-
- serial_out(up, UART_MCR, mcr);
-}
-
-static void serial8250_break_ctl(struct uart_port *port, int break_state)
-{
- struct uart_8250_port *up = (struct uart_8250_port *)port;
- unsigned long flags;
-
- spin_lock_irqsave(&up->port.lock, flags);
- if (break_state == -1)
- up->lcr |= UART_LCR_SBC;
- else
- up->lcr &= ~UART_LCR_SBC;
- serial_out(up, UART_LCR, up->lcr);
- spin_unlock_irqrestore(&up->port.lock, flags);
-}
-
-static int serial8250_startup(struct uart_port *port)
-{
- struct uart_8250_port *up = (struct uart_8250_port *)port;
- unsigned long flags;
- int retval;
-
- /*
- * Clear the FIFO buffers and disable them.
- * (they will be reeanbled in set_termios())
- */
- if (uart_config[up->port.type].flags & UART_CLEAR_FIFO) {
- serial_outp(up, UART_FCR, UART_FCR_ENABLE_FIFO);
- serial_outp(up, UART_FCR, UART_FCR_ENABLE_FIFO |
- UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT);
- serial_outp(up, UART_FCR, 0);
- }
-
- /*
- * Clear the interrupt registers.
- */
- (void) serial_inp(up, UART_LSR);
- (void) serial_inp(up, UART_RX);
- (void) serial_inp(up, UART_IIR);
- (void) serial_inp(up, UART_MSR);
-
- /*
- * At this point, there's no way the LSR could still be 0xff;
- * if it is, then bail out, because there's likely no UART
- * here.
- */
- if (!(up->port.flags & UPF_BUGGY_UART) &&
- (serial_inp(up, UART_LSR) == 0xff)) {
- printk("ttyS%d: LSR safety check engaged!\n", up->port.line);
- return -ENODEV;
- }
-
- retval = serial_link_irq_chain(up);
- if (retval)
- return retval;
-
- /*
- * Now, initialize the UART
- */
- serial_outp(up, UART_LCR, UART_LCR_WLEN8);
-
- spin_lock_irqsave(&up->port.lock, flags);
- if (up->port.flags & UPF_FOURPORT) {
- if (!is_real_interrupt(up->port.irq))
- up->port.mctrl |= TIOCM_OUT1;
- } else
- /*
- * Most PC uarts need OUT2 raised to enable interrupts.
- */
- if (is_real_interrupt(up->port.irq))
- up->port.mctrl |= TIOCM_OUT2;
-
- serial8250_set_mctrl(&up->port, up->port.mctrl);
- spin_unlock_irqrestore(&up->port.lock, flags);
-
- /*
- * Finally, enable interrupts. Note: Modem status interrupts
- * are set via set_termios(), which will be occurring imminently
- * anyway, so we don't enable them here.
- */
- up->ier = UART_IER_RLSI | UART_IER_RDI;
- serial_outp(up, UART_IER, up->ier);
-
- if (up->port.flags & UPF_FOURPORT) {
- unsigned int icp;
- /*
- * Enable interrupts on the AST Fourport board
- */
- icp = (up->port.iobase & 0xfe0) | 0x01f;
- outb_p(0x80, icp);
- (void) inb_p(icp);
- }
-
- /*
- * And clear the interrupt registers again for luck.
- */
- (void) serial_inp(up, UART_LSR);
- (void) serial_inp(up, UART_RX);
- (void) serial_inp(up, UART_IIR);
- (void) serial_inp(up, UART_MSR);
-
- return 0;
-}
-
-static void serial8250_shutdown(struct uart_port *port)
-{
- struct uart_8250_port *up = (struct uart_8250_port *)port;
- unsigned long flags;
-
- /*
- * Disable interrupts from this port
- */
- up->ier = 0;
- serial_outp(up, UART_IER, 0);
-
- spin_lock_irqsave(&up->port.lock, flags);
- if (up->port.flags & UPF_FOURPORT) {
- /* reset interrupts on the AST Fourport board */
- inb((up->port.iobase & 0xfe0) | 0x1f);
- up->port.mctrl |= TIOCM_OUT1;
- } else
- up->port.mctrl &= ~TIOCM_OUT2;
-
- serial8250_set_mctrl(&up->port, up->port.mctrl);
- spin_unlock_irqrestore(&up->port.lock, flags);
-
- /*
- * Disable break condition and FIFOs
- */
- serial_out(up, UART_LCR, serial_inp(up, UART_LCR) & ~UART_LCR_SBC);
- serial_outp(up, UART_FCR, UART_FCR_ENABLE_FIFO |
- UART_FCR_CLEAR_RCVR |
- UART_FCR_CLEAR_XMIT);
- serial_outp(up, UART_FCR, 0);
-
- /*
- * Read data port to reset things, and then unlink from
- * the IRQ chain.
- */
- (void) serial_in(up, UART_RX);
-
- if (!is_real_interrupt(up->port.irq))
- del_timer_sync(&up->timer);
- else
- serial_unlink_irq_chain(up);
-}
-
-static unsigned int serial8250_get_divisor(struct uart_port *port, unsigned int baud)
-{
- unsigned int quot;
-
- /*
- * Handle magic divisors for baud rates above baud_base on
- * SMSC SuperIO chips.
- */
- if ((port->flags & UPF_MAGIC_MULTIPLIER) &&
- baud == (port->uartclk/4))
- quot = 0x8001;
- else if ((port->flags & UPF_MAGIC_MULTIPLIER) &&
- baud == (port->uartclk/8))
- quot = 0x8002;
- else
- quot = uart_get_divisor(port, baud);
-
- return quot;
-}
-
-static void
-serial8250_set_termios(struct uart_port *port, struct termios *termios,
- struct termios *old)
-{
- struct uart_8250_port *up = (struct uart_8250_port *)port;
- unsigned char cval, fcr = 0;
- unsigned long flags;
- unsigned int baud, quot;
-
- switch (termios->c_cflag & CSIZE) {
- case CS5:
- cval = UART_LCR_WLEN5;
- break;
- case CS6:
- cval = UART_LCR_WLEN6;
- break;
- case CS7:
- cval = UART_LCR_WLEN7;
- break;
- default:
- case CS8:
- cval = UART_LCR_WLEN8;
- break;
- }
-
- if (termios->c_cflag & CSTOPB)
- cval |= UART_LCR_STOP;
- if (termios->c_cflag & PARENB)
- cval |= UART_LCR_PARITY;
- if (!(termios->c_cflag & PARODD))
- cval |= UART_LCR_EPAR;
-#ifdef CMSPAR
- if (termios->c_cflag & CMSPAR)
- cval |= UART_LCR_SPAR;
-#endif
-
- /*
- * Ask the core to calculate the divisor for us.
- */
- baud = uart_get_baud_rate(port, termios, old, 0, port->uartclk/16);
- quot = serial8250_get_divisor(port, baud);
- quot = 0x35; /* FIXME */
-
- /*
- * Work around a bug in the Oxford Semiconductor 952 rev B
- * chip which causes it to seriously miscalculate baud rates
- * when DLL is 0.
- */
- if ((quot & 0xff) == 0 && up->port.type == PORT_16C950 &&
- up->rev == 0x5201)
- quot ++;
-
- if (uart_config[up->port.type].flags & UART_USE_FIFO) {
- if (baud < 2400)
- fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIGGER_1;
- else
- fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIGGER_8;
- }
-
- /*
- * Ok, we're now changing the port state. Do it with
- * interrupts disabled.
- */
- spin_lock_irqsave(&up->port.lock, flags);
-
- /*
- * Update the per-port timeout.
- */
- uart_update_timeout(port, termios->c_cflag, baud);
-
- up->port.read_status_mask = UART_LSR_OE | UART_LSR_THRE | UART_LSR_DR;
- if (termios->c_iflag & INPCK)
- up->port.read_status_mask |= UART_LSR_FE | UART_LSR_PE;
- if (termios->c_iflag & (BRKINT | PARMRK))
- up->port.read_status_mask |= UART_LSR_BI;
-
- /*
- * Characteres to ignore
- */
- up->port.ignore_status_mask = 0;
- if (termios->c_iflag & IGNPAR)
- up->port.ignore_status_mask |= UART_LSR_PE | UART_LSR_FE;
- if (termios->c_iflag & IGNBRK) {
- up->port.ignore_status_mask |= UART_LSR_BI;
- /*
- * If we're ignoring parity and break indicators,
- * ignore overruns too (for real raw support).
- */
- if (termios->c_iflag & IGNPAR)
- up->port.ignore_status_mask |= UART_LSR_OE;
- }
-
- /*
- * ignore all characters if CREAD is not set
- */
- if ((termios->c_cflag & CREAD) == 0)
- up->port.ignore_status_mask |= UART_LSR_DR;
-
- /*
- * CTS flow control flag and modem status interrupts
- */
- up->ier &= ~UART_IER_MSI;
- if (UART_ENABLE_MS(&up->port, termios->c_cflag))
- up->ier |= UART_IER_MSI;
-
- serial_out(up, UART_IER, up->ier);
- serial_outp(up, 0x28, quot & 0xffff);
- up->lcr = cval; /* Save LCR */
- if (up->port.type != PORT_16750) {
- if (fcr & UART_FCR_ENABLE_FIFO) {
- /* emulated UARTs (Lucent Venus 167x) need two steps */
- serial_outp(up, UART_FCR, UART_FCR_ENABLE_FIFO);
- }
- serial_outp(up, UART_FCR, fcr); /* set fcr */
- }
- spin_unlock_irqrestore(&up->port.lock, flags);
-}
-
-static void
-serial8250_pm(struct uart_port *port, unsigned int state,
- unsigned int oldstate)
-{
- struct uart_8250_port *up = (struct uart_8250_port *)port;
- if (state) {
- /* sleep */
- if (up->pm)
- up->pm(port, state, oldstate);
- } else {
- /* wake */
- if (up->pm)
- up->pm(port, state, oldstate);
- }
-}
-
-/*
- * Resource handling. This is complicated by the fact that resources
- * depend on the port type. Maybe we should be claiming the standard
- * 8250 ports, and then trying to get other resources as necessary?
- */
-static int
-serial8250_request_std_resource(struct uart_8250_port *up, struct resource **res)
-{
- unsigned int size = 8 << up->port.regshift;
- int ret = 0;
-
- switch (up->port.iotype) {
- case UPIO_MEM:
- if (up->port.mapbase) {
- *res = request_mem_region(up->port.mapbase, size, "serial");
- if (!*res)
- ret = -EBUSY;
- }
- break;
-
- case UPIO_HUB6:
- case UPIO_PORT:
- *res = request_region(up->port.iobase, size, "serial");
- if (!*res)
- ret = -EBUSY;
- break;
- }
- return ret;
-}
-
-
-static void serial8250_release_port(struct uart_port *port)
-{
- struct uart_8250_port *up = (struct uart_8250_port *)port;
- unsigned long start, offset = 0, size = 0;
-
- size <<= up->port.regshift;
-
- switch (up->port.iotype) {
- case UPIO_MEM:
- if (up->port.mapbase) {
- /*
- * Unmap the area.
- */
- iounmap(up->port.membase);
- up->port.membase = NULL;
-
- start = up->port.mapbase;
-
- if (size)
- release_mem_region(start + offset, size);
- release_mem_region(start, 8 << up->port.regshift);
- }
- break;
-
- case UPIO_HUB6:
- case UPIO_PORT:
- start = up->port.iobase;
-
- if (size)
- release_region(start + offset, size);
- release_region(start + offset, 8 << up->port.regshift);
- break;
-
- default:
- break;
- }
-}
-
-static int serial8250_request_port(struct uart_port *port)
-{
- struct uart_8250_port *up = (struct uart_8250_port *)port;
- struct resource *res = NULL, *res_rsa = NULL;
- int ret = 0;
-
- ret = serial8250_request_std_resource(up, &res);
-
- /*
- * If we have a mapbase, then request that as well.
- */
- if (ret == 0 && up->port.flags & UPF_IOREMAP) {
- int size = res->end - res->start + 1;
-
- up->port.membase = ioremap(up->port.mapbase, size);
- if (!up->port.membase)
- ret = -ENOMEM;
- }
-
- if (ret < 0) {
- if (res_rsa)
- release_resource(res_rsa);
- if (res)
- release_resource(res);
- }
- return ret;
-}
-
-static void serial8250_config_port(struct uart_port *port, int flags)
-{
- struct uart_8250_port *up = (struct uart_8250_port *)port;
- struct resource *res_std = NULL, *res_rsa = NULL;
- int probeflags = PROBE_ANY;
-
- probeflags &= ~PROBE_RSA;
-
- if (flags & UART_CONFIG_TYPE)
- autoconfig(up, probeflags);
-
- /*
- * If the port wasn't an RSA port, release the resource.
- */
- if (up->port.type != PORT_RSA && res_rsa)
- release_resource(res_rsa);
-
- if (up->port.type == PORT_UNKNOWN && res_std)
- release_resource(res_std);
-}
-
-static int
-serial8250_verify_port(struct uart_port *port, struct serial_struct *ser)
-{
- if (ser->irq >= NR_IRQS || ser->irq < 0 ||
- ser->baud_base < 9600 || ser->type < PORT_UNKNOWN ||
- ser->type > PORT_MAX_8250 || ser->type == PORT_CIRRUS ||
- ser->type == PORT_STARTECH)
- return -EINVAL;
- return 0;
-}
-
-static const char *
-serial8250_type(struct uart_port *port)
-{
- int type = port->type;
-
- if (type >= ARRAY_SIZE(uart_config))
- type = 0;
- return uart_config[type].name;
-}
-
-static struct uart_ops serial8250_pops = {
- .tx_empty = serial8250_tx_empty,
- .set_mctrl = serial8250_set_mctrl,
- .get_mctrl = serial8250_get_mctrl,
- .stop_tx = serial8250_stop_tx,
- .start_tx = serial8250_start_tx,
- .stop_rx = serial8250_stop_rx,
- .enable_ms = serial8250_enable_ms,
- .break_ctl = serial8250_break_ctl,
- .startup = serial8250_startup,
- .shutdown = serial8250_shutdown,
- .set_termios = serial8250_set_termios,
- .pm = serial8250_pm,
- .type = serial8250_type,
- .release_port = serial8250_release_port,
- .request_port = serial8250_request_port,
- .config_port = serial8250_config_port,
- .verify_port = serial8250_verify_port,
-};
-
-static struct uart_8250_port serial8250_ports[UART_NR];
-
-static void __init serial8250_isa_init_ports(void)
-{
- struct uart_8250_port *up;
- static int first = 1;
- int i;
-
- if (!first)
- return;
- first = 0;
-
- for (i = 0, up = serial8250_ports; i < ARRAY_SIZE(old_serial_port);
- i++, up++) {
- up->port.iobase = old_serial_port[i].port;
- up->port.irq = old_serial_port[i].irq;
- up->port.uartclk = get_au1x00_uart_baud_base();
- up->port.flags = old_serial_port[i].flags;
- up->port.hub6 = old_serial_port[i].hub6;
- up->port.membase = old_serial_port[i].iomem_base;
- up->port.iotype = old_serial_port[i].io_type;
- up->port.regshift = old_serial_port[i].iomem_reg_shift;
- up->port.ops = &serial8250_pops;
- }
-}
-
-static void __init serial8250_register_ports(struct uart_driver *drv)
-{
- int i;
-
- serial8250_isa_init_ports();
-
- for (i = 0; i < UART_NR; i++) {
- struct uart_8250_port *up = &serial8250_ports[i];
-
- up->port.line = i;
- up->port.ops = &serial8250_pops;
- init_timer(&up->timer);
- up->timer.function = serial8250_timeout;
-
- /*
- * ALPHA_KLUDGE_MCR needs to be killed.
- */
- up->mcr_mask = ~ALPHA_KLUDGE_MCR;
- up->mcr_force = ALPHA_KLUDGE_MCR;
-
- uart_add_one_port(drv, &up->port);
- }
-}
-
-#ifdef CONFIG_SERIAL_AU1X00_CONSOLE
-
-#define BOTH_EMPTY (UART_LSR_TEMT | UART_LSR_THRE)
-
-/*
- * Wait for transmitter & holding register to empty
- */
-static inline void wait_for_xmitr(struct uart_8250_port *up)
-{
- unsigned int status, tmout = 10000;
-
- /* Wait up to 10ms for the character(s) to be sent. */
- do {
- status = serial_in(up, UART_LSR);
-
- if (status & UART_LSR_BI)
- up->lsr_break_flag = UART_LSR_BI;
-
- if (--tmout == 0)
- break;
- udelay(1);
- } while ((status & BOTH_EMPTY) != BOTH_EMPTY);
-
- /* Wait up to 1s for flow control if necessary */
- if (up->port.flags & UPF_CONS_FLOW) {
- tmout = 1000000;
- while (--tmout &&
- ((serial_in(up, UART_MSR) & UART_MSR_CTS) == 0))
- udelay(1);
- }
-}
-
-static void au1x00_console_putchar(struct uart_port *port, int ch)
-{
- struct uart_8250_port *up = (struct uart_8250_port *)port;
-
- wait_for_xmitr(up);
- serial_out(up, UART_TX, ch);
-}
-
-/*
- * Print a string to the serial port trying not to disturb
- * any possible real use of the port...
- *
- * The console_lock must be held when we get here.
- */
-static void
-serial8250_console_write(struct console *co, const char *s, unsigned int count)
-{
- struct uart_8250_port *up = &serial8250_ports[co->index];
- unsigned int ier;
-
- /*
- * First save the UER then disable the interrupts
- */
- ier = serial_in(up, UART_IER);
- serial_out(up, UART_IER, 0);
-
- uart_console_write(&up->port, s, count, au1x00_console_putchar);
-
- /*
- * Finally, wait for transmitter to become empty
- * and restore the IER
- */
- wait_for_xmitr(up);
- serial_out(up, UART_IER, ier);
-}
-
-static int __init serial8250_console_setup(struct console *co, char *options)
-{
- struct uart_port *port;
- int baud = 9600;
- int bits = 8;
- int parity = 'n';
- int flow = 'n';
-
- /*
- * Check whether an invalid uart number has been specified, and
- * if so, search for the first available port that does have
- * console support.
- */
- if (co->index >= UART_NR)
- co->index = 0;
- port = &serial8250_ports[co->index].port;
-
- /*
- * Temporary fix.
- */
- spin_lock_init(&port->lock);
-
- if (options)
- uart_parse_options(options, &baud, &parity, &bits, &flow);
-
- return uart_set_options(port, co, baud, parity, bits, flow);
-}
-
-extern struct uart_driver serial8250_reg;
-static struct console serial8250_console = {
- .name = "ttyS",
- .write = serial8250_console_write,
- .device = uart_console_device,
- .setup = serial8250_console_setup,
- .flags = CON_PRINTBUFFER,
- .index = -1,
- .data = &serial8250_reg,
-};
-
-static int __init serial8250_console_init(void)
-{
- serial8250_isa_init_ports();
- register_console(&serial8250_console);
- return 0;
-}
-console_initcall(serial8250_console_init);
-
-#define SERIAL8250_CONSOLE &serial8250_console
-#else
-#define SERIAL8250_CONSOLE NULL
-#endif
-
-static struct uart_driver serial8250_reg = {
- .owner = THIS_MODULE,
- .driver_name = "serial",
- .devfs_name = "tts/",
- .dev_name = "ttyS",
- .major = TTY_MAJOR,
- .minor = 64,
- .nr = UART_NR,
- .cons = SERIAL8250_CONSOLE,
-};
-
-int __init early_serial_setup(struct uart_port *port)
-{
- serial8250_isa_init_ports();
- serial8250_ports[port->line].port = *port;
- serial8250_ports[port->line].port.ops = &serial8250_pops;
- return 0;
-}
-
-/**
- * serial8250_suspend_port - suspend one serial port
- * @line: serial line number
- * @level: the level of port suspension, as per uart_suspend_port
- *
- * Suspend one serial port.
- */
-void serial8250_suspend_port(int line)
-{
- uart_suspend_port(&serial8250_reg, &serial8250_ports[line].port);
-}
-
-/**
- * serial8250_resume_port - resume one serial port
- * @line: serial line number
- * @level: the level of port resumption, as per uart_resume_port
- *
- * Resume one serial port.
- */
-void serial8250_resume_port(int line)
-{
- uart_resume_port(&serial8250_reg, &serial8250_ports[line].port);
-}
-
-static int __init serial8250_init(void)
-{
- int ret, i;
-
- printk(KERN_INFO "Serial: Au1x00 driver\n");
-
- for (i = 0; i < NR_IRQS; i++)
- spin_lock_init(&irq_lists[i].lock);
-
- ret = uart_register_driver(&serial8250_reg);
- if (ret >= 0)
- serial8250_register_ports(&serial8250_reg);
-
- return ret;
-}
-
-static void __exit serial8250_exit(void)
-{
- int i;
-
- for (i = 0; i < UART_NR; i++)
- uart_remove_one_port(&serial8250_reg, &serial8250_ports[i].port);
-
- uart_unregister_driver(&serial8250_reg);
-}
-
-module_init(serial8250_init);
-module_exit(serial8250_exit);
-
-EXPORT_SYMBOL(serial8250_suspend_port);
-EXPORT_SYMBOL(serial8250_resume_port);
-
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("Au1x00 serial driver\n");
/*
* Clear the FIFO buffers and disable them.
- * (they will be reeanbled in set_termios())
+ * (they will be reenabled in set_termios())
*/
sio_set(up, TXX9_SIFCR,
TXX9_SIFCR_TFRST | TXX9_SIFCR_RFRST | TXX9_SIFCR_FRSTE);
/*
* Clear the FIFO buffers and disable them.
- * (they will be reeanbled in set_termios())
+ * (they will be reenabled in set_termios())
*/
if (uart_config[up->port.type].flags & UART_CLEAR_FIFO) {
serial_outp(up, UART_FCR, UART_FCR_ENABLE_FIFO);
unsigned int minor = iminor(inode);
int err = 0;
struct phone_device *p;
- struct file_operations *old_fops, *new_fops = NULL;
+ const struct file_operations *old_fops, *new_fops = NULL;
if (minor >= PHONE_NUM_DEVICES)
return -ENODEV;
#include "usb.h"
#define MAX_USB_MINORS 256
-static struct file_operations *usb_minors[MAX_USB_MINORS];
+static const struct file_operations *usb_minors[MAX_USB_MINORS];
static DEFINE_SPINLOCK(minor_lock);
static int usb_open(struct inode * inode, struct file * file)
{
int minor = iminor(inode);
- struct file_operations *c;
+ const struct file_operations *c;
int err = -ENODEV;
- struct file_operations *old_fops, *new_fops = NULL;
+ const struct file_operations *old_fops, *new_fops = NULL;
spin_lock (&minor_lock);
c = usb_minors[minor];
#include <linux/mutex.h>
#include "usb.h"
-
-static struct notifier_block *usb_notifier_list;
-static DEFINE_MUTEX(usb_notifier_lock);
-
-static void usb_notifier_chain_register(struct notifier_block **list,
- struct notifier_block *n)
-{
- mutex_lock(&usb_notifier_lock);
- while (*list) {
- if (n->priority > (*list)->priority)
- break;
- list = &((*list)->next);
- }
- n->next = *list;
- *list = n;
- mutex_unlock(&usb_notifier_lock);
-}
-
-static void usb_notifier_chain_unregister(struct notifier_block **nl,
- struct notifier_block *n)
-{
- mutex_lock(&usb_notifier_lock);
- while ((*nl)!=NULL) {
- if ((*nl)==n) {
- *nl = n->next;
- goto exit;
- }
- nl=&((*nl)->next);
- }
-exit:
- mutex_unlock(&usb_notifier_lock);
-}
-
-static int usb_notifier_call_chain(struct notifier_block **n,
- unsigned long val, void *v)
-{
- int ret=NOTIFY_DONE;
- struct notifier_block *nb = *n;
-
- mutex_lock(&usb_notifier_lock);
- while (nb) {
- ret = nb->notifier_call(nb,val,v);
- if (ret&NOTIFY_STOP_MASK) {
- goto exit;
- }
- nb = nb->next;
- }
-exit:
- mutex_unlock(&usb_notifier_lock);
- return ret;
-}
+static BLOCKING_NOTIFIER_HEAD(usb_notifier_list);
/**
* usb_register_notify - register a notifier callback whenever a usb change happens
*/
void usb_register_notify(struct notifier_block *nb)
{
- usb_notifier_chain_register(&usb_notifier_list, nb);
+ blocking_notifier_chain_register(&usb_notifier_list, nb);
}
EXPORT_SYMBOL_GPL(usb_register_notify);
*/
void usb_unregister_notify(struct notifier_block *nb)
{
- usb_notifier_chain_unregister(&usb_notifier_list, nb);
+ blocking_notifier_chain_unregister(&usb_notifier_list, nb);
}
EXPORT_SYMBOL_GPL(usb_unregister_notify);
void usb_notify_add_device(struct usb_device *udev)
{
- usb_notifier_call_chain(&usb_notifier_list, USB_DEVICE_ADD, udev);
+ blocking_notifier_call_chain(&usb_notifier_list, USB_DEVICE_ADD, udev);
}
void usb_notify_remove_device(struct usb_device *udev)
{
- usb_notifier_call_chain(&usb_notifier_list, USB_DEVICE_REMOVE, udev);
+ blocking_notifier_call_chain(&usb_notifier_list,
+ USB_DEVICE_REMOVE, udev);
}
void usb_notify_add_bus(struct usb_bus *ubus)
{
- usb_notifier_call_chain(&usb_notifier_list, USB_BUS_ADD, ubus);
+ blocking_notifier_call_chain(&usb_notifier_list, USB_BUS_ADD, ubus);
}
void usb_notify_remove_bus(struct usb_bus *ubus)
{
- usb_notifier_call_chain(&usb_notifier_list, USB_BUS_REMOVE, ubus);
+ blocking_notifier_call_chain(&usb_notifier_list, USB_BUS_REMOVE, ubus);
}
static struct inode *
gadgetfs_create_file (struct super_block *sb, char const *name,
- void *data, struct file_operations *fops,
+ void *data, const struct file_operations *fops,
struct dentry **dentry_p);
static int activate_ep_files (struct dev_data *dev)
static struct inode *
gadgetfs_make_inode (struct super_block *sb,
- void *data, struct file_operations *fops,
+ void *data, const struct file_operations *fops,
int mode)
{
struct inode *inode = new_inode (sb);
*/
static struct inode *
gadgetfs_create_file (struct super_block *sb, char const *name,
- void *data, struct file_operations *fops,
+ void *data, const struct file_operations *fops,
struct dentry **dentry_p)
{
struct dentry *dentry;
"s3c2410_hub_control(%p,0x%04x,0x%04x,0x%04x,%p,%04x)\n",
hcd, typeReq, wValue, wIndex, buf, wLength);
- /* if we are only an humble host without any special capabilites
+ /* if we are only an humble host without any special capabilities
* process the request straight away and exit */
if (info == NULL) {
* with devices that use it and those that don't.
*/
if ((detail->bDetailData[1] & ~0x02) != 0x01) {
- /* bmDataCapabilites == 0 would be fine too,
+ /* bmDataCapabilities == 0 would be fine too,
* but framing is minidriver-coupled for now.
*/
bad_detail:
depends on FB
default n
+config FB_FIRMWARE_EDID
+ bool "Enable firmware EDID"
+ depends on FB
+ default y
+ ---help---
+ This enables access to the EDID transferred from the firmware.
+ On the i386, this is from the Video BIOS. Enable this if DDC/I2C
+ transfers do not work for your driver and if you are using
+ nvidiafb, i810fb or savagefb.
+
+ In general, choosing Y for this option is safe. If you
+ experience extremely long delays while booting before you get
+ something on your display, try setting this to N. Matrox cards in
+ combination with certain motherboards and monitors are known to
+ suffer from this problem.
+
config FB_MODE_HELPERS
bool "Enable Video Mode Handling Helpers"
depends on FB
bool "Au1100 LCD Driver"
depends on (FB = y) && EXPERIMENTAL && PCI && MIPS && MIPS_PB1100=y
+config FB_AU1200
+ bool "Au1200 LCD Driver"
+ depends on FB && MIPS && SOC_AU1200
+ select FB_CFB_FILLRECT
+ select FB_CFB_COPYAREA
+ select FB_CFB_IMAGEBLIT
+ help
+ This is the framebuffer driver for the AMD Au1200 SOC. It can drive
+ various panels and CRTs by passing in kernel cmd line option
+ au1200fb:panel=<name>.
+
source "drivers/video/geode/Kconfig"
config FB_FFB
obj-$(CONFIG_FB_PXA) += pxafb.o
obj-$(CONFIG_FB_W100) += w100fb.o
obj-$(CONFIG_FB_AU1100) += au1100fb.o
+obj-$(CONFIG_FB_AU1200) += au1200fb.o
obj-$(CONFIG_FB_PMAG_AA) += pmag-aa-fb.o
obj-$(CONFIG_FB_PMAG_BA) += pmag-ba-fb.o
obj-$(CONFIG_FB_PMAGB_B) += pmagb-b-fb.o
/*
* Try to select a suitable default mode
*/
- for (i = 0; i < sizeof(modedb) / sizeof(*modedb); i++) {
+ for (i = 0; i < ARRAY_SIZE(modedb); i++) {
unsigned long hs;
hs = modedb[i].refresh *
*/
free_unused_pages(PAGE_OFFSET + size, PAGE_OFFSET + MAX_SIZE);
#endif
-
+
fb_info.fix.smem_len = size;
current_par.palette_size = VIDC_PALETTE_SIZE;
*/
do {
rc = fb_find_mode(&fb_info.var, &fb_info, NULL, modedb,
- sizeof(modedb) / sizeof(*modedb),
+ ARRAY_SIZE(modedb),
&acornfb_default_mode, DEFAULT_BPP);
/*
* If we found an exact match, all ok.
break;
rc = fb_find_mode(&fb_info.var, &fb_info, NULL, modedb,
- sizeof(modedb) / sizeof(*modedb),
+ ARRAY_SIZE(modedb),
&acornfb_default_mode, DEFAULT_BPP);
if (rc)
break;
unsigned char data;
};
-#define N_ELTS(x) (sizeof(x) / sizeof(x[0]))
-
static struct chips_init_reg chips_init_sr[] =
{
{0x00, 0x03}, /* Reset register */
{
int i;
- for (i = 0; i < N_ELTS(chips_init_xr); ++i)
+ for (i = 0; i < ARRAY_SIZE(chips_init_xr); ++i)
write_xr(chips_init_xr[i].addr, chips_init_xr[i].data);
write_xr(0x81, 0x12);
write_xr(0x82, 0x08);
write_xr(0x20, 0x00);
- for (i = 0; i < N_ELTS(chips_init_sr); ++i)
+ for (i = 0; i < ARRAY_SIZE(chips_init_sr); ++i)
write_sr(chips_init_sr[i].addr, chips_init_sr[i].data);
- for (i = 0; i < N_ELTS(chips_init_gr); ++i)
+ for (i = 0; i < ARRAY_SIZE(chips_init_gr); ++i)
write_gr(chips_init_gr[i].addr, chips_init_gr[i].data);
- for (i = 0; i < N_ELTS(chips_init_ar); ++i)
+ for (i = 0; i < ARRAY_SIZE(chips_init_ar); ++i)
write_ar(chips_init_ar[i].addr, chips_init_ar[i].data);
/* Enable video output in attribute index register */
writeb(0x20, mmio_base + 0x780);
- for (i = 0; i < N_ELTS(chips_init_cr); ++i)
+ for (i = 0; i < ARRAY_SIZE(chips_init_cr); ++i)
write_cr(chips_init_cr[i].addr, chips_init_cr[i].data);
- for (i = 0; i < N_ELTS(chips_init_fr); ++i)
+ for (i = 0; i < ARRAY_SIZE(chips_init_fr); ++i)
write_fr(chips_init_fr[i].addr, chips_init_fr[i].data);
}
strcpy(video_card, "Rage128 XX ");
video_card[8] = ent->device >> 8;
video_card[9] = ent->device & 0xFF;
-
+
/* range check to make sure */
- if (ent->driver_data < (sizeof(r128_family)/sizeof(char *)))
+ if (ent->driver_data < ARRAY_SIZE(r128_family))
strncat(video_card, r128_family[ent->driver_data], sizeof(video_card));
printk(KERN_INFO "aty128fb: %s [chip rev 0x%x] ", video_card, chip_rev);
const char *name;
int i;
- for (i = sizeof(aty_chips) / sizeof(*aty_chips) - 1; i >= 0; i--)
+ for (i = ARRAY_SIZE(aty_chips) - 1; i >= 0; i--)
if (par->pci_id == aty_chips[i].pci_id)
break;
if (IS_XL(par->pci_id) || IS_MOBILITY(par->pci_id)) {
refresh_tbl = ragexl_tbl;
- size = sizeof(ragexl_tbl)/sizeof(int);
+ size = ARRAY_SIZE(ragexl_tbl);
} else {
refresh_tbl = ragepro_tbl;
- size = sizeof(ragepro_tbl)/sizeof(int);
+ size = ARRAY_SIZE(ragepro_tbl);
}
for (i=0; i < size; i++) {
case CLK_ATI18818_1:
par->pll_ops = &aty_pll_ati18818_1;
break;
+ case CLK_IBMRGB514:
+ par->pll_ops = &aty_pll_ibm514;
+ break;
+#if 0 /* dead code */
case CLK_STG1703:
par->pll_ops = &aty_pll_stg1703;
break;
case CLK_ATT20C408:
par->pll_ops = &aty_pll_att20c408;
break;
- case CLK_IBMRGB514:
- par->pll_ops = &aty_pll_ibm514;
- break;
+#endif
default:
PRINTKI("aty_init: CLK type not implemented yet!");
par->pll_ops = &aty_pll_unsupported;
struct atyfb_par *par;
int i, rc = -ENOMEM;
- for (i = sizeof(aty_chips) / sizeof(*aty_chips) - 1; i >= 0; i--)
+ for (i = ARRAY_SIZE(aty_chips); i >= 0; i--)
if (pdev->device == aty_chips[i].pci_id)
break;
};
int i;
- for (i = 0; i < sizeof(RGB514_clocks) / sizeof(*RGB514_clocks);
- i++)
+ for (i = 0; i < ARRAY_SIZE(RGB514_clocks); i++)
if (vclk_per <= RGB514_clocks[i].limit) {
pll->ibm514.m = RGB514_clocks[i].m;
pll->ibm514.n = RGB514_clocks[i].n;
if (regno > 255)
- return 1;
+ return -EINVAL;
red >>= 8;
green >>= 8;
pindex = regno * 8;
if (rinfo->depth == 16 && regno > 63)
- return 1;
+ return -EINVAL;
if (rinfo->depth == 15 && regno > 31)
- return 1;
+ return -EINVAL;
/* For 565, the green component is mixed one order
* below
--- /dev/null
+/*
+ * BRIEF MODULE DESCRIPTION
+ * Au1200 LCD Driver.
+ *
+ * Copyright 2004-2005 AMD
+ * Author: AMD
+ *
+ * Based on:
+ * linux/drivers/video/skeletonfb.c -- Skeleton for a frame buffer device
+ * Created 28 Dec 1997 by Geert Uytterhoeven
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/fb.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/ctype.h>
+#include <linux/dma-mapping.h>
+
+#include <asm/mach-au1x00/au1000.h>
+#include "au1200fb.h"
+
+#ifdef CONFIG_PM
+#include <asm/mach-au1x00/au1xxx_pm.h>
+#endif
+
+#ifndef CONFIG_FB_AU1200_DEVS
+#define CONFIG_FB_AU1200_DEVS 4
+#endif
+
+#define DRIVER_NAME "au1200fb"
+#define DRIVER_DESC "LCD controller driver for AU1200 processors"
+
+#define DEBUG 1
+
+#define print_err(f, arg...) printk(KERN_ERR DRIVER_NAME ": " f "\n", ## arg)
+#define print_warn(f, arg...) printk(KERN_WARNING DRIVER_NAME ": " f "\n", ## arg)
+#define print_info(f, arg...) printk(KERN_INFO DRIVER_NAME ": " f "\n", ## arg)
+
+#if DEBUG
+#define print_dbg(f, arg...) printk(KERN_DEBUG __FILE__ ": " f "\n", ## arg)
+#else
+#define print_dbg(f, arg...) do {} while (0)
+#endif
+
+
+#define AU1200_LCD_FB_IOCTL 0x46FF
+
+#define AU1200_LCD_SET_SCREEN 1
+#define AU1200_LCD_GET_SCREEN 2
+#define AU1200_LCD_SET_WINDOW 3
+#define AU1200_LCD_GET_WINDOW 4
+#define AU1200_LCD_SET_PANEL 5
+#define AU1200_LCD_GET_PANEL 6
+
+#define SCREEN_SIZE (1<< 1)
+#define SCREEN_BACKCOLOR (1<< 2)
+#define SCREEN_BRIGHTNESS (1<< 3)
+#define SCREEN_COLORKEY (1<< 4)
+#define SCREEN_MASK (1<< 5)
+
+struct au1200_lcd_global_regs_t {
+ unsigned int flags;
+ unsigned int xsize;
+ unsigned int ysize;
+ unsigned int backcolor;
+ unsigned int brightness;
+ unsigned int colorkey;
+ unsigned int mask;
+ unsigned int panel_choice;
+ char panel_desc[80];
+
+};
+
+#define WIN_POSITION (1<< 0)
+#define WIN_ALPHA_COLOR (1<< 1)
+#define WIN_ALPHA_MODE (1<< 2)
+#define WIN_PRIORITY (1<< 3)
+#define WIN_CHANNEL (1<< 4)
+#define WIN_BUFFER_FORMAT (1<< 5)
+#define WIN_COLOR_ORDER (1<< 6)
+#define WIN_PIXEL_ORDER (1<< 7)
+#define WIN_SIZE (1<< 8)
+#define WIN_COLORKEY_MODE (1<< 9)
+#define WIN_DOUBLE_BUFFER_MODE (1<< 10)
+#define WIN_RAM_ARRAY_MODE (1<< 11)
+#define WIN_BUFFER_SCALE (1<< 12)
+#define WIN_ENABLE (1<< 13)
+
+struct au1200_lcd_window_regs_t {
+ unsigned int flags;
+ unsigned int xpos;
+ unsigned int ypos;
+ unsigned int alpha_color;
+ unsigned int alpha_mode;
+ unsigned int priority;
+ unsigned int channel;
+ unsigned int buffer_format;
+ unsigned int color_order;
+ unsigned int pixel_order;
+ unsigned int xsize;
+ unsigned int ysize;
+ unsigned int colorkey_mode;
+ unsigned int double_buffer_mode;
+ unsigned int ram_array_mode;
+ unsigned int xscale;
+ unsigned int yscale;
+ unsigned int enable;
+};
+
+
+struct au1200_lcd_iodata_t {
+ unsigned int subcmd;
+ struct au1200_lcd_global_regs_t global;
+ struct au1200_lcd_window_regs_t window;
+};
+
+#if defined(__BIG_ENDIAN)
+#define LCD_CONTROL_DEFAULT_PO LCD_CONTROL_PO_11
+#else
+#define LCD_CONTROL_DEFAULT_PO LCD_CONTROL_PO_00
+#endif
+#define LCD_CONTROL_DEFAULT_SBPPF LCD_CONTROL_SBPPF_565
+
+/* Private, per-framebuffer management information (independent of the panel itself) */
+struct au1200fb_device {
+ struct fb_info fb_info; /* FB driver info record */
+
+ int plane;
+ unsigned char* fb_mem; /* FrameBuffer memory map */
+ unsigned int fb_len;
+ dma_addr_t fb_phys;
+};
+
+static struct au1200fb_device _au1200fb_devices[CONFIG_FB_AU1200_DEVS];
+/********************************************************************/
+
+/* LCD controller restrictions */
+#define AU1200_LCD_MAX_XRES 1280
+#define AU1200_LCD_MAX_YRES 1024
+#define AU1200_LCD_MAX_BPP 32
+#define AU1200_LCD_MAX_CLK 96000000 /* fixme: this needs to go away ? */
+#define AU1200_LCD_NBR_PALETTE_ENTRIES 256
+
+/* Default number of visible screen buffer to allocate */
+#define AU1200FB_NBR_VIDEO_BUFFERS 1
+
+/********************************************************************/
+
+static struct au1200_lcd *lcd = (struct au1200_lcd *) AU1200_LCD_ADDR;
+static int window_index = 2; /* default is zero */
+static int panel_index = 2; /* default is zero */
+static struct window_settings *win;
+static struct panel_settings *panel;
+static int noblanking = 1;
+static int nohwcursor = 0;
+
+struct window_settings {
+ unsigned char name[64];
+ uint32 mode_backcolor;
+ uint32 mode_colorkey;
+ uint32 mode_colorkeymsk;
+ struct {
+ int xres;
+ int yres;
+ int xpos;
+ int ypos;
+ uint32 mode_winctrl1; /* winctrl1[FRM,CCO,PO,PIPE] */
+ uint32 mode_winenable;
+ } w[4];
+};
+
+#if defined(__BIG_ENDIAN)
+#define LCD_WINCTRL1_PO_16BPP LCD_WINCTRL1_PO_00
+#else
+#define LCD_WINCTRL1_PO_16BPP LCD_WINCTRL1_PO_01
+#endif
+
+extern int board_au1200fb_panel_init (void);
+extern int board_au1200fb_panel_shutdown (void);
+
+#ifdef CONFIG_PM
+int au1200fb_pm_callback(au1xxx_power_dev_t *dev,
+ au1xxx_request_t request, void *data);
+au1xxx_power_dev_t *LCD_pm_dev;
+#endif
+
+/*
+ * Default window configurations
+ */
+static struct window_settings windows[] = {
+ { /* Index 0 */
+ "0-FS gfx, 1-video, 2-ovly gfx, 3-ovly gfx",
+ /* mode_backcolor */ 0x006600ff,
+ /* mode_colorkey,msk*/ 0, 0,
+ {
+ {
+ /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
+ /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
+ LCD_WINCTRL1_PO_16BPP,
+ /* mode_winenable*/ LCD_WINENABLE_WEN0,
+ },
+ {
+ /* xres, yres, xpos, ypos */ 100, 100, 100, 100,
+ /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
+ LCD_WINCTRL1_PO_16BPP |
+ LCD_WINCTRL1_PIPE,
+ /* mode_winenable*/ LCD_WINENABLE_WEN1,
+ },
+ {
+ /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
+ /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
+ LCD_WINCTRL1_PO_16BPP,
+ /* mode_winenable*/ 0,
+ },
+ {
+ /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
+ /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
+ LCD_WINCTRL1_PO_16BPP |
+ LCD_WINCTRL1_PIPE,
+ /* mode_winenable*/ 0,
+ },
+ },
+ },
+
+ { /* Index 1 */
+ "0-FS gfx, 1-video, 2-ovly gfx, 3-ovly gfx",
+ /* mode_backcolor */ 0x006600ff,
+ /* mode_colorkey,msk*/ 0, 0,
+ {
+ {
+ /* xres, yres, xpos, ypos */ 320, 240, 5, 5,
+ /* mode_winctrl1 */ LCD_WINCTRL1_FRM_24BPP |
+ LCD_WINCTRL1_PO_00,
+ /* mode_winenable*/ LCD_WINENABLE_WEN0,
+ },
+ {
+ /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
+ /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565
+ | LCD_WINCTRL1_PO_16BPP,
+ /* mode_winenable*/ 0,
+ },
+ {
+ /* xres, yres, xpos, ypos */ 100, 100, 0, 0,
+ /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
+ LCD_WINCTRL1_PO_16BPP |
+ LCD_WINCTRL1_PIPE,
+ /* mode_winenable*/ 0/*LCD_WINENABLE_WEN2*/,
+ },
+ {
+ /* xres, yres, xpos, ypos */ 200, 25, 0, 0,
+ /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
+ LCD_WINCTRL1_PO_16BPP |
+ LCD_WINCTRL1_PIPE,
+ /* mode_winenable*/ 0,
+ },
+ },
+ },
+ { /* Index 2 */
+ "0-FS gfx, 1-video, 2-ovly gfx, 3-ovly gfx",
+ /* mode_backcolor */ 0x006600ff,
+ /* mode_colorkey,msk*/ 0, 0,
+ {
+ {
+ /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
+ /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
+ LCD_WINCTRL1_PO_16BPP,
+ /* mode_winenable*/ LCD_WINENABLE_WEN0,
+ },
+ {
+ /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
+ /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
+ LCD_WINCTRL1_PO_16BPP,
+ /* mode_winenable*/ 0,
+ },
+ {
+ /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
+ /* mode_winctrl1 */ LCD_WINCTRL1_FRM_32BPP |
+ LCD_WINCTRL1_PO_00|LCD_WINCTRL1_PIPE,
+ /* mode_winenable*/ 0/*LCD_WINENABLE_WEN2*/,
+ },
+ {
+ /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
+ /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
+ LCD_WINCTRL1_PO_16BPP |
+ LCD_WINCTRL1_PIPE,
+ /* mode_winenable*/ 0,
+ },
+ },
+ },
+ /* Need VGA 640 @ 24bpp, @ 32bpp */
+ /* Need VGA 800 @ 24bpp, @ 32bpp */
+ /* Need VGA 1024 @ 24bpp, @ 32bpp */
+};
+
+/*
+ * Controller configurations for various panels.
+ */
+
+struct panel_settings
+{
+ const char name[25]; /* Full name <vendor>_<model> */
+
+ struct fb_monspecs monspecs; /* FB monitor specs */
+
+ /* panel timings */
+ uint32 mode_screen;
+ uint32 mode_horztiming;
+ uint32 mode_verttiming;
+ uint32 mode_clkcontrol;
+ uint32 mode_pwmdiv;
+ uint32 mode_pwmhi;
+ uint32 mode_outmask;
+ uint32 mode_fifoctrl;
+ uint32 mode_toyclksrc;
+ uint32 mode_backlight;
+ uint32 mode_auxpll;
+ int (*device_init)(void);
+ int (*device_shutdown)(void);
+#define Xres min_xres
+#define Yres min_yres
+ u32 min_xres; /* Minimum horizontal resolution */
+ u32 max_xres; /* Maximum horizontal resolution */
+ u32 min_yres; /* Minimum vertical resolution */
+ u32 max_yres; /* Maximum vertical resolution */
+};
+
+/********************************************************************/
+/* fixme: Maybe a modedb for the CRT ? otherwise panels should be as-is */
+
+/* List of panels known to work with the AU1200 LCD controller.
+ * To add a new panel, enter the same specifications as the
+ * Generic_TFT one, and MAKE SURE that it doesn't conflicts
+ * with the controller restrictions. Restrictions are:
+ *
+ * STN color panels: max_bpp <= 12
+ * STN mono panels: max_bpp <= 4
+ * TFT panels: max_bpp <= 16
+ * max_xres <= 800
+ * max_yres <= 600
+ */
+static struct panel_settings known_lcd_panels[] =
+{
+ [0] = { /* QVGA 320x240 H:33.3kHz V:110Hz */
+ .name = "QVGA_320x240",
+ .monspecs = {
+ .modedb = NULL,
+ .modedb_len = 0,
+ .hfmin = 30000,
+ .hfmax = 70000,
+ .vfmin = 60,
+ .vfmax = 60,
+ .dclkmin = 6000000,
+ .dclkmax = 28000000,
+ .input = FB_DISP_RGB,
+ },
+ .mode_screen = LCD_SCREEN_SX_N(320) |
+ LCD_SCREEN_SY_N(240),
+ .mode_horztiming = 0x00c4623b,
+ .mode_verttiming = 0x00502814,
+ .mode_clkcontrol = 0x00020002, /* /4=24Mhz */
+ .mode_pwmdiv = 0x00000000,
+ .mode_pwmhi = 0x00000000,
+ .mode_outmask = 0x00FFFFFF,
+ .mode_fifoctrl = 0x2f2f2f2f,
+ .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
+ .mode_backlight = 0x00000000,
+ .mode_auxpll = 8, /* 96MHz AUXPLL */
+ .device_init = NULL,
+ .device_shutdown = NULL,
+ 320, 320,
+ 240, 240,
+ },
+
+ [1] = { /* VGA 640x480 H:30.3kHz V:58Hz */
+ .name = "VGA_640x480",
+ .monspecs = {
+ .modedb = NULL,
+ .modedb_len = 0,
+ .hfmin = 30000,
+ .hfmax = 70000,
+ .vfmin = 60,
+ .vfmax = 60,
+ .dclkmin = 6000000,
+ .dclkmax = 28000000,
+ .input = FB_DISP_RGB,
+ },
+ .mode_screen = 0x13f9df80,
+ .mode_horztiming = 0x003c5859,
+ .mode_verttiming = 0x00741201,
+ .mode_clkcontrol = 0x00020001, /* /4=24Mhz */
+ .mode_pwmdiv = 0x00000000,
+ .mode_pwmhi = 0x00000000,
+ .mode_outmask = 0x00FFFFFF,
+ .mode_fifoctrl = 0x2f2f2f2f,
+ .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
+ .mode_backlight = 0x00000000,
+ .mode_auxpll = 8, /* 96MHz AUXPLL */
+ .device_init = NULL,
+ .device_shutdown = NULL,
+ 640, 480,
+ 640, 480,
+ },
+
+ [2] = { /* SVGA 800x600 H:46.1kHz V:69Hz */
+ .name = "SVGA_800x600",
+ .monspecs = {
+ .modedb = NULL,
+ .modedb_len = 0,
+ .hfmin = 30000,
+ .hfmax = 70000,
+ .vfmin = 60,
+ .vfmax = 60,
+ .dclkmin = 6000000,
+ .dclkmax = 28000000,
+ .input = FB_DISP_RGB,
+ },
+ .mode_screen = 0x18fa5780,
+ .mode_horztiming = 0x00dc7e77,
+ .mode_verttiming = 0x00584805,
+ .mode_clkcontrol = 0x00020000, /* /2=48Mhz */
+ .mode_pwmdiv = 0x00000000,
+ .mode_pwmhi = 0x00000000,
+ .mode_outmask = 0x00FFFFFF,
+ .mode_fifoctrl = 0x2f2f2f2f,
+ .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
+ .mode_backlight = 0x00000000,
+ .mode_auxpll = 8, /* 96MHz AUXPLL */
+ .device_init = NULL,
+ .device_shutdown = NULL,
+ 800, 800,
+ 600, 600,
+ },
+
+ [3] = { /* XVGA 1024x768 H:56.2kHz V:70Hz */
+ .name = "XVGA_1024x768",
+ .monspecs = {
+ .modedb = NULL,
+ .modedb_len = 0,
+ .hfmin = 30000,
+ .hfmax = 70000,
+ .vfmin = 60,
+ .vfmax = 60,
+ .dclkmin = 6000000,
+ .dclkmax = 28000000,
+ .input = FB_DISP_RGB,
+ },
+ .mode_screen = 0x1ffaff80,
+ .mode_horztiming = 0x007d0e57,
+ .mode_verttiming = 0x00740a01,
+ .mode_clkcontrol = 0x000A0000, /* /1 */
+ .mode_pwmdiv = 0x00000000,
+ .mode_pwmhi = 0x00000000,
+ .mode_outmask = 0x00FFFFFF,
+ .mode_fifoctrl = 0x2f2f2f2f,
+ .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
+ .mode_backlight = 0x00000000,
+ .mode_auxpll = 6, /* 72MHz AUXPLL */
+ .device_init = NULL,
+ .device_shutdown = NULL,
+ 1024, 1024,
+ 768, 768,
+ },
+
+ [4] = { /* XVGA XVGA 1280x1024 H:68.5kHz V:65Hz */
+ .name = "XVGA_1280x1024",
+ .monspecs = {
+ .modedb = NULL,
+ .modedb_len = 0,
+ .hfmin = 30000,
+ .hfmax = 70000,
+ .vfmin = 60,
+ .vfmax = 60,
+ .dclkmin = 6000000,
+ .dclkmax = 28000000,
+ .input = FB_DISP_RGB,
+ },
+ .mode_screen = 0x27fbff80,
+ .mode_horztiming = 0x00cdb2c7,
+ .mode_verttiming = 0x00600002,
+ .mode_clkcontrol = 0x000A0000, /* /1 */
+ .mode_pwmdiv = 0x00000000,
+ .mode_pwmhi = 0x00000000,
+ .mode_outmask = 0x00FFFFFF,
+ .mode_fifoctrl = 0x2f2f2f2f,
+ .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
+ .mode_backlight = 0x00000000,
+ .mode_auxpll = 10, /* 120MHz AUXPLL */
+ .device_init = NULL,
+ .device_shutdown = NULL,
+ 1280, 1280,
+ 1024, 1024,
+ },
+
+ [5] = { /* Samsung 1024x768 TFT */
+ .name = "Samsung_1024x768_TFT",
+ .monspecs = {
+ .modedb = NULL,
+ .modedb_len = 0,
+ .hfmin = 30000,
+ .hfmax = 70000,
+ .vfmin = 60,
+ .vfmax = 60,
+ .dclkmin = 6000000,
+ .dclkmax = 28000000,
+ .input = FB_DISP_RGB,
+ },
+ .mode_screen = 0x1ffaff80,
+ .mode_horztiming = 0x018cc677,
+ .mode_verttiming = 0x00241217,
+ .mode_clkcontrol = 0x00000000, /* SCB 0x1 /4=24Mhz */
+ .mode_pwmdiv = 0x8000063f, /* SCB 0x0 */
+ .mode_pwmhi = 0x03400000, /* SCB 0x0 */
+ .mode_outmask = 0x00FFFFFF,
+ .mode_fifoctrl = 0x2f2f2f2f,
+ .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
+ .mode_backlight = 0x00000000,
+ .mode_auxpll = 8, /* 96MHz AUXPLL */
+ .device_init = board_au1200fb_panel_init,
+ .device_shutdown = board_au1200fb_panel_shutdown,
+ 1024, 1024,
+ 768, 768,
+ },
+
+ [6] = { /* Toshiba 640x480 TFT */
+ .name = "Toshiba_640x480_TFT",
+ .monspecs = {
+ .modedb = NULL,
+ .modedb_len = 0,
+ .hfmin = 30000,
+ .hfmax = 70000,
+ .vfmin = 60,
+ .vfmax = 60,
+ .dclkmin = 6000000,
+ .dclkmax = 28000000,
+ .input = FB_DISP_RGB,
+ },
+ .mode_screen = LCD_SCREEN_SX_N(640) |
+ LCD_SCREEN_SY_N(480),
+ .mode_horztiming = LCD_HORZTIMING_HPW_N(96) |
+ LCD_HORZTIMING_HND1_N(13) | LCD_HORZTIMING_HND2_N(51),
+ .mode_verttiming = LCD_VERTTIMING_VPW_N(2) |
+ LCD_VERTTIMING_VND1_N(11) | LCD_VERTTIMING_VND2_N(32),
+ .mode_clkcontrol = 0x00000000, /* /4=24Mhz */
+ .mode_pwmdiv = 0x8000063f,
+ .mode_pwmhi = 0x03400000,
+ .mode_outmask = 0x00fcfcfc,
+ .mode_fifoctrl = 0x2f2f2f2f,
+ .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
+ .mode_backlight = 0x00000000,
+ .mode_auxpll = 8, /* 96MHz AUXPLL */
+ .device_init = board_au1200fb_panel_init,
+ .device_shutdown = board_au1200fb_panel_shutdown,
+ 640, 480,
+ 640, 480,
+ },
+
+ [7] = { /* Sharp 320x240 TFT */
+ .name = "Sharp_320x240_TFT",
+ .monspecs = {
+ .modedb = NULL,
+ .modedb_len = 0,
+ .hfmin = 12500,
+ .hfmax = 20000,
+ .vfmin = 38,
+ .vfmax = 81,
+ .dclkmin = 4500000,
+ .dclkmax = 6800000,
+ .input = FB_DISP_RGB,
+ },
+ .mode_screen = LCD_SCREEN_SX_N(320) |
+ LCD_SCREEN_SY_N(240),
+ .mode_horztiming = LCD_HORZTIMING_HPW_N(60) |
+ LCD_HORZTIMING_HND1_N(13) | LCD_HORZTIMING_HND2_N(2),
+ .mode_verttiming = LCD_VERTTIMING_VPW_N(2) |
+ LCD_VERTTIMING_VND1_N(2) | LCD_VERTTIMING_VND2_N(5),
+ .mode_clkcontrol = LCD_CLKCONTROL_PCD_N(7), /*16=6Mhz*/
+ .mode_pwmdiv = 0x8000063f,
+ .mode_pwmhi = 0x03400000,
+ .mode_outmask = 0x00fcfcfc,
+ .mode_fifoctrl = 0x2f2f2f2f,
+ .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
+ .mode_backlight = 0x00000000,
+ .mode_auxpll = 8, /* 96MHz AUXPLL */
+ .device_init = board_au1200fb_panel_init,
+ .device_shutdown = board_au1200fb_panel_shutdown,
+ 320, 320,
+ 240, 240,
+ },
+
+ [8] = { /* Toppoly TD070WGCB2 7" 856x480 TFT */
+ .name = "Toppoly_TD070WGCB2",
+ .monspecs = {
+ .modedb = NULL,
+ .modedb_len = 0,
+ .hfmin = 30000,
+ .hfmax = 70000,
+ .vfmin = 60,
+ .vfmax = 60,
+ .dclkmin = 6000000,
+ .dclkmax = 28000000,
+ .input = FB_DISP_RGB,
+ },
+ .mode_screen = LCD_SCREEN_SX_N(856) |
+ LCD_SCREEN_SY_N(480),
+ .mode_horztiming = LCD_HORZTIMING_HND2_N(43) |
+ LCD_HORZTIMING_HND1_N(43) | LCD_HORZTIMING_HPW_N(114),
+ .mode_verttiming = LCD_VERTTIMING_VND2_N(20) |
+ LCD_VERTTIMING_VND1_N(21) | LCD_VERTTIMING_VPW_N(4),
+ .mode_clkcontrol = 0x00020001, /* /4=24Mhz */
+ .mode_pwmdiv = 0x8000063f,
+ .mode_pwmhi = 0x03400000,
+ .mode_outmask = 0x00fcfcfc,
+ .mode_fifoctrl = 0x2f2f2f2f,
+ .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
+ .mode_backlight = 0x00000000,
+ .mode_auxpll = 8, /* 96MHz AUXPLL */
+ .device_init = board_au1200fb_panel_init,
+ .device_shutdown = board_au1200fb_panel_shutdown,
+ 856, 856,
+ 480, 480,
+ },
+};
+
+#define NUM_PANELS (ARRAY_SIZE(known_lcd_panels))
+
+/********************************************************************/
+
+#ifdef CONFIG_PM
+static int set_brightness(unsigned int brightness)
+{
+ unsigned int hi1, divider;
+
+ /* limit brightness pwm duty to >= 30/1600 */
+ if (brightness < 30) {
+ brightness = 30;
+ }
+ divider = (lcd->pwmdiv & 0x3FFFF) + 1;
+ hi1 = (lcd->pwmhi >> 16) + 1;
+ hi1 = (((brightness & 0xFF) + 1) * divider >> 8);
+ lcd->pwmhi &= 0xFFFF;
+ lcd->pwmhi |= (hi1 << 16);
+
+ return brightness;
+}
+#endif /* CONFIG_PM */
+
+static int winbpp (unsigned int winctrl1)
+{
+ int bits = 0;
+
+ /* how many bits are needed for each pixel format */
+ switch (winctrl1 & LCD_WINCTRL1_FRM) {
+ case LCD_WINCTRL1_FRM_1BPP:
+ bits = 1;
+ break;
+ case LCD_WINCTRL1_FRM_2BPP:
+ bits = 2;
+ break;
+ case LCD_WINCTRL1_FRM_4BPP:
+ bits = 4;
+ break;
+ case LCD_WINCTRL1_FRM_8BPP:
+ bits = 8;
+ break;
+ case LCD_WINCTRL1_FRM_12BPP:
+ case LCD_WINCTRL1_FRM_16BPP655:
+ case LCD_WINCTRL1_FRM_16BPP565:
+ case LCD_WINCTRL1_FRM_16BPP556:
+ case LCD_WINCTRL1_FRM_16BPPI1555:
+ case LCD_WINCTRL1_FRM_16BPPI5551:
+ case LCD_WINCTRL1_FRM_16BPPA1555:
+ case LCD_WINCTRL1_FRM_16BPPA5551:
+ bits = 16;
+ break;
+ case LCD_WINCTRL1_FRM_24BPP:
+ case LCD_WINCTRL1_FRM_32BPP:
+ bits = 32;
+ break;
+ }
+
+ return bits;
+}
+
+static int fbinfo2index (struct fb_info *fb_info)
+{
+ int i;
+
+ for (i = 0; i < CONFIG_FB_AU1200_DEVS; ++i) {
+ if (fb_info == (struct fb_info *)(&_au1200fb_devices[i].fb_info))
+ return i;
+ }
+ printk("au1200fb: ERROR: fbinfo2index failed!\n");
+ return -1;
+}
+
+static int au1200_setlocation (struct au1200fb_device *fbdev, int plane,
+ int xpos, int ypos)
+{
+ uint32 winctrl0, winctrl1, winenable, fb_offset = 0;
+ int xsz, ysz;
+
+ /* FIX!!! NOT CHECKING FOR COMPLETE OFFSCREEN YET */
+
+ winctrl0 = lcd->window[plane].winctrl0;
+ winctrl1 = lcd->window[plane].winctrl1;
+ winctrl0 &= (LCD_WINCTRL0_A | LCD_WINCTRL0_AEN);
+ winctrl1 &= ~(LCD_WINCTRL1_SZX | LCD_WINCTRL1_SZY);
+
+ /* Check for off-screen adjustments */
+ xsz = win->w[plane].xres;
+ ysz = win->w[plane].yres;
+ if ((xpos + win->w[plane].xres) > panel->Xres) {
+ /* Off-screen to the right */
+ xsz = panel->Xres - xpos; /* off by 1 ??? */
+ /*printk("off screen right\n");*/
+ }
+
+ if ((ypos + win->w[plane].yres) > panel->Yres) {
+ /* Off-screen to the bottom */
+ ysz = panel->Yres - ypos; /* off by 1 ??? */
+ /*printk("off screen bottom\n");*/
+ }
+
+ if (xpos < 0) {
+ /* Off-screen to the left */
+ xsz = win->w[plane].xres + xpos;
+ fb_offset += (((0 - xpos) * winbpp(lcd->window[plane].winctrl1))/8);
+ xpos = 0;
+ /*printk("off screen left\n");*/
+ }
+
+ if (ypos < 0) {
+ /* Off-screen to the top */
+ ysz = win->w[plane].yres + ypos;
+ /* fixme: fb_offset += ((0-ypos)*fb_pars[plane].line_length); */
+ ypos = 0;
+ /*printk("off screen top\n");*/
+ }
+
+ /* record settings */
+ win->w[plane].xpos = xpos;
+ win->w[plane].ypos = ypos;
+
+ xsz -= 1;
+ ysz -= 1;
+ winctrl0 |= (xpos << 21);
+ winctrl0 |= (ypos << 10);
+ winctrl1 |= (xsz << 11);
+ winctrl1 |= (ysz << 0);
+
+ /* Disable the window while making changes, then restore WINEN */
+ winenable = lcd->winenable & (1 << plane);
+ au_sync();
+ lcd->winenable &= ~(1 << plane);
+ lcd->window[plane].winctrl0 = winctrl0;
+ lcd->window[plane].winctrl1 = winctrl1;
+ lcd->window[plane].winbuf0 =
+ lcd->window[plane].winbuf1 = fbdev->fb_phys;
+ lcd->window[plane].winbufctrl = 0; /* select winbuf0 */
+ lcd->winenable |= winenable;
+ au_sync();
+
+ return 0;
+}
+
+static void au1200_setpanel (struct panel_settings *newpanel)
+{
+ /*
+ * Perform global setup/init of LCD controller
+ */
+ uint32 winenable;
+
+ /* Make sure all windows disabled */
+ winenable = lcd->winenable;
+ lcd->winenable = 0;
+ au_sync();
+ /*
+ * Ensure everything is disabled before reconfiguring
+ */
+ if (lcd->screen & LCD_SCREEN_SEN) {
+ /* Wait for vertical sync period */
+ lcd->intstatus = LCD_INT_SS;
+ while ((lcd->intstatus & LCD_INT_SS) == 0) {
+ au_sync();
+ }
+
+ lcd->screen &= ~LCD_SCREEN_SEN; /*disable the controller*/
+
+ do {
+ lcd->intstatus = lcd->intstatus; /*clear interrupts*/
+ au_sync();
+ /*wait for controller to shut down*/
+ } while ((lcd->intstatus & LCD_INT_SD) == 0);
+
+ /* Call shutdown of current panel (if up) */
+ /* this must occur last, because if an external clock is driving
+ the controller, the clock cannot be turned off before first
+ shutting down the controller.
+ */
+ if (panel->device_shutdown != NULL)
+ panel->device_shutdown();
+ }
+
+ /* Newpanel == NULL indicates a shutdown operation only */
+ if (newpanel == NULL)
+ return;
+
+ panel = newpanel;
+
+ printk("Panel(%s), %dx%d\n", panel->name, panel->Xres, panel->Yres);
+
+ /*
+ * Setup clocking if internal LCD clock source (assumes sys_auxpll valid)
+ */
+ if (!(panel->mode_clkcontrol & LCD_CLKCONTROL_EXT))
+ {
+ uint32 sys_clksrc;
+ au_writel(panel->mode_auxpll, SYS_AUXPLL);
+ sys_clksrc = au_readl(SYS_CLKSRC) & ~0x0000001f;
+ sys_clksrc |= panel->mode_toyclksrc;
+ au_writel(sys_clksrc, SYS_CLKSRC);
+ }
+
+ /*
+ * Configure panel timings
+ */
+ lcd->screen = panel->mode_screen;
+ lcd->horztiming = panel->mode_horztiming;
+ lcd->verttiming = panel->mode_verttiming;
+ lcd->clkcontrol = panel->mode_clkcontrol;
+ lcd->pwmdiv = panel->mode_pwmdiv;
+ lcd->pwmhi = panel->mode_pwmhi;
+ lcd->outmask = panel->mode_outmask;
+ lcd->fifoctrl = panel->mode_fifoctrl;
+ au_sync();
+
+ /* fixme: Check window settings to make sure still valid
+ * for new geometry */
+#if 0
+ au1200_setlocation(fbdev, 0, win->w[0].xpos, win->w[0].ypos);
+ au1200_setlocation(fbdev, 1, win->w[1].xpos, win->w[1].ypos);
+ au1200_setlocation(fbdev, 2, win->w[2].xpos, win->w[2].ypos);
+ au1200_setlocation(fbdev, 3, win->w[3].xpos, win->w[3].ypos);
+#endif
+ lcd->winenable = winenable;
+
+ /*
+ * Re-enable screen now that it is configured
+ */
+ lcd->screen |= LCD_SCREEN_SEN;
+ au_sync();
+
+ /* Call init of panel */
+ if (panel->device_init != NULL) panel->device_init();
+
+ /* FIX!!!! not appropriate on panel change!!! Global setup/init */
+ lcd->intenable = 0;
+ lcd->intstatus = ~0;
+ lcd->backcolor = win->mode_backcolor;
+
+ /* Setup Color Key - FIX!!! */
+ lcd->colorkey = win->mode_colorkey;
+ lcd->colorkeymsk = win->mode_colorkeymsk;
+
+ /* Setup HWCursor - FIX!!! Need to support this eventually */
+ lcd->hwc.cursorctrl = 0;
+ lcd->hwc.cursorpos = 0;
+ lcd->hwc.cursorcolor0 = 0;
+ lcd->hwc.cursorcolor1 = 0;
+ lcd->hwc.cursorcolor2 = 0;
+ lcd->hwc.cursorcolor3 = 0;
+
+
+#if 0
+#define D(X) printk("%25s: %08X\n", #X, X)
+ D(lcd->screen);
+ D(lcd->horztiming);
+ D(lcd->verttiming);
+ D(lcd->clkcontrol);
+ D(lcd->pwmdiv);
+ D(lcd->pwmhi);
+ D(lcd->outmask);
+ D(lcd->fifoctrl);
+ D(lcd->window[0].winctrl0);
+ D(lcd->window[0].winctrl1);
+ D(lcd->window[0].winctrl2);
+ D(lcd->window[0].winbuf0);
+ D(lcd->window[0].winbuf1);
+ D(lcd->window[0].winbufctrl);
+ D(lcd->window[1].winctrl0);
+ D(lcd->window[1].winctrl1);
+ D(lcd->window[1].winctrl2);
+ D(lcd->window[1].winbuf0);
+ D(lcd->window[1].winbuf1);
+ D(lcd->window[1].winbufctrl);
+ D(lcd->window[2].winctrl0);
+ D(lcd->window[2].winctrl1);
+ D(lcd->window[2].winctrl2);
+ D(lcd->window[2].winbuf0);
+ D(lcd->window[2].winbuf1);
+ D(lcd->window[2].winbufctrl);
+ D(lcd->window[3].winctrl0);
+ D(lcd->window[3].winctrl1);
+ D(lcd->window[3].winctrl2);
+ D(lcd->window[3].winbuf0);
+ D(lcd->window[3].winbuf1);
+ D(lcd->window[3].winbufctrl);
+ D(lcd->winenable);
+ D(lcd->intenable);
+ D(lcd->intstatus);
+ D(lcd->backcolor);
+ D(lcd->winenable);
+ D(lcd->colorkey);
+ D(lcd->colorkeymsk);
+ D(lcd->hwc.cursorctrl);
+ D(lcd->hwc.cursorpos);
+ D(lcd->hwc.cursorcolor0);
+ D(lcd->hwc.cursorcolor1);
+ D(lcd->hwc.cursorcolor2);
+ D(lcd->hwc.cursorcolor3);
+#endif
+}
+
+static void au1200_setmode(struct au1200fb_device *fbdev)
+{
+ int plane = fbdev->plane;
+ /* Window/plane setup */
+ lcd->window[plane].winctrl1 = ( 0
+ | LCD_WINCTRL1_PRI_N(plane)
+ | win->w[plane].mode_winctrl1 /* FRM,CCO,PO,PIPE */
+ ) ;
+
+ au1200_setlocation(fbdev, plane, win->w[plane].xpos, win->w[plane].ypos);
+
+ lcd->window[plane].winctrl2 = ( 0
+ | LCD_WINCTRL2_CKMODE_00
+ | LCD_WINCTRL2_DBM
+ | LCD_WINCTRL2_BX_N( fbdev->fb_info.fix.line_length)
+ | LCD_WINCTRL2_SCX_1
+ | LCD_WINCTRL2_SCY_1
+ ) ;
+ lcd->winenable |= win->w[plane].mode_winenable;
+ au_sync();
+}
+
+
+/* Inline helpers */
+
+/*#define panel_is_dual(panel) ((panel->mode_screen & LCD_SCREEN_PT) == LCD_SCREEN_PT_010)*/
+/*#define panel_is_active(panel)((panel->mode_screen & LCD_SCREEN_PT) == LCD_SCREEN_PT_010)*/
+
+#define panel_is_color(panel) ((panel->mode_screen & LCD_SCREEN_PT) <= LCD_SCREEN_PT_CDSTN)
+
+/* Bitfields format supported by the controller. */
+static struct fb_bitfield rgb_bitfields[][4] = {
+ /* Red, Green, Blue, Transp */
+ [LCD_WINCTRL1_FRM_16BPP655 >> 25] =
+ { { 10, 6, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 0, 0, 0 } },
+
+ [LCD_WINCTRL1_FRM_16BPP565 >> 25] =
+ { { 11, 5, 0 }, { 5, 6, 0 }, { 0, 5, 0 }, { 0, 0, 0 } },
+
+ [LCD_WINCTRL1_FRM_16BPP556 >> 25] =
+ { { 11, 5, 0 }, { 6, 5, 0 }, { 0, 6, 0 }, { 0, 0, 0 } },
+
+ [LCD_WINCTRL1_FRM_16BPPI1555 >> 25] =
+ { { 10, 5, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 0, 0, 0 } },
+
+ [LCD_WINCTRL1_FRM_16BPPI5551 >> 25] =
+ { { 11, 5, 0 }, { 6, 5, 0 }, { 1, 5, 0 }, { 0, 0, 0 } },
+
+ [LCD_WINCTRL1_FRM_16BPPA1555 >> 25] =
+ { { 10, 5, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 15, 1, 0 } },
+
+ [LCD_WINCTRL1_FRM_16BPPA5551 >> 25] =
+ { { 11, 5, 0 }, { 6, 5, 0 }, { 1, 5, 0 }, { 0, 1, 0 } },
+
+ [LCD_WINCTRL1_FRM_24BPP >> 25] =
+ { { 16, 8, 0 }, { 8, 8, 0 }, { 0, 8, 0 }, { 0, 0, 0 } },
+
+ [LCD_WINCTRL1_FRM_32BPP >> 25] =
+ { { 16, 8, 0 }, { 8, 8, 0 }, { 0, 8, 0 }, { 24, 0, 0 } },
+};
+
+/*-------------------------------------------------------------------------*/
+
+/* Helpers */
+
+static void au1200fb_update_fbinfo(struct fb_info *fbi)
+{
+ /* FIX!!!! This also needs to take the window pixel format into account!!! */
+
+ /* Update var-dependent FB info */
+ if (panel_is_color(panel)) {
+ if (fbi->var.bits_per_pixel <= 8) {
+ /* palettized */
+ fbi->fix.visual = FB_VISUAL_PSEUDOCOLOR;
+ fbi->fix.line_length = fbi->var.xres_virtual /
+ (8/fbi->var.bits_per_pixel);
+ } else {
+ /* non-palettized */
+ fbi->fix.visual = FB_VISUAL_TRUECOLOR;
+ fbi->fix.line_length = fbi->var.xres_virtual * (fbi->var.bits_per_pixel / 8);
+ }
+ } else {
+ /* mono FIX!!! mono 8 and 4 bits */
+ fbi->fix.visual = FB_VISUAL_MONO10;
+ fbi->fix.line_length = fbi->var.xres_virtual / 8;
+ }
+
+ fbi->screen_size = fbi->fix.line_length * fbi->var.yres_virtual;
+ print_dbg("line length: %d\n", fbi->fix.line_length);
+ print_dbg("bits_per_pixel: %d\n", fbi->var.bits_per_pixel);
+}
+
+/*-------------------------------------------------------------------------*/
+
+/* AU1200 framebuffer driver */
+
+/* fb_check_var
+ * Validate var settings with hardware restrictions and modify it if necessary
+ */
+static int au1200fb_fb_check_var(struct fb_var_screeninfo *var,
+ struct fb_info *fbi)
+{
+ struct au1200fb_device *fbdev = (struct au1200fb_device *)fbi;
+ u32 pixclock;
+ int screen_size, plane;
+
+ plane = fbdev->plane;
+
+ /* Make sure that the mode respect all LCD controller and
+ * panel restrictions. */
+ var->xres = win->w[plane].xres;
+ var->yres = win->w[plane].yres;
+
+ /* No need for virtual resolution support */
+ var->xres_virtual = var->xres;
+ var->yres_virtual = var->yres;
+
+ var->bits_per_pixel = winbpp(win->w[plane].mode_winctrl1);
+
+ screen_size = var->xres_virtual * var->yres_virtual;
+ if (var->bits_per_pixel > 8) screen_size *= (var->bits_per_pixel / 8);
+ else screen_size /= (8/var->bits_per_pixel);
+
+ if (fbdev->fb_len < screen_size)
+ return -EINVAL; /* Virtual screen is to big, abort */
+
+ /* FIX!!!! what are the implicaitons of ignoring this for windows ??? */
+ /* The max LCD clock is fixed to 48MHz (value of AUX_CLK). The pixel
+ * clock can only be obtain by dividing this value by an even integer.
+ * Fallback to a slower pixel clock if necessary. */
+ pixclock = max((u32)(PICOS2KHZ(var->pixclock) * 1000), fbi->monspecs.dclkmin);
+ pixclock = min(pixclock, min(fbi->monspecs.dclkmax, (u32)AU1200_LCD_MAX_CLK/2));
+
+ if (AU1200_LCD_MAX_CLK % pixclock) {
+ int diff = AU1200_LCD_MAX_CLK % pixclock;
+ pixclock -= diff;
+ }
+
+ var->pixclock = KHZ2PICOS(pixclock/1000);
+#if 0
+ if (!panel_is_active(panel)) {
+ int pcd = AU1200_LCD_MAX_CLK / (pixclock * 2) - 1;
+
+ if (!panel_is_color(panel)
+ && (panel->control_base & LCD_CONTROL_MPI) && (pcd < 3)) {
+ /* STN 8bit mono panel support is up to 6MHz pixclock */
+ var->pixclock = KHZ2PICOS(6000);
+ } else if (!pcd) {
+ /* Other STN panel support is up to 12MHz */
+ var->pixclock = KHZ2PICOS(12000);
+ }
+ }
+#endif
+ /* Set bitfield accordingly */
+ switch (var->bits_per_pixel) {
+ case 16:
+ {
+ /* 16bpp True color.
+ * These must be set to MATCH WINCTRL[FORM] */
+ int idx;
+ idx = (win->w[0].mode_winctrl1 & LCD_WINCTRL1_FRM) >> 25;
+ var->red = rgb_bitfields[idx][0];
+ var->green = rgb_bitfields[idx][1];
+ var->blue = rgb_bitfields[idx][2];
+ var->transp = rgb_bitfields[idx][3];
+ break;
+ }
+
+ case 32:
+ {
+ /* 32bpp True color.
+ * These must be set to MATCH WINCTRL[FORM] */
+ int idx;
+ idx = (win->w[0].mode_winctrl1 & LCD_WINCTRL1_FRM) >> 25;
+ var->red = rgb_bitfields[idx][0];
+ var->green = rgb_bitfields[idx][1];
+ var->blue = rgb_bitfields[idx][2];
+ var->transp = rgb_bitfields[idx][3];
+ break;
+ }
+ default:
+ print_dbg("Unsupported depth %dbpp", var->bits_per_pixel);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/* fb_set_par
+ * Set hardware with var settings. This will enable the controller with a
+ * specific mode, normally validated with the fb_check_var method
+ */
+static int au1200fb_fb_set_par(struct fb_info *fbi)
+{
+ struct au1200fb_device *fbdev = (struct au1200fb_device *)fbi;
+
+ au1200fb_update_fbinfo(fbi);
+ au1200_setmode(fbdev);
+
+ return 0;
+}
+
+/* fb_setcolreg
+ * Set color in LCD palette.
+ */
+static int au1200fb_fb_setcolreg(unsigned regno, unsigned red, unsigned green,
+ unsigned blue, unsigned transp, struct fb_info *fbi)
+{
+ volatile u32 *palette = lcd->palette;
+ u32 value;
+
+ if (regno > (AU1200_LCD_NBR_PALETTE_ENTRIES - 1))
+ return -EINVAL;
+
+ if (fbi->var.grayscale) {
+ /* Convert color to grayscale */
+ red = green = blue =
+ (19595 * red + 38470 * green + 7471 * blue) >> 16;
+ }
+
+ if (fbi->fix.visual == FB_VISUAL_TRUECOLOR) {
+ /* Place color in the pseudopalette */
+ if (regno > 16)
+ return -EINVAL;
+
+ palette = (u32*) fbi->pseudo_palette;
+
+ red >>= (16 - fbi->var.red.length);
+ green >>= (16 - fbi->var.green.length);
+ blue >>= (16 - fbi->var.blue.length);
+
+ value = (red << fbi->var.red.offset) |
+ (green << fbi->var.green.offset)|
+ (blue << fbi->var.blue.offset);
+ value &= 0xFFFF;
+
+ } else if (1 /*FIX!!! panel_is_active(fbdev->panel)*/) {
+ /* COLOR TFT PALLETTIZED (use RGB 565) */
+ value = (red & 0xF800)|((green >> 5) &
+ 0x07E0)|((blue >> 11) & 0x001F);
+ value &= 0xFFFF;
+
+ } else if (0 /*panel_is_color(fbdev->panel)*/) {
+ /* COLOR STN MODE */
+ value = 0x1234;
+ value &= 0xFFF;
+ } else {
+ /* MONOCHROME MODE */
+ value = (green >> 12) & 0x000F;
+ value &= 0xF;
+ }
+
+ palette[regno] = value;
+
+ return 0;
+}
+
+/* fb_blank
+ * Blank the screen. Depending on the mode, the screen will be
+ * activated with the backlight color, or desactivated
+ */
+static int au1200fb_fb_blank(int blank_mode, struct fb_info *fbi)
+{
+ /* Short-circuit screen blanking */
+ if (noblanking)
+ return 0;
+
+ switch (blank_mode) {
+
+ case FB_BLANK_UNBLANK:
+ case FB_BLANK_NORMAL:
+ /* printk("turn on panel\n"); */
+ au1200_setpanel(panel);
+ break;
+ case FB_BLANK_VSYNC_SUSPEND:
+ case FB_BLANK_HSYNC_SUSPEND:
+ case FB_BLANK_POWERDOWN:
+ /* printk("turn off panel\n"); */
+ au1200_setpanel(NULL);
+ break;
+ default:
+ break;
+
+ }
+
+ /* FB_BLANK_NORMAL is a soft blank */
+ return (blank_mode == FB_BLANK_NORMAL) ? -EINVAL : 0;
+}
+
+/* fb_mmap
+ * Map video memory in user space. We don't use the generic fb_mmap
+ * method mainly to allow the use of the TLB streaming flag (CCA=6)
+ */
+static int au1200fb_fb_mmap(struct fb_info *info, struct vm_area_struct *vma)
+
+{
+ unsigned int len;
+ unsigned long start=0, off;
+ struct au1200fb_device *fbdev = (struct au1200fb_device *) info;
+
+#ifdef CONFIG_PM
+ au1xxx_pm_access(LCD_pm_dev);
+#endif
+
+ if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT)) {
+ return -EINVAL;
+ }
+
+ start = fbdev->fb_phys & PAGE_MASK;
+ len = PAGE_ALIGN((start & ~PAGE_MASK) + fbdev->fb_len);
+
+ off = vma->vm_pgoff << PAGE_SHIFT;
+
+ if ((vma->vm_end - vma->vm_start + off) > len) {
+ return -EINVAL;
+ }
+
+ off += start;
+ vma->vm_pgoff = off >> PAGE_SHIFT;
+
+ vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+ pgprot_val(vma->vm_page_prot) |= _CACHE_MASK; /* CCA=7 */
+
+ vma->vm_flags |= VM_IO;
+
+ return io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT,
+ vma->vm_end - vma->vm_start,
+ vma->vm_page_prot);
+
+ return 0;
+}
+
+static void set_global(u_int cmd, struct au1200_lcd_global_regs_t *pdata)
+{
+
+ unsigned int hi1, divider;
+
+ /* SCREEN_SIZE: user cannot reset size, must switch panel choice */
+
+ if (pdata->flags & SCREEN_BACKCOLOR)
+ lcd->backcolor = pdata->backcolor;
+
+ if (pdata->flags & SCREEN_BRIGHTNESS) {
+
+ // limit brightness pwm duty to >= 30/1600
+ if (pdata->brightness < 30) {
+ pdata->brightness = 30;
+ }
+ divider = (lcd->pwmdiv & 0x3FFFF) + 1;
+ hi1 = (lcd->pwmhi >> 16) + 1;
+ hi1 = (((pdata->brightness & 0xFF)+1) * divider >> 8);
+ lcd->pwmhi &= 0xFFFF;
+ lcd->pwmhi |= (hi1 << 16);
+ }
+
+ if (pdata->flags & SCREEN_COLORKEY)
+ lcd->colorkey = pdata->colorkey;
+
+ if (pdata->flags & SCREEN_MASK)
+ lcd->colorkeymsk = pdata->mask;
+ au_sync();
+}
+
+static void get_global(u_int cmd, struct au1200_lcd_global_regs_t *pdata)
+{
+ unsigned int hi1, divider;
+
+ pdata->xsize = ((lcd->screen & LCD_SCREEN_SX) >> 19) + 1;
+ pdata->ysize = ((lcd->screen & LCD_SCREEN_SY) >> 8) + 1;
+
+ pdata->backcolor = lcd->backcolor;
+ pdata->colorkey = lcd->colorkey;
+ pdata->mask = lcd->colorkeymsk;
+
+ // brightness
+ hi1 = (lcd->pwmhi >> 16) + 1;
+ divider = (lcd->pwmdiv & 0x3FFFF) + 1;
+ pdata->brightness = ((hi1 << 8) / divider) - 1;
+ au_sync();
+}
+
+static void set_window(unsigned int plane,
+ struct au1200_lcd_window_regs_t *pdata)
+{
+ unsigned int val, bpp;
+
+ /* Window control register 0 */
+ if (pdata->flags & WIN_POSITION) {
+ val = lcd->window[plane].winctrl0 & ~(LCD_WINCTRL0_OX |
+ LCD_WINCTRL0_OY);
+ val |= ((pdata->xpos << 21) & LCD_WINCTRL0_OX);
+ val |= ((pdata->ypos << 10) & LCD_WINCTRL0_OY);
+ lcd->window[plane].winctrl0 = val;
+ }
+ if (pdata->flags & WIN_ALPHA_COLOR) {
+ val = lcd->window[plane].winctrl0 & ~(LCD_WINCTRL0_A);
+ val |= ((pdata->alpha_color << 2) & LCD_WINCTRL0_A);
+ lcd->window[plane].winctrl0 = val;
+ }
+ if (pdata->flags & WIN_ALPHA_MODE) {
+ val = lcd->window[plane].winctrl0 & ~(LCD_WINCTRL0_AEN);
+ val |= ((pdata->alpha_mode << 1) & LCD_WINCTRL0_AEN);
+ lcd->window[plane].winctrl0 = val;
+ }
+
+ /* Window control register 1 */
+ if (pdata->flags & WIN_PRIORITY) {
+ val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_PRI);
+ val |= ((pdata->priority << 30) & LCD_WINCTRL1_PRI);
+ lcd->window[plane].winctrl1 = val;
+ }
+ if (pdata->flags & WIN_CHANNEL) {
+ val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_PIPE);
+ val |= ((pdata->channel << 29) & LCD_WINCTRL1_PIPE);
+ lcd->window[plane].winctrl1 = val;
+ }
+ if (pdata->flags & WIN_BUFFER_FORMAT) {
+ val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_FRM);
+ val |= ((pdata->buffer_format << 25) & LCD_WINCTRL1_FRM);
+ lcd->window[plane].winctrl1 = val;
+ }
+ if (pdata->flags & WIN_COLOR_ORDER) {
+ val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_CCO);
+ val |= ((pdata->color_order << 24) & LCD_WINCTRL1_CCO);
+ lcd->window[plane].winctrl1 = val;
+ }
+ if (pdata->flags & WIN_PIXEL_ORDER) {
+ val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_PO);
+ val |= ((pdata->pixel_order << 22) & LCD_WINCTRL1_PO);
+ lcd->window[plane].winctrl1 = val;
+ }
+ if (pdata->flags & WIN_SIZE) {
+ val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_SZX |
+ LCD_WINCTRL1_SZY);
+ val |= (((pdata->xsize << 11) - 1) & LCD_WINCTRL1_SZX);
+ val |= (((pdata->ysize) - 1) & LCD_WINCTRL1_SZY);
+ lcd->window[plane].winctrl1 = val;
+ /* program buffer line width */
+ bpp = winbpp(val) / 8;
+ val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_BX);
+ val |= (((pdata->xsize * bpp) << 8) & LCD_WINCTRL2_BX);
+ lcd->window[plane].winctrl2 = val;
+ }
+
+ /* Window control register 2 */
+ if (pdata->flags & WIN_COLORKEY_MODE) {
+ val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_CKMODE);
+ val |= ((pdata->colorkey_mode << 24) & LCD_WINCTRL2_CKMODE);
+ lcd->window[plane].winctrl2 = val;
+ }
+ if (pdata->flags & WIN_DOUBLE_BUFFER_MODE) {
+ val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_DBM);
+ val |= ((pdata->double_buffer_mode << 23) & LCD_WINCTRL2_DBM);
+ lcd->window[plane].winctrl2 = val;
+ }
+ if (pdata->flags & WIN_RAM_ARRAY_MODE) {
+ val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_RAM);
+ val |= ((pdata->ram_array_mode << 21) & LCD_WINCTRL2_RAM);
+ lcd->window[plane].winctrl2 = val;
+ }
+
+ /* Buffer line width programmed with WIN_SIZE */
+
+ if (pdata->flags & WIN_BUFFER_SCALE) {
+ val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_SCX |
+ LCD_WINCTRL2_SCY);
+ val |= ((pdata->xsize << 11) & LCD_WINCTRL2_SCX);
+ val |= ((pdata->ysize) & LCD_WINCTRL2_SCY);
+ lcd->window[plane].winctrl2 = val;
+ }
+
+ if (pdata->flags & WIN_ENABLE) {
+ val = lcd->winenable;
+ val &= ~(1<<plane);
+ val |= (pdata->enable & 1) << plane;
+ lcd->winenable = val;
+ }
+ au_sync();
+}
+
+static void get_window(unsigned int plane,
+ struct au1200_lcd_window_regs_t *pdata)
+{
+ /* Window control register 0 */
+ pdata->xpos = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_OX) >> 21;
+ pdata->ypos = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_OY) >> 10;
+ pdata->alpha_color = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_A) >> 2;
+ pdata->alpha_mode = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_AEN) >> 1;
+
+ /* Window control register 1 */
+ pdata->priority = (lcd->window[plane].winctrl1& LCD_WINCTRL1_PRI) >> 30;
+ pdata->channel = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_PIPE) >> 29;
+ pdata->buffer_format = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_FRM) >> 25;
+ pdata->color_order = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_CCO) >> 24;
+ pdata->pixel_order = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_PO) >> 22;
+ pdata->xsize = ((lcd->window[plane].winctrl1 & LCD_WINCTRL1_SZX) >> 11) + 1;
+ pdata->ysize = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_SZY) + 1;
+
+ /* Window control register 2 */
+ pdata->colorkey_mode = (lcd->window[plane].winctrl2 & LCD_WINCTRL2_CKMODE) >> 24;
+ pdata->double_buffer_mode = (lcd->window[plane].winctrl2 & LCD_WINCTRL2_DBM) >> 23;
+ pdata->ram_array_mode = (lcd->window[plane].winctrl2 & LCD_WINCTRL2_RAM) >> 21;
+
+ pdata->enable = (lcd->winenable >> plane) & 1;
+ au_sync();
+}
+
+static int au1200fb_ioctl(struct fb_info *info, unsigned int cmd,
+ unsigned long arg)
+{
+ int plane;
+ int val;
+
+#ifdef CONFIG_PM
+ au1xxx_pm_access(LCD_pm_dev);
+#endif
+
+ plane = fbinfo2index(info);
+ print_dbg("au1200fb: ioctl %d on plane %d\n", cmd, plane);
+
+ if (cmd == AU1200_LCD_FB_IOCTL) {
+ struct au1200_lcd_iodata_t iodata;
+
+ if (copy_from_user(&iodata, (void __user *) arg, sizeof(iodata)))
+ return -EFAULT;
+
+ print_dbg("FB IOCTL called\n");
+
+ switch (iodata.subcmd) {
+ case AU1200_LCD_SET_SCREEN:
+ print_dbg("AU1200_LCD_SET_SCREEN\n");
+ set_global(cmd, &iodata.global);
+ break;
+
+ case AU1200_LCD_GET_SCREEN:
+ print_dbg("AU1200_LCD_GET_SCREEN\n");
+ get_global(cmd, &iodata.global);
+ break;
+
+ case AU1200_LCD_SET_WINDOW:
+ print_dbg("AU1200_LCD_SET_WINDOW\n");
+ set_window(plane, &iodata.window);
+ break;
+
+ case AU1200_LCD_GET_WINDOW:
+ print_dbg("AU1200_LCD_GET_WINDOW\n");
+ get_window(plane, &iodata.window);
+ break;
+
+ case AU1200_LCD_SET_PANEL:
+ print_dbg("AU1200_LCD_SET_PANEL\n");
+ if ((iodata.global.panel_choice >= 0) &&
+ (iodata.global.panel_choice <
+ NUM_PANELS))
+ {
+ struct panel_settings *newpanel;
+ panel_index = iodata.global.panel_choice;
+ newpanel = &known_lcd_panels[panel_index];
+ au1200_setpanel(newpanel);
+ }
+ break;
+
+ case AU1200_LCD_GET_PANEL:
+ print_dbg("AU1200_LCD_GET_PANEL\n");
+ iodata.global.panel_choice = panel_index;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ val = copy_to_user((void __user *) arg, &iodata, sizeof(iodata));
+ if (val) {
+ print_dbg("error: could not copy %d bytes\n", val);
+ return -EFAULT;
+ }
+ }
+
+ return 0;
+}
+
+
+static struct fb_ops au1200fb_fb_ops = {
+ .owner = THIS_MODULE,
+ .fb_check_var = au1200fb_fb_check_var,
+ .fb_set_par = au1200fb_fb_set_par,
+ .fb_setcolreg = au1200fb_fb_setcolreg,
+ .fb_blank = au1200fb_fb_blank,
+ .fb_fillrect = cfb_fillrect,
+ .fb_copyarea = cfb_copyarea,
+ .fb_imageblit = cfb_imageblit,
+ .fb_sync = NULL,
+ .fb_ioctl = au1200fb_ioctl,
+ .fb_mmap = au1200fb_fb_mmap,
+};
+
+/*-------------------------------------------------------------------------*/
+
+static irqreturn_t au1200fb_handle_irq(int irq, void* dev_id, struct pt_regs *regs)
+{
+ /* Nothing to do for now, just clear any pending interrupt */
+ lcd->intstatus = lcd->intstatus;
+ au_sync();
+
+ return IRQ_HANDLED;
+}
+
+/*-------------------------------------------------------------------------*/
+
+/* AU1200 LCD device probe helpers */
+
+static int au1200fb_init_fbinfo(struct au1200fb_device *fbdev)
+{
+ struct fb_info *fbi = &fbdev->fb_info;
+ int bpp;
+
+ memset(fbi, 0, sizeof(struct fb_info));
+ fbi->fbops = &au1200fb_fb_ops;
+
+ bpp = winbpp(win->w[fbdev->plane].mode_winctrl1);
+
+ /* Copy monitor specs from panel data */
+ /* fixme: we're setting up LCD controller windows, so these dont give a
+ damn as to what the monitor specs are (the panel itself does, but that
+ isnt done here...so maybe need a generic catchall monitor setting??? */
+ memcpy(&fbi->monspecs, &panel->monspecs, sizeof(struct fb_monspecs));
+
+ /* We first try the user mode passed in argument. If that failed,
+ * or if no one has been specified, we default to the first mode of the
+ * panel list. Note that after this call, var data will be set */
+ if (!fb_find_mode(&fbi->var,
+ fbi,
+ NULL, /* drv_info.opt_mode, */
+ fbi->monspecs.modedb,
+ fbi->monspecs.modedb_len,
+ fbi->monspecs.modedb,
+ bpp)) {
+
+ print_err("Cannot find valid mode for panel %s", panel->name);
+ return -EFAULT;
+ }
+
+ fbi->pseudo_palette = kmalloc(sizeof(u32) * 16, GFP_KERNEL);
+ if (!fbi->pseudo_palette) {
+ return -ENOMEM;
+ }
+ memset(fbi->pseudo_palette, 0, sizeof(u32) * 16);
+
+ if (fb_alloc_cmap(&fbi->cmap, AU1200_LCD_NBR_PALETTE_ENTRIES, 0) < 0) {
+ print_err("Fail to allocate colormap (%d entries)",
+ AU1200_LCD_NBR_PALETTE_ENTRIES);
+ kfree(fbi->pseudo_palette);
+ return -EFAULT;
+ }
+
+ strncpy(fbi->fix.id, "AU1200", sizeof(fbi->fix.id));
+ fbi->fix.smem_start = fbdev->fb_phys;
+ fbi->fix.smem_len = fbdev->fb_len;
+ fbi->fix.type = FB_TYPE_PACKED_PIXELS;
+ fbi->fix.xpanstep = 0;
+ fbi->fix.ypanstep = 0;
+ fbi->fix.mmio_start = 0;
+ fbi->fix.mmio_len = 0;
+ fbi->fix.accel = FB_ACCEL_NONE;
+
+ fbi->screen_base = (char __iomem *) fbdev->fb_mem;
+
+ au1200fb_update_fbinfo(fbi);
+
+ return 0;
+}
+
+/*-------------------------------------------------------------------------*/
+
+/* AU1200 LCD controller device driver */
+
+static int au1200fb_drv_probe(struct device *dev)
+{
+ struct au1200fb_device *fbdev;
+ unsigned long page;
+ int bpp, plane, ret;
+
+ if (!dev)
+ return -EINVAL;
+
+ for (plane = 0; plane < CONFIG_FB_AU1200_DEVS; ++plane) {
+ bpp = winbpp(win->w[plane].mode_winctrl1);
+ if (win->w[plane].xres == 0)
+ win->w[plane].xres = panel->Xres;
+ if (win->w[plane].yres == 0)
+ win->w[plane].yres = panel->Yres;
+
+ fbdev = &_au1200fb_devices[plane];
+ memset(fbdev, 0, sizeof(struct au1200fb_device));
+ fbdev->plane = plane;
+
+ /* Allocate the framebuffer to the maximum screen size */
+ fbdev->fb_len = (win->w[plane].xres * win->w[plane].yres * bpp) / 8;
+
+ fbdev->fb_mem = dma_alloc_noncoherent(dev,
+ PAGE_ALIGN(fbdev->fb_len),
+ &fbdev->fb_phys, GFP_KERNEL);
+ if (!fbdev->fb_mem) {
+ print_err("fail to allocate frambuffer (size: %dK))",
+ fbdev->fb_len / 1024);
+ return -ENOMEM;
+ }
+
+ /*
+ * Set page reserved so that mmap will work. This is necessary
+ * since we'll be remapping normal memory.
+ */
+ for (page = (unsigned long)fbdev->fb_phys;
+ page < PAGE_ALIGN((unsigned long)fbdev->fb_phys +
+ fbdev->fb_len);
+ page += PAGE_SIZE) {
+ SetPageReserved(pfn_to_page(page >> PAGE_SHIFT)); /* LCD DMA is NOT coherent on Au1200 */
+ }
+ print_dbg("Framebuffer memory map at %p", fbdev->fb_mem);
+ print_dbg("phys=0x%08x, size=%dK", fbdev->fb_phys, fbdev->fb_len / 1024);
+
+ /* Init FB data */
+ if ((ret = au1200fb_init_fbinfo(fbdev)) < 0)
+ goto failed;
+
+ /* Register new framebuffer */
+ if ((ret = register_framebuffer(&fbdev->fb_info)) < 0) {
+ print_err("cannot register new framebuffer");
+ goto failed;
+ }
+
+ au1200fb_fb_set_par(&fbdev->fb_info);
+
+#if !defined(CONFIG_FRAMEBUFFER_CONSOLE) && defined(CONFIG_LOGO)
+ if (plane == 0)
+ if (fb_prepare_logo(&fbdev->fb_info, FB_ROTATE_UR)) {
+ /* Start display and show logo on boot */
+ fb_set_cmap(&fbdev->fb_info.cmap,
+ &fbdev->fb_info);
+
+ fb_show_logo(&fbdev->fb_info, FB_ROTATE_UR);
+ }
+#endif
+ }
+
+ /* Now hook interrupt too */
+ if ((ret = request_irq(AU1200_LCD_INT, au1200fb_handle_irq,
+ SA_INTERRUPT | SA_SHIRQ, "lcd", (void *)dev)) < 0) {
+ print_err("fail to request interrupt line %d (err: %d)",
+ AU1200_LCD_INT, ret);
+ goto failed;
+ }
+
+ return 0;
+
+failed:
+ /* NOTE: This only does the current plane/window that failed; others are still active */
+ if (fbdev->fb_mem)
+ dma_free_noncoherent(dev, PAGE_ALIGN(fbdev->fb_len),
+ fbdev->fb_mem, fbdev->fb_phys);
+ if (fbdev->fb_info.cmap.len != 0)
+ fb_dealloc_cmap(&fbdev->fb_info.cmap);
+ if (fbdev->fb_info.pseudo_palette)
+ kfree(fbdev->fb_info.pseudo_palette);
+ if (plane == 0)
+ free_irq(AU1200_LCD_INT, (void*)dev);
+ return ret;
+}
+
+static int au1200fb_drv_remove(struct device *dev)
+{
+ struct au1200fb_device *fbdev;
+ int plane;
+
+ if (!dev)
+ return -ENODEV;
+
+ /* Turn off the panel */
+ au1200_setpanel(NULL);
+
+ for (plane = 0; plane < CONFIG_FB_AU1200_DEVS; ++plane)
+ {
+ fbdev = &_au1200fb_devices[plane];
+
+ /* Clean up all probe data */
+ unregister_framebuffer(&fbdev->fb_info);
+ if (fbdev->fb_mem)
+ dma_free_noncoherent(dev, PAGE_ALIGN(fbdev->fb_len),
+ fbdev->fb_mem, fbdev->fb_phys);
+ if (fbdev->fb_info.cmap.len != 0)
+ fb_dealloc_cmap(&fbdev->fb_info.cmap);
+ if (fbdev->fb_info.pseudo_palette)
+ kfree(fbdev->fb_info.pseudo_palette);
+ }
+
+ free_irq(AU1200_LCD_INT, (void *)dev);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int au1200fb_drv_suspend(struct device *dev, u32 state, u32 level)
+{
+ /* TODO */
+ return 0;
+}
+
+static int au1200fb_drv_resume(struct device *dev, u32 level)
+{
+ /* TODO */
+ return 0;
+}
+#endif /* CONFIG_PM */
+
+static struct device_driver au1200fb_driver = {
+ .name = "au1200-lcd",
+ .bus = &platform_bus_type,
+ .probe = au1200fb_drv_probe,
+ .remove = au1200fb_drv_remove,
+#ifdef CONFIG_PM
+ .suspend = au1200fb_drv_suspend,
+ .resume = au1200fb_drv_resume,
+#endif
+};
+
+/*-------------------------------------------------------------------------*/
+
+/* Kernel driver */
+
+static void au1200fb_setup(void)
+{
+ char* options = NULL;
+ char* this_opt;
+ int num_panels = ARRAY_SIZE(known_lcd_panels);
+ int panel_idx = -1;
+
+ fb_get_options(DRIVER_NAME, &options);
+
+ if (options) {
+ while ((this_opt = strsep(&options,",")) != NULL) {
+ /* Panel option - can be panel name,
+ * "bs" for board-switch, or number/index */
+ if (!strncmp(this_opt, "panel:", 6)) {
+ int i;
+ long int li;
+ char *endptr;
+ this_opt += 6;
+ /* First check for index, which allows
+ * to short circuit this mess */
+ li = simple_strtol(this_opt, &endptr, 0);
+ if (*endptr == '\0') {
+ panel_idx = (int)li;
+ }
+ else if (strcmp(this_opt, "bs") == 0) {
+ extern int board_au1200fb_panel(void);
+ panel_idx = board_au1200fb_panel();
+ }
+
+ else
+ for (i = 0; i < num_panels; i++) {
+ if (!strcmp(this_opt, known_lcd_panels[i].name)) {
+ panel_idx = i;
+ break;
+ }
+ }
+
+ if ((panel_idx < 0) || (panel_idx >= num_panels)) {
+ print_warn("Panel %s not supported!", this_opt);
+ }
+ else
+ panel_index = panel_idx;
+ }
+
+ else if (strncmp(this_opt, "nohwcursor", 10) == 0) {
+ nohwcursor = 1;
+ }
+
+ /* Unsupported option */
+ else {
+ print_warn("Unsupported option \"%s\"", this_opt);
+ }
+ }
+ }
+}
+
+#ifdef CONFIG_PM
+static int au1200fb_pm_callback(au1xxx_power_dev_t *dev,
+ au1xxx_request_t request, void *data) {
+ int retval = -1;
+ unsigned int d = 0;
+ unsigned int brightness = 0;
+
+ if (request == AU1XXX_PM_SLEEP) {
+ board_au1200fb_panel_shutdown();
+ }
+ else if (request == AU1XXX_PM_WAKEUP) {
+ if(dev->prev_state == SLEEP_STATE)
+ {
+ int plane;
+ au1200_setpanel(panel);
+ for (plane = 0; plane < CONFIG_FB_AU1200_DEVS; ++plane) {
+ struct au1200fb_device *fbdev;
+ fbdev = &_au1200fb_devices[plane];
+ au1200fb_fb_set_par(&fbdev->fb_info);
+ }
+ }
+
+ d = *((unsigned int*)data);
+ if(d <=10) brightness = 26;
+ else if(d<=20) brightness = 51;
+ else if(d<=30) brightness = 77;
+ else if(d<=40) brightness = 102;
+ else if(d<=50) brightness = 128;
+ else if(d<=60) brightness = 153;
+ else if(d<=70) brightness = 179;
+ else if(d<=80) brightness = 204;
+ else if(d<=90) brightness = 230;
+ else brightness = 255;
+ set_brightness(brightness);
+ } else if (request == AU1XXX_PM_GETSTATUS) {
+ return dev->cur_state;
+ } else if (request == AU1XXX_PM_ACCESS) {
+ if (dev->cur_state != SLEEP_STATE)
+ return retval;
+ else {
+ au1200_setpanel(panel);
+ }
+ } else if (request == AU1XXX_PM_IDLE) {
+ } else if (request == AU1XXX_PM_CLEANUP) {
+ }
+
+ return retval;
+}
+#endif
+
+static int __init au1200fb_init(void)
+{
+ print_info("" DRIVER_DESC "");
+
+ /* Setup driver with options */
+ au1200fb_setup();
+
+ /* Point to the panel selected */
+ panel = &known_lcd_panels[panel_index];
+ win = &windows[window_index];
+
+ printk(DRIVER_NAME ": Panel %d %s\n", panel_index, panel->name);
+ printk(DRIVER_NAME ": Win %d %s\n", window_index, win->name);
+
+ /* Kickstart the panel, the framebuffers/windows come soon enough */
+ au1200_setpanel(panel);
+
+ #ifdef CONFIG_PM
+ LCD_pm_dev = new_au1xxx_power_device("LCD", &au1200fb_pm_callback, NULL);
+ if ( LCD_pm_dev == NULL)
+ printk(KERN_INFO "Unable to create a power management device entry for the au1200fb.\n");
+ else
+ printk(KERN_INFO "Power management device entry for the au1200fb loaded.\n");
+ #endif
+
+ return driver_register(&au1200fb_driver);
+}
+
+static void __exit au1200fb_cleanup(void)
+{
+ driver_unregister(&au1200fb_driver);
+}
+
+module_init(au1200fb_init);
+module_exit(au1200fb_cleanup);
+
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
+/*
+ * BRIEF MODULE DESCRIPTION
+ * Au1200 LCD Driver.
+ *
+ * Copyright 2004-2005 AMD
+ * Author: AMD
+ *
+ * Based on:
+ * linux/drivers/video/skeletonfb.c -- Skeleton for a frame buffer device
+ * Created 28 Dec 1997 by Geert Uytterhoeven
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/fb.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/ctype.h>
+#include <linux/dma-mapping.h>
+
+#include <asm/mach-au1x00/au1000.h>
+#include "au1200fb.h"
+
+#ifdef CONFIG_PM
+#include <asm/mach-au1x00/au1xxx_pm.h>
+#endif
+
+#ifndef CONFIG_FB_AU1200_DEVS
+#define CONFIG_FB_AU1200_DEVS 4
+#endif
+
+#define DRIVER_NAME "au1200fb"
+#define DRIVER_DESC "LCD controller driver for AU1200 processors"
+
+#define DEBUG 1
+
+#define print_err(f, arg...) printk(KERN_ERR DRIVER_NAME ": " f "\n", ## arg)
+#define print_warn(f, arg...) printk(KERN_WARNING DRIVER_NAME ": " f "\n", ## arg)
+#define print_info(f, arg...) printk(KERN_INFO DRIVER_NAME ": " f "\n", ## arg)
+
+#if DEBUG
+#define print_dbg(f, arg...) printk(KERN_DEBUG __FILE__ ": " f "\n", ## arg)
+#else
+#define print_dbg(f, arg...) do {} while (0)
+#endif
+
+
+#define AU1200_LCD_FB_IOCTL 0x46FF
+
+#define AU1200_LCD_SET_SCREEN 1
+#define AU1200_LCD_GET_SCREEN 2
+#define AU1200_LCD_SET_WINDOW 3
+#define AU1200_LCD_GET_WINDOW 4
+#define AU1200_LCD_SET_PANEL 5
+#define AU1200_LCD_GET_PANEL 6
+
+#define SCREEN_SIZE (1<< 1)
+#define SCREEN_BACKCOLOR (1<< 2)
+#define SCREEN_BRIGHTNESS (1<< 3)
+#define SCREEN_COLORKEY (1<< 4)
+#define SCREEN_MASK (1<< 5)
+
+struct au1200_lcd_global_regs_t {
+ unsigned int flags;
+ unsigned int xsize;
+ unsigned int ysize;
+ unsigned int backcolor;
+ unsigned int brightness;
+ unsigned int colorkey;
+ unsigned int mask;
+ unsigned int panel_choice;
+ char panel_desc[80];
+
+};
+
+#define WIN_POSITION (1<< 0)
+#define WIN_ALPHA_COLOR (1<< 1)
+#define WIN_ALPHA_MODE (1<< 2)
+#define WIN_PRIORITY (1<< 3)
+#define WIN_CHANNEL (1<< 4)
+#define WIN_BUFFER_FORMAT (1<< 5)
+#define WIN_COLOR_ORDER (1<< 6)
+#define WIN_PIXEL_ORDER (1<< 7)
+#define WIN_SIZE (1<< 8)
+#define WIN_COLORKEY_MODE (1<< 9)
+#define WIN_DOUBLE_BUFFER_MODE (1<< 10)
+#define WIN_RAM_ARRAY_MODE (1<< 11)
+#define WIN_BUFFER_SCALE (1<< 12)
+#define WIN_ENABLE (1<< 13)
+
+struct au1200_lcd_window_regs_t {
+ unsigned int flags;
+ unsigned int xpos;
+ unsigned int ypos;
+ unsigned int alpha_color;
+ unsigned int alpha_mode;
+ unsigned int priority;
+ unsigned int channel;
+ unsigned int buffer_format;
+ unsigned int color_order;
+ unsigned int pixel_order;
+ unsigned int xsize;
+ unsigned int ysize;
+ unsigned int colorkey_mode;
+ unsigned int double_buffer_mode;
+ unsigned int ram_array_mode;
+ unsigned int xscale;
+ unsigned int yscale;
+ unsigned int enable;
+};
+
+
+struct au1200_lcd_iodata_t {
+ unsigned int subcmd;
+ struct au1200_lcd_global_regs_t global;
+ struct au1200_lcd_window_regs_t window;
+};
+
+#if defined(__BIG_ENDIAN)
+#define LCD_CONTROL_DEFAULT_PO LCD_CONTROL_PO_11
+#else
+#define LCD_CONTROL_DEFAULT_PO LCD_CONTROL_PO_00
+#endif
+#define LCD_CONTROL_DEFAULT_SBPPF LCD_CONTROL_SBPPF_565
+
+/* Private, per-framebuffer management information (independent of the panel itself) */
+struct au1200fb_device {
+ struct fb_info fb_info; /* FB driver info record */
+
+ int plane;
+ unsigned char* fb_mem; /* FrameBuffer memory map */
+ unsigned int fb_len;
+ dma_addr_t fb_phys;
+};
+
+static struct au1200fb_device _au1200fb_devices[CONFIG_FB_AU1200_DEVS];
+/********************************************************************/
+
+/* LCD controller restrictions */
+#define AU1200_LCD_MAX_XRES 1280
+#define AU1200_LCD_MAX_YRES 1024
+#define AU1200_LCD_MAX_BPP 32
+#define AU1200_LCD_MAX_CLK 96000000 /* fixme: this needs to go away ? */
+#define AU1200_LCD_NBR_PALETTE_ENTRIES 256
+
+/* Default number of visible screen buffer to allocate */
+#define AU1200FB_NBR_VIDEO_BUFFERS 1
+
+/********************************************************************/
+
+static struct au1200_lcd *lcd = (struct au1200_lcd *) AU1200_LCD_ADDR;
+static int window_index = 2; /* default is zero */
+static int panel_index = 2; /* default is zero */
+static struct window_settings *win;
+static struct panel_settings *panel;
+static int noblanking = 1;
+static int nohwcursor = 0;
+
+struct window_settings {
+ unsigned char name[64];
+ uint32 mode_backcolor;
+ uint32 mode_colorkey;
+ uint32 mode_colorkeymsk;
+ struct {
+ int xres;
+ int yres;
+ int xpos;
+ int ypos;
+ uint32 mode_winctrl1; /* winctrl1[FRM,CCO,PO,PIPE] */
+ uint32 mode_winenable;
+ } w[4];
+};
+
+#if defined(__BIG_ENDIAN)
+#define LCD_WINCTRL1_PO_16BPP LCD_WINCTRL1_PO_00
+#else
+#define LCD_WINCTRL1_PO_16BPP LCD_WINCTRL1_PO_01
+#endif
+
+extern int board_au1200fb_panel_init (void);
+extern int board_au1200fb_panel_shutdown (void);
+
+#ifdef CONFIG_PM
+int au1200fb_pm_callback(au1xxx_power_dev_t *dev,
+ au1xxx_request_t request, void *data);
+au1xxx_power_dev_t *LCD_pm_dev;
+#endif
+
+/*
+ * Default window configurations
+ */
+static struct window_settings windows[] = {
+ { /* Index 0 */
+ "0-FS gfx, 1-video, 2-ovly gfx, 3-ovly gfx",
+ /* mode_backcolor */ 0x006600ff,
+ /* mode_colorkey,msk*/ 0, 0,
+ {
+ {
+ /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
+ /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
+ LCD_WINCTRL1_PO_16BPP,
+ /* mode_winenable*/ LCD_WINENABLE_WEN0,
+ },
+ {
+ /* xres, yres, xpos, ypos */ 100, 100, 100, 100,
+ /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
+ LCD_WINCTRL1_PO_16BPP |
+ LCD_WINCTRL1_PIPE,
+ /* mode_winenable*/ LCD_WINENABLE_WEN1,
+ },
+ {
+ /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
+ /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
+ LCD_WINCTRL1_PO_16BPP,
+ /* mode_winenable*/ 0,
+ },
+ {
+ /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
+ /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
+ LCD_WINCTRL1_PO_16BPP |
+ LCD_WINCTRL1_PIPE,
+ /* mode_winenable*/ 0,
+ },
+ },
+ },
+
+ { /* Index 1 */
+ "0-FS gfx, 1-video, 2-ovly gfx, 3-ovly gfx",
+ /* mode_backcolor */ 0x006600ff,
+ /* mode_colorkey,msk*/ 0, 0,
+ {
+ {
+ /* xres, yres, xpos, ypos */ 320, 240, 5, 5,
+ /* mode_winctrl1 */ LCD_WINCTRL1_FRM_24BPP |
+ LCD_WINCTRL1_PO_00,
+ /* mode_winenable*/ LCD_WINENABLE_WEN0,
+ },
+ {
+ /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
+ /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565
+ | LCD_WINCTRL1_PO_16BPP,
+ /* mode_winenable*/ 0,
+ },
+ {
+ /* xres, yres, xpos, ypos */ 100, 100, 0, 0,
+ /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
+ LCD_WINCTRL1_PO_16BPP |
+ LCD_WINCTRL1_PIPE,
+ /* mode_winenable*/ 0/*LCD_WINENABLE_WEN2*/,
+ },
+ {
+ /* xres, yres, xpos, ypos */ 200, 25, 0, 0,
+ /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
+ LCD_WINCTRL1_PO_16BPP |
+ LCD_WINCTRL1_PIPE,
+ /* mode_winenable*/ 0,
+ },
+ },
+ },
+ { /* Index 2 */
+ "0-FS gfx, 1-video, 2-ovly gfx, 3-ovly gfx",
+ /* mode_backcolor */ 0x006600ff,
+ /* mode_colorkey,msk*/ 0, 0,
+ {
+ {
+ /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
+ /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
+ LCD_WINCTRL1_PO_16BPP,
+ /* mode_winenable*/ LCD_WINENABLE_WEN0,
+ },
+ {
+ /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
+ /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
+ LCD_WINCTRL1_PO_16BPP,
+ /* mode_winenable*/ 0,
+ },
+ {
+ /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
+ /* mode_winctrl1 */ LCD_WINCTRL1_FRM_32BPP |
+ LCD_WINCTRL1_PO_00|LCD_WINCTRL1_PIPE,
+ /* mode_winenable*/ 0/*LCD_WINENABLE_WEN2*/,
+ },
+ {
+ /* xres, yres, xpos, ypos */ 0, 0, 0, 0,
+ /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
+ LCD_WINCTRL1_PO_16BPP |
+ LCD_WINCTRL1_PIPE,
+ /* mode_winenable*/ 0,
+ },
+ },
+ },
+ /* Need VGA 640 @ 24bpp, @ 32bpp */
+ /* Need VGA 800 @ 24bpp, @ 32bpp */
+ /* Need VGA 1024 @ 24bpp, @ 32bpp */
+};
+
+/*
+ * Controller configurations for various panels.
+ */
+
+struct panel_settings
+{
+ const char name[25]; /* Full name <vendor>_<model> */
+
+ struct fb_monspecs monspecs; /* FB monitor specs */
+
+ /* panel timings */
+ uint32 mode_screen;
+ uint32 mode_horztiming;
+ uint32 mode_verttiming;
+ uint32 mode_clkcontrol;
+ uint32 mode_pwmdiv;
+ uint32 mode_pwmhi;
+ uint32 mode_outmask;
+ uint32 mode_fifoctrl;
+ uint32 mode_toyclksrc;
+ uint32 mode_backlight;
+ uint32 mode_auxpll;
+ int (*device_init)(void);
+ int (*device_shutdown)(void);
+#define Xres min_xres
+#define Yres min_yres
+ u32 min_xres; /* Minimum horizontal resolution */
+ u32 max_xres; /* Maximum horizontal resolution */
+ u32 min_yres; /* Minimum vertical resolution */
+ u32 max_yres; /* Maximum vertical resolution */
+};
+
+/********************************************************************/
+/* fixme: Maybe a modedb for the CRT ? otherwise panels should be as-is */
+
+/* List of panels known to work with the AU1200 LCD controller.
+ * To add a new panel, enter the same specifications as the
+ * Generic_TFT one, and MAKE SURE that it doesn't conflicts
+ * with the controller restrictions. Restrictions are:
+ *
+ * STN color panels: max_bpp <= 12
+ * STN mono panels: max_bpp <= 4
+ * TFT panels: max_bpp <= 16
+ * max_xres <= 800
+ * max_yres <= 600
+ */
+static struct panel_settings known_lcd_panels[] =
+{
+ [0] = { /* QVGA 320x240 H:33.3kHz V:110Hz */
+ .name = "QVGA_320x240",
+ .monspecs = {
+ .modedb = NULL,
+ .modedb_len = 0,
+ .hfmin = 30000,
+ .hfmax = 70000,
+ .vfmin = 60,
+ .vfmax = 60,
+ .dclkmin = 6000000,
+ .dclkmax = 28000000,
+ .input = FB_DISP_RGB,
+ },
+ .mode_screen = LCD_SCREEN_SX_N(320) |
+ LCD_SCREEN_SY_N(240),
+ .mode_horztiming = 0x00c4623b,
+ .mode_verttiming = 0x00502814,
+ .mode_clkcontrol = 0x00020002, /* /4=24Mhz */
+ .mode_pwmdiv = 0x00000000,
+ .mode_pwmhi = 0x00000000,
+ .mode_outmask = 0x00FFFFFF,
+ .mode_fifoctrl = 0x2f2f2f2f,
+ .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
+ .mode_backlight = 0x00000000,
+ .mode_auxpll = 8, /* 96MHz AUXPLL */
+ .device_init = NULL,
+ .device_shutdown = NULL,
+ 320, 320,
+ 240, 240,
+ },
+
+ [1] = { /* VGA 640x480 H:30.3kHz V:58Hz */
+ .name = "VGA_640x480",
+ .monspecs = {
+ .modedb = NULL,
+ .modedb_len = 0,
+ .hfmin = 30000,
+ .hfmax = 70000,
+ .vfmin = 60,
+ .vfmax = 60,
+ .dclkmin = 6000000,
+ .dclkmax = 28000000,
+ .input = FB_DISP_RGB,
+ },
+ .mode_screen = 0x13f9df80,
+ .mode_horztiming = 0x003c5859,
+ .mode_verttiming = 0x00741201,
+ .mode_clkcontrol = 0x00020001, /* /4=24Mhz */
+ .mode_pwmdiv = 0x00000000,
+ .mode_pwmhi = 0x00000000,
+ .mode_outmask = 0x00FFFFFF,
+ .mode_fifoctrl = 0x2f2f2f2f,
+ .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
+ .mode_backlight = 0x00000000,
+ .mode_auxpll = 8, /* 96MHz AUXPLL */
+ .device_init = NULL,
+ .device_shutdown = NULL,
+ 640, 480,
+ 640, 480,
+ },
+
+ [2] = { /* SVGA 800x600 H:46.1kHz V:69Hz */
+ .name = "SVGA_800x600",
+ .monspecs = {
+ .modedb = NULL,
+ .modedb_len = 0,
+ .hfmin = 30000,
+ .hfmax = 70000,
+ .vfmin = 60,
+ .vfmax = 60,
+ .dclkmin = 6000000,
+ .dclkmax = 28000000,
+ .input = FB_DISP_RGB,
+ },
+ .mode_screen = 0x18fa5780,
+ .mode_horztiming = 0x00dc7e77,
+ .mode_verttiming = 0x00584805,
+ .mode_clkcontrol = 0x00020000, /* /2=48Mhz */
+ .mode_pwmdiv = 0x00000000,
+ .mode_pwmhi = 0x00000000,
+ .mode_outmask = 0x00FFFFFF,
+ .mode_fifoctrl = 0x2f2f2f2f,
+ .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
+ .mode_backlight = 0x00000000,
+ .mode_auxpll = 8, /* 96MHz AUXPLL */
+ .device_init = NULL,
+ .device_shutdown = NULL,
+ 800, 800,
+ 600, 600,
+ },
+
+ [3] = { /* XVGA 1024x768 H:56.2kHz V:70Hz */
+ .name = "XVGA_1024x768",
+ .monspecs = {
+ .modedb = NULL,
+ .modedb_len = 0,
+ .hfmin = 30000,
+ .hfmax = 70000,
+ .vfmin = 60,
+ .vfmax = 60,
+ .dclkmin = 6000000,
+ .dclkmax = 28000000,
+ .input = FB_DISP_RGB,
+ },
+ .mode_screen = 0x1ffaff80,
+ .mode_horztiming = 0x007d0e57,
+ .mode_verttiming = 0x00740a01,
+ .mode_clkcontrol = 0x000A0000, /* /1 */
+ .mode_pwmdiv = 0x00000000,
+ .mode_pwmhi = 0x00000000,
+ .mode_outmask = 0x00FFFFFF,
+ .mode_fifoctrl = 0x2f2f2f2f,
+ .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
+ .mode_backlight = 0x00000000,
+ .mode_auxpll = 6, /* 72MHz AUXPLL */
+ .device_init = NULL,
+ .device_shutdown = NULL,
+ 1024, 1024,
+ 768, 768,
+ },
+
+ [4] = { /* XVGA XVGA 1280x1024 H:68.5kHz V:65Hz */
+ .name = "XVGA_1280x1024",
+ .monspecs = {
+ .modedb = NULL,
+ .modedb_len = 0,
+ .hfmin = 30000,
+ .hfmax = 70000,
+ .vfmin = 60,
+ .vfmax = 60,
+ .dclkmin = 6000000,
+ .dclkmax = 28000000,
+ .input = FB_DISP_RGB,
+ },
+ .mode_screen = 0x27fbff80,
+ .mode_horztiming = 0x00cdb2c7,
+ .mode_verttiming = 0x00600002,
+ .mode_clkcontrol = 0x000A0000, /* /1 */
+ .mode_pwmdiv = 0x00000000,
+ .mode_pwmhi = 0x00000000,
+ .mode_outmask = 0x00FFFFFF,
+ .mode_fifoctrl = 0x2f2f2f2f,
+ .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
+ .mode_backlight = 0x00000000,
+ .mode_auxpll = 10, /* 120MHz AUXPLL */
+ .device_init = NULL,
+ .device_shutdown = NULL,
+ 1280, 1280,
+ 1024, 1024,
+ },
+
+ [5] = { /* Samsung 1024x768 TFT */
+ .name = "Samsung_1024x768_TFT",
+ .monspecs = {
+ .modedb = NULL,
+ .modedb_len = 0,
+ .hfmin = 30000,
+ .hfmax = 70000,
+ .vfmin = 60,
+ .vfmax = 60,
+ .dclkmin = 6000000,
+ .dclkmax = 28000000,
+ .input = FB_DISP_RGB,
+ },
+ .mode_screen = 0x1ffaff80,
+ .mode_horztiming = 0x018cc677,
+ .mode_verttiming = 0x00241217,
+ .mode_clkcontrol = 0x00000000, /* SCB 0x1 /4=24Mhz */
+ .mode_pwmdiv = 0x8000063f, /* SCB 0x0 */
+ .mode_pwmhi = 0x03400000, /* SCB 0x0 */
+ .mode_outmask = 0x00FFFFFF,
+ .mode_fifoctrl = 0x2f2f2f2f,
+ .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
+ .mode_backlight = 0x00000000,
+ .mode_auxpll = 8, /* 96MHz AUXPLL */
+ .device_init = board_au1200fb_panel_init,
+ .device_shutdown = board_au1200fb_panel_shutdown,
+ 1024, 1024,
+ 768, 768,
+ },
+
+ [6] = { /* Toshiba 640x480 TFT */
+ .name = "Toshiba_640x480_TFT",
+ .monspecs = {
+ .modedb = NULL,
+ .modedb_len = 0,
+ .hfmin = 30000,
+ .hfmax = 70000,
+ .vfmin = 60,
+ .vfmax = 60,
+ .dclkmin = 6000000,
+ .dclkmax = 28000000,
+ .input = FB_DISP_RGB,
+ },
+ .mode_screen = LCD_SCREEN_SX_N(640) |
+ LCD_SCREEN_SY_N(480),
+ .mode_horztiming = LCD_HORZTIMING_HPW_N(96) |
+ LCD_HORZTIMING_HND1_N(13) | LCD_HORZTIMING_HND2_N(51),
+ .mode_verttiming = LCD_VERTTIMING_VPW_N(2) |
+ LCD_VERTTIMING_VND1_N(11) | LCD_VERTTIMING_VND2_N(32),
+ .mode_clkcontrol = 0x00000000, /* /4=24Mhz */
+ .mode_pwmdiv = 0x8000063f,
+ .mode_pwmhi = 0x03400000,
+ .mode_outmask = 0x00fcfcfc,
+ .mode_fifoctrl = 0x2f2f2f2f,
+ .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
+ .mode_backlight = 0x00000000,
+ .mode_auxpll = 8, /* 96MHz AUXPLL */
+ .device_init = board_au1200fb_panel_init,
+ .device_shutdown = board_au1200fb_panel_shutdown,
+ 640, 480,
+ 640, 480,
+ },
+
+ [7] = { /* Sharp 320x240 TFT */
+ .name = "Sharp_320x240_TFT",
+ .monspecs = {
+ .modedb = NULL,
+ .modedb_len = 0,
+ .hfmin = 12500,
+ .hfmax = 20000,
+ .vfmin = 38,
+ .vfmax = 81,
+ .dclkmin = 4500000,
+ .dclkmax = 6800000,
+ .input = FB_DISP_RGB,
+ },
+ .mode_screen = LCD_SCREEN_SX_N(320) |
+ LCD_SCREEN_SY_N(240),
+ .mode_horztiming = LCD_HORZTIMING_HPW_N(60) |
+ LCD_HORZTIMING_HND1_N(13) | LCD_HORZTIMING_HND2_N(2),
+ .mode_verttiming = LCD_VERTTIMING_VPW_N(2) |
+ LCD_VERTTIMING_VND1_N(2) | LCD_VERTTIMING_VND2_N(5),
+ .mode_clkcontrol = LCD_CLKCONTROL_PCD_N(7), /*16=6Mhz*/
+ .mode_pwmdiv = 0x8000063f,
+ .mode_pwmhi = 0x03400000,
+ .mode_outmask = 0x00fcfcfc,
+ .mode_fifoctrl = 0x2f2f2f2f,
+ .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
+ .mode_backlight = 0x00000000,
+ .mode_auxpll = 8, /* 96MHz AUXPLL */
+ .device_init = board_au1200fb_panel_init,
+ .device_shutdown = board_au1200fb_panel_shutdown,
+ 320, 320,
+ 240, 240,
+ },
+
+ [8] = { /* Toppoly TD070WGCB2 7" 856x480 TFT */
+ .name = "Toppoly_TD070WGCB2",
+ .monspecs = {
+ .modedb = NULL,
+ .modedb_len = 0,
+ .hfmin = 30000,
+ .hfmax = 70000,
+ .vfmin = 60,
+ .vfmax = 60,
+ .dclkmin = 6000000,
+ .dclkmax = 28000000,
+ .input = FB_DISP_RGB,
+ },
+ .mode_screen = LCD_SCREEN_SX_N(856) |
+ LCD_SCREEN_SY_N(480),
+ .mode_horztiming = LCD_HORZTIMING_HND2_N(43) |
+ LCD_HORZTIMING_HND1_N(43) | LCD_HORZTIMING_HPW_N(114),
+ .mode_verttiming = LCD_VERTTIMING_VND2_N(20) |
+ LCD_VERTTIMING_VND1_N(21) | LCD_VERTTIMING_VPW_N(4),
+ .mode_clkcontrol = 0x00020001, /* /4=24Mhz */
+ .mode_pwmdiv = 0x8000063f,
+ .mode_pwmhi = 0x03400000,
+ .mode_outmask = 0x00fcfcfc,
+ .mode_fifoctrl = 0x2f2f2f2f,
+ .mode_toyclksrc = 0x00000004, /* AUXPLL directly */
+ .mode_backlight = 0x00000000,
+ .mode_auxpll = 8, /* 96MHz AUXPLL */
+ .device_init = board_au1200fb_panel_init,
+ .device_shutdown = board_au1200fb_panel_shutdown,
+ 856, 856,
+ 480, 480,
+ },
+};
+
+#define NUM_PANELS (ARRAY_SIZE(known_lcd_panels))
+
+/********************************************************************/
+
+#ifdef CONFIG_PM
+static int set_brightness(unsigned int brightness)
+{
+ unsigned int hi1, divider;
+
+ /* limit brightness pwm duty to >= 30/1600 */
+ if (brightness < 30) {
+ brightness = 30;
+ }
+ divider = (lcd->pwmdiv & 0x3FFFF) + 1;
+ hi1 = (lcd->pwmhi >> 16) + 1;
+ hi1 = (((brightness & 0xFF) + 1) * divider >> 8);
+ lcd->pwmhi &= 0xFFFF;
+ lcd->pwmhi |= (hi1 << 16);
+
+ return brightness;
+}
+#endif /* CONFIG_PM */
+
+static int winbpp (unsigned int winctrl1)
+{
+ int bits = 0;
+
+ /* how many bits are needed for each pixel format */
+ switch (winctrl1 & LCD_WINCTRL1_FRM) {
+ case LCD_WINCTRL1_FRM_1BPP:
+ bits = 1;
+ break;
+ case LCD_WINCTRL1_FRM_2BPP:
+ bits = 2;
+ break;
+ case LCD_WINCTRL1_FRM_4BPP:
+ bits = 4;
+ break;
+ case LCD_WINCTRL1_FRM_8BPP:
+ bits = 8;
+ break;
+ case LCD_WINCTRL1_FRM_12BPP:
+ case LCD_WINCTRL1_FRM_16BPP655:
+ case LCD_WINCTRL1_FRM_16BPP565:
+ case LCD_WINCTRL1_FRM_16BPP556:
+ case LCD_WINCTRL1_FRM_16BPPI1555:
+ case LCD_WINCTRL1_FRM_16BPPI5551:
+ case LCD_WINCTRL1_FRM_16BPPA1555:
+ case LCD_WINCTRL1_FRM_16BPPA5551:
+ bits = 16;
+ break;
+ case LCD_WINCTRL1_FRM_24BPP:
+ case LCD_WINCTRL1_FRM_32BPP:
+ bits = 32;
+ break;
+ }
+
+ return bits;
+}
+
+static int fbinfo2index (struct fb_info *fb_info)
+{
+ int i;
+
+ for (i = 0; i < CONFIG_FB_AU1200_DEVS; ++i) {
+ if (fb_info == (struct fb_info *)(&_au1200fb_devices[i].fb_info))
+ return i;
+ }
+ printk("au1200fb: ERROR: fbinfo2index failed!\n");
+ return -1;
+}
+
+static int au1200_setlocation (struct au1200fb_device *fbdev, int plane,
+ int xpos, int ypos)
+{
+ uint32 winctrl0, winctrl1, winenable, fb_offset = 0;
+ int xsz, ysz;
+
+ /* FIX!!! NOT CHECKING FOR COMPLETE OFFSCREEN YET */
+
+ winctrl0 = lcd->window[plane].winctrl0;
+ winctrl1 = lcd->window[plane].winctrl1;
+ winctrl0 &= (LCD_WINCTRL0_A | LCD_WINCTRL0_AEN);
+ winctrl1 &= ~(LCD_WINCTRL1_SZX | LCD_WINCTRL1_SZY);
+
+ /* Check for off-screen adjustments */
+ xsz = win->w[plane].xres;
+ ysz = win->w[plane].yres;
+ if ((xpos + win->w[plane].xres) > panel->Xres) {
+ /* Off-screen to the right */
+ xsz = panel->Xres - xpos; /* off by 1 ??? */
+ /*printk("off screen right\n");*/
+ }
+
+ if ((ypos + win->w[plane].yres) > panel->Yres) {
+ /* Off-screen to the bottom */
+ ysz = panel->Yres - ypos; /* off by 1 ??? */
+ /*printk("off screen bottom\n");*/
+ }
+
+ if (xpos < 0) {
+ /* Off-screen to the left */
+ xsz = win->w[plane].xres + xpos;
+ fb_offset += (((0 - xpos) * winbpp(lcd->window[plane].winctrl1))/8);
+ xpos = 0;
+ /*printk("off screen left\n");*/
+ }
+
+ if (ypos < 0) {
+ /* Off-screen to the top */
+ ysz = win->w[plane].yres + ypos;
+ /* fixme: fb_offset += ((0-ypos)*fb_pars[plane].line_length); */
+ ypos = 0;
+ /*printk("off screen top\n");*/
+ }
+
+ /* record settings */
+ win->w[plane].xpos = xpos;
+ win->w[plane].ypos = ypos;
+
+ xsz -= 1;
+ ysz -= 1;
+ winctrl0 |= (xpos << 21);
+ winctrl0 |= (ypos << 10);
+ winctrl1 |= (xsz << 11);
+ winctrl1 |= (ysz << 0);
+
+ /* Disable the window while making changes, then restore WINEN */
+ winenable = lcd->winenable & (1 << plane);
+ au_sync();
+ lcd->winenable &= ~(1 << plane);
+ lcd->window[plane].winctrl0 = winctrl0;
+ lcd->window[plane].winctrl1 = winctrl1;
+ lcd->window[plane].winbuf0 =
+ lcd->window[plane].winbuf1 = fbdev->fb_phys;
+ lcd->window[plane].winbufctrl = 0; /* select winbuf0 */
+ lcd->winenable |= winenable;
+ au_sync();
+
+ return 0;
+}
+
+static void au1200_setpanel (struct panel_settings *newpanel)
+{
+ /*
+ * Perform global setup/init of LCD controller
+ */
+ uint32 winenable;
+
+ /* Make sure all windows disabled */
+ winenable = lcd->winenable;
+ lcd->winenable = 0;
+ au_sync();
+ /*
+ * Ensure everything is disabled before reconfiguring
+ */
+ if (lcd->screen & LCD_SCREEN_SEN) {
+ /* Wait for vertical sync period */
+ lcd->intstatus = LCD_INT_SS;
+ while ((lcd->intstatus & LCD_INT_SS) == 0) {
+ au_sync();
+ }
+
+ lcd->screen &= ~LCD_SCREEN_SEN; /*disable the controller*/
+
+ do {
+ lcd->intstatus = lcd->intstatus; /*clear interrupts*/
+ au_sync();
+ /*wait for controller to shut down*/
+ } while ((lcd->intstatus & LCD_INT_SD) == 0);
+
+ /* Call shutdown of current panel (if up) */
+ /* this must occur last, because if an external clock is driving
+ the controller, the clock cannot be turned off before first
+ shutting down the controller.
+ */
+ if (panel->device_shutdown != NULL)
+ panel->device_shutdown();
+ }
+
+ /* Newpanel == NULL indicates a shutdown operation only */
+ if (newpanel == NULL)
+ return;
+
+ panel = newpanel;
+
+ printk("Panel(%s), %dx%d\n", panel->name, panel->Xres, panel->Yres);
+
+ /*
+ * Setup clocking if internal LCD clock source (assumes sys_auxpll valid)
+ */
+ if (!(panel->mode_clkcontrol & LCD_CLKCONTROL_EXT))
+ {
+ uint32 sys_clksrc;
+ au_writel(panel->mode_auxpll, SYS_AUXPLL);
+ sys_clksrc = au_readl(SYS_CLKSRC) & ~0x0000001f;
+ sys_clksrc |= panel->mode_toyclksrc;
+ au_writel(sys_clksrc, SYS_CLKSRC);
+ }
+
+ /*
+ * Configure panel timings
+ */
+ lcd->screen = panel->mode_screen;
+ lcd->horztiming = panel->mode_horztiming;
+ lcd->verttiming = panel->mode_verttiming;
+ lcd->clkcontrol = panel->mode_clkcontrol;
+ lcd->pwmdiv = panel->mode_pwmdiv;
+ lcd->pwmhi = panel->mode_pwmhi;
+ lcd->outmask = panel->mode_outmask;
+ lcd->fifoctrl = panel->mode_fifoctrl;
+ au_sync();
+
+ /* fixme: Check window settings to make sure still valid
+ * for new geometry */
+#if 0
+ au1200_setlocation(fbdev, 0, win->w[0].xpos, win->w[0].ypos);
+ au1200_setlocation(fbdev, 1, win->w[1].xpos, win->w[1].ypos);
+ au1200_setlocation(fbdev, 2, win->w[2].xpos, win->w[2].ypos);
+ au1200_setlocation(fbdev, 3, win->w[3].xpos, win->w[3].ypos);
+#endif
+ lcd->winenable = winenable;
+
+ /*
+ * Re-enable screen now that it is configured
+ */
+ lcd->screen |= LCD_SCREEN_SEN;
+ au_sync();
+
+ /* Call init of panel */
+ if (panel->device_init != NULL) panel->device_init();
+
+ /* FIX!!!! not appropriate on panel change!!! Global setup/init */
+ lcd->intenable = 0;
+ lcd->intstatus = ~0;
+ lcd->backcolor = win->mode_backcolor;
+
+ /* Setup Color Key - FIX!!! */
+ lcd->colorkey = win->mode_colorkey;
+ lcd->colorkeymsk = win->mode_colorkeymsk;
+
+ /* Setup HWCursor - FIX!!! Need to support this eventually */
+ lcd->hwc.cursorctrl = 0;
+ lcd->hwc.cursorpos = 0;
+ lcd->hwc.cursorcolor0 = 0;
+ lcd->hwc.cursorcolor1 = 0;
+ lcd->hwc.cursorcolor2 = 0;
+ lcd->hwc.cursorcolor3 = 0;
+
+
+#if 0
+#define D(X) printk("%25s: %08X\n", #X, X)
+ D(lcd->screen);
+ D(lcd->horztiming);
+ D(lcd->verttiming);
+ D(lcd->clkcontrol);
+ D(lcd->pwmdiv);
+ D(lcd->pwmhi);
+ D(lcd->outmask);
+ D(lcd->fifoctrl);
+ D(lcd->window[0].winctrl0);
+ D(lcd->window[0].winctrl1);
+ D(lcd->window[0].winctrl2);
+ D(lcd->window[0].winbuf0);
+ D(lcd->window[0].winbuf1);
+ D(lcd->window[0].winbufctrl);
+ D(lcd->window[1].winctrl0);
+ D(lcd->window[1].winctrl1);
+ D(lcd->window[1].winctrl2);
+ D(lcd->window[1].winbuf0);
+ D(lcd->window[1].winbuf1);
+ D(lcd->window[1].winbufctrl);
+ D(lcd->window[2].winctrl0);
+ D(lcd->window[2].winctrl1);
+ D(lcd->window[2].winctrl2);
+ D(lcd->window[2].winbuf0);
+ D(lcd->window[2].winbuf1);
+ D(lcd->window[2].winbufctrl);
+ D(lcd->window[3].winctrl0);
+ D(lcd->window[3].winctrl1);
+ D(lcd->window[3].winctrl2);
+ D(lcd->window[3].winbuf0);
+ D(lcd->window[3].winbuf1);
+ D(lcd->window[3].winbufctrl);
+ D(lcd->winenable);
+ D(lcd->intenable);
+ D(lcd->intstatus);
+ D(lcd->backcolor);
+ D(lcd->winenable);
+ D(lcd->colorkey);
+ D(lcd->colorkeymsk);
+ D(lcd->hwc.cursorctrl);
+ D(lcd->hwc.cursorpos);
+ D(lcd->hwc.cursorcolor0);
+ D(lcd->hwc.cursorcolor1);
+ D(lcd->hwc.cursorcolor2);
+ D(lcd->hwc.cursorcolor3);
+#endif
+}
+
+static void au1200_setmode(struct au1200fb_device *fbdev)
+{
+ int plane = fbdev->plane;
+ /* Window/plane setup */
+ lcd->window[plane].winctrl1 = ( 0
+ | LCD_WINCTRL1_PRI_N(plane)
+ | win->w[plane].mode_winctrl1 /* FRM,CCO,PO,PIPE */
+ ) ;
+
+ au1200_setlocation(fbdev, plane, win->w[plane].xpos, win->w[plane].ypos);
+
+ lcd->window[plane].winctrl2 = ( 0
+ | LCD_WINCTRL2_CKMODE_00
+ | LCD_WINCTRL2_DBM
+ | LCD_WINCTRL2_BX_N( fbdev->fb_info.fix.line_length)
+ | LCD_WINCTRL2_SCX_1
+ | LCD_WINCTRL2_SCY_1
+ ) ;
+ lcd->winenable |= win->w[plane].mode_winenable;
+ au_sync();
+}
+
+
+/* Inline helpers */
+
+/*#define panel_is_dual(panel) ((panel->mode_screen & LCD_SCREEN_PT) == LCD_SCREEN_PT_010)*/
+/*#define panel_is_active(panel)((panel->mode_screen & LCD_SCREEN_PT) == LCD_SCREEN_PT_010)*/
+
+#define panel_is_color(panel) ((panel->mode_screen & LCD_SCREEN_PT) <= LCD_SCREEN_PT_CDSTN)
+
+/* Bitfields format supported by the controller. */
+static struct fb_bitfield rgb_bitfields[][4] = {
+ /* Red, Green, Blue, Transp */
+ [LCD_WINCTRL1_FRM_16BPP655 >> 25] =
+ { { 10, 6, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 0, 0, 0 } },
+
+ [LCD_WINCTRL1_FRM_16BPP565 >> 25] =
+ { { 11, 5, 0 }, { 5, 6, 0 }, { 0, 5, 0 }, { 0, 0, 0 } },
+
+ [LCD_WINCTRL1_FRM_16BPP556 >> 25] =
+ { { 11, 5, 0 }, { 6, 5, 0 }, { 0, 6, 0 }, { 0, 0, 0 } },
+
+ [LCD_WINCTRL1_FRM_16BPPI1555 >> 25] =
+ { { 10, 5, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 0, 0, 0 } },
+
+ [LCD_WINCTRL1_FRM_16BPPI5551 >> 25] =
+ { { 11, 5, 0 }, { 6, 5, 0 }, { 1, 5, 0 }, { 0, 0, 0 } },
+
+ [LCD_WINCTRL1_FRM_16BPPA1555 >> 25] =
+ { { 10, 5, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 15, 1, 0 } },
+
+ [LCD_WINCTRL1_FRM_16BPPA5551 >> 25] =
+ { { 11, 5, 0 }, { 6, 5, 0 }, { 1, 5, 0 }, { 0, 1, 0 } },
+
+ [LCD_WINCTRL1_FRM_24BPP >> 25] =
+ { { 16, 8, 0 }, { 8, 8, 0 }, { 0, 8, 0 }, { 0, 0, 0 } },
+
+ [LCD_WINCTRL1_FRM_32BPP >> 25] =
+ { { 16, 8, 0 }, { 8, 8, 0 }, { 0, 8, 0 }, { 24, 0, 0 } },
+};
+
+/*-------------------------------------------------------------------------*/
+
+/* Helpers */
+
+static void au1200fb_update_fbinfo(struct fb_info *fbi)
+{
+ /* FIX!!!! This also needs to take the window pixel format into account!!! */
+
+ /* Update var-dependent FB info */
+ if (panel_is_color(panel)) {
+ if (fbi->var.bits_per_pixel <= 8) {
+ /* palettized */
+ fbi->fix.visual = FB_VISUAL_PSEUDOCOLOR;
+ fbi->fix.line_length = fbi->var.xres_virtual /
+ (8/fbi->var.bits_per_pixel);
+ } else {
+ /* non-palettized */
+ fbi->fix.visual = FB_VISUAL_TRUECOLOR;
+ fbi->fix.line_length = fbi->var.xres_virtual * (fbi->var.bits_per_pixel / 8);
+ }
+ } else {
+ /* mono FIX!!! mono 8 and 4 bits */
+ fbi->fix.visual = FB_VISUAL_MONO10;
+ fbi->fix.line_length = fbi->var.xres_virtual / 8;
+ }
+
+ fbi->screen_size = fbi->fix.line_length * fbi->var.yres_virtual;
+ print_dbg("line length: %d\n", fbi->fix.line_length);
+ print_dbg("bits_per_pixel: %d\n", fbi->var.bits_per_pixel);
+}
+
+/*-------------------------------------------------------------------------*/
+
+/* AU1200 framebuffer driver */
+
+/* fb_check_var
+ * Validate var settings with hardware restrictions and modify it if necessary
+ */
+static int au1200fb_fb_check_var(struct fb_var_screeninfo *var,
+ struct fb_info *fbi)
+{
+ struct au1200fb_device *fbdev = (struct au1200fb_device *)fbi;
+ u32 pixclock;
+ int screen_size, plane;
+
+ plane = fbdev->plane;
+
+ /* Make sure that the mode respect all LCD controller and
+ * panel restrictions. */
+ var->xres = win->w[plane].xres;
+ var->yres = win->w[plane].yres;
+
+ /* No need for virtual resolution support */
+ var->xres_virtual = var->xres;
+ var->yres_virtual = var->yres;
+
+ var->bits_per_pixel = winbpp(win->w[plane].mode_winctrl1);
+
+ screen_size = var->xres_virtual * var->yres_virtual;
+ if (var->bits_per_pixel > 8) screen_size *= (var->bits_per_pixel / 8);
+ else screen_size /= (8/var->bits_per_pixel);
+
+ if (fbdev->fb_len < screen_size)
+ return -EINVAL; /* Virtual screen is to big, abort */
+
+ /* FIX!!!! what are the implicaitons of ignoring this for windows ??? */
+ /* The max LCD clock is fixed to 48MHz (value of AUX_CLK). The pixel
+ * clock can only be obtain by dividing this value by an even integer.
+ * Fallback to a slower pixel clock if necessary. */
+ pixclock = max((u32)(PICOS2KHZ(var->pixclock) * 1000), fbi->monspecs.dclkmin);
+ pixclock = min(pixclock, min(fbi->monspecs.dclkmax, (u32)AU1200_LCD_MAX_CLK/2));
+
+ if (AU1200_LCD_MAX_CLK % pixclock) {
+ int diff = AU1200_LCD_MAX_CLK % pixclock;
+ pixclock -= diff;
+ }
+
+ var->pixclock = KHZ2PICOS(pixclock/1000);
+#if 0
+ if (!panel_is_active(panel)) {
+ int pcd = AU1200_LCD_MAX_CLK / (pixclock * 2) - 1;
+
+ if (!panel_is_color(panel)
+ && (panel->control_base & LCD_CONTROL_MPI) && (pcd < 3)) {
+ /* STN 8bit mono panel support is up to 6MHz pixclock */
+ var->pixclock = KHZ2PICOS(6000);
+ } else if (!pcd) {
+ /* Other STN panel support is up to 12MHz */
+ var->pixclock = KHZ2PICOS(12000);
+ }
+ }
+#endif
+ /* Set bitfield accordingly */
+ switch (var->bits_per_pixel) {
+ case 16:
+ {
+ /* 16bpp True color.
+ * These must be set to MATCH WINCTRL[FORM] */
+ int idx;
+ idx = (win->w[0].mode_winctrl1 & LCD_WINCTRL1_FRM) >> 25;
+ var->red = rgb_bitfields[idx][0];
+ var->green = rgb_bitfields[idx][1];
+ var->blue = rgb_bitfields[idx][2];
+ var->transp = rgb_bitfields[idx][3];
+ break;
+ }
+
+ case 32:
+ {
+ /* 32bpp True color.
+ * These must be set to MATCH WINCTRL[FORM] */
+ int idx;
+ idx = (win->w[0].mode_winctrl1 & LCD_WINCTRL1_FRM) >> 25;
+ var->red = rgb_bitfields[idx][0];
+ var->green = rgb_bitfields[idx][1];
+ var->blue = rgb_bitfields[idx][2];
+ var->transp = rgb_bitfields[idx][3];
+ break;
+ }
+ default:
+ print_dbg("Unsupported depth %dbpp", var->bits_per_pixel);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/* fb_set_par
+ * Set hardware with var settings. This will enable the controller with a
+ * specific mode, normally validated with the fb_check_var method
+ */
+static int au1200fb_fb_set_par(struct fb_info *fbi)
+{
+ struct au1200fb_device *fbdev = (struct au1200fb_device *)fbi;
+
+ au1200fb_update_fbinfo(fbi);
+ au1200_setmode(fbdev);
+
+ return 0;
+}
+
+/* fb_setcolreg
+ * Set color in LCD palette.
+ */
+static int au1200fb_fb_setcolreg(unsigned regno, unsigned red, unsigned green,
+ unsigned blue, unsigned transp, struct fb_info *fbi)
+{
+ volatile u32 *palette = lcd->palette;
+ u32 value;
+
+ if (regno > (AU1200_LCD_NBR_PALETTE_ENTRIES - 1))
+ return -EINVAL;
+
+ if (fbi->var.grayscale) {
+ /* Convert color to grayscale */
+ red = green = blue =
+ (19595 * red + 38470 * green + 7471 * blue) >> 16;
+ }
+
+ if (fbi->fix.visual == FB_VISUAL_TRUECOLOR) {
+ /* Place color in the pseudopalette */
+ if (regno > 16)
+ return -EINVAL;
+
+ palette = (u32*) fbi->pseudo_palette;
+
+ red >>= (16 - fbi->var.red.length);
+ green >>= (16 - fbi->var.green.length);
+ blue >>= (16 - fbi->var.blue.length);
+
+ value = (red << fbi->var.red.offset) |
+ (green << fbi->var.green.offset)|
+ (blue << fbi->var.blue.offset);
+ value &= 0xFFFF;
+
+ } else if (1 /*FIX!!! panel_is_active(fbdev->panel)*/) {
+ /* COLOR TFT PALLETTIZED (use RGB 565) */
+ value = (red & 0xF800)|((green >> 5) &
+ 0x07E0)|((blue >> 11) & 0x001F);
+ value &= 0xFFFF;
+
+ } else if (0 /*panel_is_color(fbdev->panel)*/) {
+ /* COLOR STN MODE */
+ value = 0x1234;
+ value &= 0xFFF;
+ } else {
+ /* MONOCHROME MODE */
+ value = (green >> 12) & 0x000F;
+ value &= 0xF;
+ }
+
+ palette[regno] = value;
+
+ return 0;
+}
+
+/* fb_blank
+ * Blank the screen. Depending on the mode, the screen will be
+ * activated with the backlight color, or desactivated
+ */
+static int au1200fb_fb_blank(int blank_mode, struct fb_info *fbi)
+{
+ /* Short-circuit screen blanking */
+ if (noblanking)
+ return 0;
+
+ switch (blank_mode) {
+
+ case FB_BLANK_UNBLANK:
+ case FB_BLANK_NORMAL:
+ /* printk("turn on panel\n"); */
+ au1200_setpanel(panel);
+ break;
+ case FB_BLANK_VSYNC_SUSPEND:
+ case FB_BLANK_HSYNC_SUSPEND:
+ case FB_BLANK_POWERDOWN:
+ /* printk("turn off panel\n"); */
+ au1200_setpanel(NULL);
+ break;
+ default:
+ break;
+
+ }
+
+ /* FB_BLANK_NORMAL is a soft blank */
+ return (blank_mode == FB_BLANK_NORMAL) ? -EINVAL : 0;
+}
+
+/* fb_mmap
+ * Map video memory in user space. We don't use the generic fb_mmap
+ * method mainly to allow the use of the TLB streaming flag (CCA=6)
+ */
+static int au1200fb_fb_mmap(struct fb_info *info, struct vm_area_struct *vma)
+
+{
+ unsigned int len;
+ unsigned long start=0, off;
+ struct au1200fb_device *fbdev = (struct au1200fb_device *) info;
+
+#ifdef CONFIG_PM
+ au1xxx_pm_access(LCD_pm_dev);
+#endif
+
+ if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT)) {
+ return -EINVAL;
+ }
+
+ start = fbdev->fb_phys & PAGE_MASK;
+ len = PAGE_ALIGN((start & ~PAGE_MASK) + fbdev->fb_len);
+
+ off = vma->vm_pgoff << PAGE_SHIFT;
+
+ if ((vma->vm_end - vma->vm_start + off) > len) {
+ return -EINVAL;
+ }
+
+ off += start;
+ vma->vm_pgoff = off >> PAGE_SHIFT;
+
+ vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+ pgprot_val(vma->vm_page_prot) |= _CACHE_MASK; /* CCA=7 */
+
+ vma->vm_flags |= VM_IO;
+
+ return io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT,
+ vma->vm_end - vma->vm_start,
+ vma->vm_page_prot);
+
+ return 0;
+}
+
+static void set_global(u_int cmd, struct au1200_lcd_global_regs_t *pdata)
+{
+
+ unsigned int hi1, divider;
+
+ /* SCREEN_SIZE: user cannot reset size, must switch panel choice */
+
+ if (pdata->flags & SCREEN_BACKCOLOR)
+ lcd->backcolor = pdata->backcolor;
+
+ if (pdata->flags & SCREEN_BRIGHTNESS) {
+
+ // limit brightness pwm duty to >= 30/1600
+ if (pdata->brightness < 30) {
+ pdata->brightness = 30;
+ }
+ divider = (lcd->pwmdiv & 0x3FFFF) + 1;
+ hi1 = (lcd->pwmhi >> 16) + 1;
+ hi1 = (((pdata->brightness & 0xFF)+1) * divider >> 8);
+ lcd->pwmhi &= 0xFFFF;
+ lcd->pwmhi |= (hi1 << 16);
+ }
+
+ if (pdata->flags & SCREEN_COLORKEY)
+ lcd->colorkey = pdata->colorkey;
+
+ if (pdata->flags & SCREEN_MASK)
+ lcd->colorkeymsk = pdata->mask;
+ au_sync();
+}
+
+static void get_global(u_int cmd, struct au1200_lcd_global_regs_t *pdata)
+{
+ unsigned int hi1, divider;
+
+ pdata->xsize = ((lcd->screen & LCD_SCREEN_SX) >> 19) + 1;
+ pdata->ysize = ((lcd->screen & LCD_SCREEN_SY) >> 8) + 1;
+
+ pdata->backcolor = lcd->backcolor;
+ pdata->colorkey = lcd->colorkey;
+ pdata->mask = lcd->colorkeymsk;
+
+ // brightness
+ hi1 = (lcd->pwmhi >> 16) + 1;
+ divider = (lcd->pwmdiv & 0x3FFFF) + 1;
+ pdata->brightness = ((hi1 << 8) / divider) - 1;
+ au_sync();
+}
+
+static void set_window(unsigned int plane,
+ struct au1200_lcd_window_regs_t *pdata)
+{
+ unsigned int val, bpp;
+
+ /* Window control register 0 */
+ if (pdata->flags & WIN_POSITION) {
+ val = lcd->window[plane].winctrl0 & ~(LCD_WINCTRL0_OX |
+ LCD_WINCTRL0_OY);
+ val |= ((pdata->xpos << 21) & LCD_WINCTRL0_OX);
+ val |= ((pdata->ypos << 10) & LCD_WINCTRL0_OY);
+ lcd->window[plane].winctrl0 = val;
+ }
+ if (pdata->flags & WIN_ALPHA_COLOR) {
+ val = lcd->window[plane].winctrl0 & ~(LCD_WINCTRL0_A);
+ val |= ((pdata->alpha_color << 2) & LCD_WINCTRL0_A);
+ lcd->window[plane].winctrl0 = val;
+ }
+ if (pdata->flags & WIN_ALPHA_MODE) {
+ val = lcd->window[plane].winctrl0 & ~(LCD_WINCTRL0_AEN);
+ val |= ((pdata->alpha_mode << 1) & LCD_WINCTRL0_AEN);
+ lcd->window[plane].winctrl0 = val;
+ }
+
+ /* Window control register 1 */
+ if (pdata->flags & WIN_PRIORITY) {
+ val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_PRI);
+ val |= ((pdata->priority << 30) & LCD_WINCTRL1_PRI);
+ lcd->window[plane].winctrl1 = val;
+ }
+ if (pdata->flags & WIN_CHANNEL) {
+ val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_PIPE);
+ val |= ((pdata->channel << 29) & LCD_WINCTRL1_PIPE);
+ lcd->window[plane].winctrl1 = val;
+ }
+ if (pdata->flags & WIN_BUFFER_FORMAT) {
+ val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_FRM);
+ val |= ((pdata->buffer_format << 25) & LCD_WINCTRL1_FRM);
+ lcd->window[plane].winctrl1 = val;
+ }
+ if (pdata->flags & WIN_COLOR_ORDER) {
+ val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_CCO);
+ val |= ((pdata->color_order << 24) & LCD_WINCTRL1_CCO);
+ lcd->window[plane].winctrl1 = val;
+ }
+ if (pdata->flags & WIN_PIXEL_ORDER) {
+ val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_PO);
+ val |= ((pdata->pixel_order << 22) & LCD_WINCTRL1_PO);
+ lcd->window[plane].winctrl1 = val;
+ }
+ if (pdata->flags & WIN_SIZE) {
+ val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_SZX |
+ LCD_WINCTRL1_SZY);
+ val |= (((pdata->xsize << 11) - 1) & LCD_WINCTRL1_SZX);
+ val |= (((pdata->ysize) - 1) & LCD_WINCTRL1_SZY);
+ lcd->window[plane].winctrl1 = val;
+ /* program buffer line width */
+ bpp = winbpp(val) / 8;
+ val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_BX);
+ val |= (((pdata->xsize * bpp) << 8) & LCD_WINCTRL2_BX);
+ lcd->window[plane].winctrl2 = val;
+ }
+
+ /* Window control register 2 */
+ if (pdata->flags & WIN_COLORKEY_MODE) {
+ val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_CKMODE);
+ val |= ((pdata->colorkey_mode << 24) & LCD_WINCTRL2_CKMODE);
+ lcd->window[plane].winctrl2 = val;
+ }
+ if (pdata->flags & WIN_DOUBLE_BUFFER_MODE) {
+ val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_DBM);
+ val |= ((pdata->double_buffer_mode << 23) & LCD_WINCTRL2_DBM);
+ lcd->window[plane].winctrl2 = val;
+ }
+ if (pdata->flags & WIN_RAM_ARRAY_MODE) {
+ val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_RAM);
+ val |= ((pdata->ram_array_mode << 21) & LCD_WINCTRL2_RAM);
+ lcd->window[plane].winctrl2 = val;
+ }
+
+ /* Buffer line width programmed with WIN_SIZE */
+
+ if (pdata->flags & WIN_BUFFER_SCALE) {
+ val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_SCX |
+ LCD_WINCTRL2_SCY);
+ val |= ((pdata->xsize << 11) & LCD_WINCTRL2_SCX);
+ val |= ((pdata->ysize) & LCD_WINCTRL2_SCY);
+ lcd->window[plane].winctrl2 = val;
+ }
+
+ if (pdata->flags & WIN_ENABLE) {
+ val = lcd->winenable;
+ val &= ~(1<<plane);
+ val |= (pdata->enable & 1) << plane;
+ lcd->winenable = val;
+ }
+ au_sync();
+}
+
+static void get_window(unsigned int plane,
+ struct au1200_lcd_window_regs_t *pdata)
+{
+ /* Window control register 0 */
+ pdata->xpos = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_OX) >> 21;
+ pdata->ypos = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_OY) >> 10;
+ pdata->alpha_color = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_A) >> 2;
+ pdata->alpha_mode = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_AEN) >> 1;
+
+ /* Window control register 1 */
+ pdata->priority = (lcd->window[plane].winctrl1& LCD_WINCTRL1_PRI) >> 30;
+ pdata->channel = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_PIPE) >> 29;
+ pdata->buffer_format = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_FRM) >> 25;
+ pdata->color_order = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_CCO) >> 24;
+ pdata->pixel_order = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_PO) >> 22;
+ pdata->xsize = ((lcd->window[plane].winctrl1 & LCD_WINCTRL1_SZX) >> 11) + 1;
+ pdata->ysize = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_SZY) + 1;
+
+ /* Window control register 2 */
+ pdata->colorkey_mode = (lcd->window[plane].winctrl2 & LCD_WINCTRL2_CKMODE) >> 24;
+ pdata->double_buffer_mode = (lcd->window[plane].winctrl2 & LCD_WINCTRL2_DBM) >> 23;
+ pdata->ram_array_mode = (lcd->window[plane].winctrl2 & LCD_WINCTRL2_RAM) >> 21;
+
+ pdata->enable = (lcd->winenable >> plane) & 1;
+ au_sync();
+}
+
+static int au1200fb_ioctl(struct fb_info *info, unsigned int cmd,
+ unsigned long arg)
+{
+ int plane;
+ int val;
+
+#ifdef CONFIG_PM
+ au1xxx_pm_access(LCD_pm_dev);
+#endif
+
+ plane = fbinfo2index(info);
+ print_dbg("au1200fb: ioctl %d on plane %d\n", cmd, plane);
+
+ if (cmd == AU1200_LCD_FB_IOCTL) {
+ struct au1200_lcd_iodata_t iodata;
+
+ if (copy_from_user(&iodata, (void __user *) arg, sizeof(iodata)))
+ return -EFAULT;
+
+ print_dbg("FB IOCTL called\n");
+
+ switch (iodata.subcmd) {
+ case AU1200_LCD_SET_SCREEN:
+ print_dbg("AU1200_LCD_SET_SCREEN\n");
+ set_global(cmd, &iodata.global);
+ break;
+
+ case AU1200_LCD_GET_SCREEN:
+ print_dbg("AU1200_LCD_GET_SCREEN\n");
+ get_global(cmd, &iodata.global);
+ break;
+
+ case AU1200_LCD_SET_WINDOW:
+ print_dbg("AU1200_LCD_SET_WINDOW\n");
+ set_window(plane, &iodata.window);
+ break;
+
+ case AU1200_LCD_GET_WINDOW:
+ print_dbg("AU1200_LCD_GET_WINDOW\n");
+ get_window(plane, &iodata.window);
+ break;
+
+ case AU1200_LCD_SET_PANEL:
+ print_dbg("AU1200_LCD_SET_PANEL\n");
+ if ((iodata.global.panel_choice >= 0) &&
+ (iodata.global.panel_choice <
+ NUM_PANELS))
+ {
+ struct panel_settings *newpanel;
+ panel_index = iodata.global.panel_choice;
+ newpanel = &known_lcd_panels[panel_index];
+ au1200_setpanel(newpanel);
+ }
+ break;
+
+ case AU1200_LCD_GET_PANEL:
+ print_dbg("AU1200_LCD_GET_PANEL\n");
+ iodata.global.panel_choice = panel_index;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ val = copy_to_user((void __user *) arg, &iodata, sizeof(iodata));
+ if (val) {
+ print_dbg("error: could not copy %d bytes\n", val);
+ return -EFAULT;
+ }
+ }
+
+ return 0;
+}
+
+
+static struct fb_ops au1200fb_fb_ops = {
+ .owner = THIS_MODULE,
+ .fb_check_var = au1200fb_fb_check_var,
+ .fb_set_par = au1200fb_fb_set_par,
+ .fb_setcolreg = au1200fb_fb_setcolreg,
+ .fb_blank = au1200fb_fb_blank,
+ .fb_fillrect = cfb_fillrect,
+ .fb_copyarea = cfb_copyarea,
+ .fb_imageblit = cfb_imageblit,
+ .fb_sync = NULL,
+ .fb_ioctl = au1200fb_ioctl,
+ .fb_mmap = au1200fb_fb_mmap,
+};
+
+/*-------------------------------------------------------------------------*/
+
+static irqreturn_t au1200fb_handle_irq(int irq, void* dev_id, struct pt_regs *regs)
+{
+ /* Nothing to do for now, just clear any pending interrupt */
+ lcd->intstatus = lcd->intstatus;
+ au_sync();
+
+ return IRQ_HANDLED;
+}
+
+/*-------------------------------------------------------------------------*/
+
+/* AU1200 LCD device probe helpers */
+
+static int au1200fb_init_fbinfo(struct au1200fb_device *fbdev)
+{
+ struct fb_info *fbi = &fbdev->fb_info;
+ int bpp;
+
+ memset(fbi, 0, sizeof(struct fb_info));
+ fbi->fbops = &au1200fb_fb_ops;
+
+ bpp = winbpp(win->w[fbdev->plane].mode_winctrl1);
+
+ /* Copy monitor specs from panel data */
+ /* fixme: we're setting up LCD controller windows, so these dont give a
+ damn as to what the monitor specs are (the panel itself does, but that
+ isnt done here...so maybe need a generic catchall monitor setting??? */
+ memcpy(&fbi->monspecs, &panel->monspecs, sizeof(struct fb_monspecs));
+
+ /* We first try the user mode passed in argument. If that failed,
+ * or if no one has been specified, we default to the first mode of the
+ * panel list. Note that after this call, var data will be set */
+ if (!fb_find_mode(&fbi->var,
+ fbi,
+ NULL, /* drv_info.opt_mode, */
+ fbi->monspecs.modedb,
+ fbi->monspecs.modedb_len,
+ fbi->monspecs.modedb,
+ bpp)) {
+
+ print_err("Cannot find valid mode for panel %s", panel->name);
+ return -EFAULT;
+ }
+
+ fbi->pseudo_palette = kmalloc(sizeof(u32) * 16, GFP_KERNEL);
+ if (!fbi->pseudo_palette) {
+ return -ENOMEM;
+ }
+ memset(fbi->pseudo_palette, 0, sizeof(u32) * 16);
+
+ if (fb_alloc_cmap(&fbi->cmap, AU1200_LCD_NBR_PALETTE_ENTRIES, 0) < 0) {
+ print_err("Fail to allocate colormap (%d entries)",
+ AU1200_LCD_NBR_PALETTE_ENTRIES);
+ kfree(fbi->pseudo_palette);
+ return -EFAULT;
+ }
+
+ strncpy(fbi->fix.id, "AU1200", sizeof(fbi->fix.id));
+ fbi->fix.smem_start = fbdev->fb_phys;
+ fbi->fix.smem_len = fbdev->fb_len;
+ fbi->fix.type = FB_TYPE_PACKED_PIXELS;
+ fbi->fix.xpanstep = 0;
+ fbi->fix.ypanstep = 0;
+ fbi->fix.mmio_start = 0;
+ fbi->fix.mmio_len = 0;
+ fbi->fix.accel = FB_ACCEL_NONE;
+
+ fbi->screen_base = (char __iomem *) fbdev->fb_mem;
+
+ au1200fb_update_fbinfo(fbi);
+
+ return 0;
+}
+
+/*-------------------------------------------------------------------------*/
+
+/* AU1200 LCD controller device driver */
+
+static int au1200fb_drv_probe(struct device *dev)
+{
+ struct au1200fb_device *fbdev;
+ unsigned long page;
+ int bpp, plane, ret;
+
+ if (!dev)
+ return -EINVAL;
+
+ for (plane = 0; plane < CONFIG_FB_AU1200_DEVS; ++plane) {
+ bpp = winbpp(win->w[plane].mode_winctrl1);
+ if (win->w[plane].xres == 0)
+ win->w[plane].xres = panel->Xres;
+ if (win->w[plane].yres == 0)
+ win->w[plane].yres = panel->Yres;
+
+ fbdev = &_au1200fb_devices[plane];
+ memset(fbdev, 0, sizeof(struct au1200fb_device));
+ fbdev->plane = plane;
+
+ /* Allocate the framebuffer to the maximum screen size */
+ fbdev->fb_len = (win->w[plane].xres * win->w[plane].yres * bpp) / 8;
+
+ fbdev->fb_mem = dma_alloc_noncoherent(dev,
+ PAGE_ALIGN(fbdev->fb_len),
+ &fbdev->fb_phys, GFP_KERNEL);
+ if (!fbdev->fb_mem) {
+ print_err("fail to allocate frambuffer (size: %dK))",
+ fbdev->fb_len / 1024);
+ return -ENOMEM;
+ }
+
+ /*
+ * Set page reserved so that mmap will work. This is necessary
+ * since we'll be remapping normal memory.
+ */
+ for (page = (unsigned long)fbdev->fb_phys;
+ page < PAGE_ALIGN((unsigned long)fbdev->fb_phys +
+ fbdev->fb_len);
+ page += PAGE_SIZE) {
+ SetPageReserved(pfn_to_page(page >> PAGE_SHIFT)); /* LCD DMA is NOT coherent on Au1200 */
+ }
+ print_dbg("Framebuffer memory map at %p", fbdev->fb_mem);
+ print_dbg("phys=0x%08x, size=%dK", fbdev->fb_phys, fbdev->fb_len / 1024);
+
+ /* Init FB data */
+ if ((ret = au1200fb_init_fbinfo(fbdev)) < 0)
+ goto failed;
+
+ /* Register new framebuffer */
+ if ((ret = register_framebuffer(&fbdev->fb_info)) < 0) {
+ print_err("cannot register new framebuffer");
+ goto failed;
+ }
+
+ au1200fb_fb_set_par(&fbdev->fb_info);
+
+#if !defined(CONFIG_FRAMEBUFFER_CONSOLE) && defined(CONFIG_LOGO)
+ if (plane == 0)
+ if (fb_prepare_logo(&fbdev->fb_info, FB_ROTATE_UR)) {
+ /* Start display and show logo on boot */
+ fb_set_cmap(&fbdev->fb_info.cmap,
+ &fbdev->fb_info);
+
+ fb_show_logo(&fbdev->fb_info, FB_ROTATE_UR);
+ }
+#endif
+ }
+
+ /* Now hook interrupt too */
+ if ((ret = request_irq(AU1200_LCD_INT, au1200fb_handle_irq,
+ SA_INTERRUPT | SA_SHIRQ, "lcd", (void *)dev)) < 0) {
+ print_err("fail to request interrupt line %d (err: %d)",
+ AU1200_LCD_INT, ret);
+ goto failed;
+ }
+
+ return 0;
+
+failed:
+ /* NOTE: This only does the current plane/window that failed; others are still active */
+ if (fbdev->fb_mem)
+ dma_free_noncoherent(dev, PAGE_ALIGN(fbdev->fb_len),
+ fbdev->fb_mem, fbdev->fb_phys);
+ if (fbdev->fb_info.cmap.len != 0)
+ fb_dealloc_cmap(&fbdev->fb_info.cmap);
+ if (fbdev->fb_info.pseudo_palette)
+ kfree(fbdev->fb_info.pseudo_palette);
+ if (plane == 0)
+ free_irq(AU1200_LCD_INT, (void*)dev);
+ return ret;
+}
+
+static int au1200fb_drv_remove(struct device *dev)
+{
+ struct au1200fb_device *fbdev;
+ int plane;
+
+ if (!dev)
+ return -ENODEV;
+
+ /* Turn off the panel */
+ au1200_setpanel(NULL);
+
+ for (plane = 0; plane < CONFIG_FB_AU1200_DEVS; ++plane)
+ {
+ fbdev = &_au1200fb_devices[plane];
+
+ /* Clean up all probe data */
+ unregister_framebuffer(&fbdev->fb_info);
+ if (fbdev->fb_mem)
+ dma_free_noncoherent(dev, PAGE_ALIGN(fbdev->fb_len),
+ fbdev->fb_mem, fbdev->fb_phys);
+ if (fbdev->fb_info.cmap.len != 0)
+ fb_dealloc_cmap(&fbdev->fb_info.cmap);
+ if (fbdev->fb_info.pseudo_palette)
+ kfree(fbdev->fb_info.pseudo_palette);
+ }
+
+ free_irq(AU1200_LCD_INT, (void *)dev);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int au1200fb_drv_suspend(struct device *dev, u32 state, u32 level)
+{
+ /* TODO */
+ return 0;
+}
+
+static int au1200fb_drv_resume(struct device *dev, u32 level)
+{
+ /* TODO */
+ return 0;
+}
+#endif /* CONFIG_PM */
+
+static struct device_driver au1200fb_driver = {
+ .name = "au1200-lcd",
+ .bus = &platform_bus_type,
+ .probe = au1200fb_drv_probe,
+ .remove = au1200fb_drv_remove,
+#ifdef CONFIG_PM
+ .suspend = au1200fb_drv_suspend,
+ .resume = au1200fb_drv_resume,
+#endif
+};
+
+/*-------------------------------------------------------------------------*/
+
+/* Kernel driver */
+
+static void au1200fb_setup(void)
+{
+ char* options = NULL;
+ char* this_opt;
+ int num_panels = ARRAY_SIZE(known_lcd_panels);
+ int panel_idx = -1;
+
+ fb_get_options(DRIVER_NAME, &options);
+
+ if (options) {
+ while ((this_opt = strsep(&options,",")) != NULL) {
+ /* Panel option - can be panel name,
+ * "bs" for board-switch, or number/index */
+ if (!strncmp(this_opt, "panel:", 6)) {
+ int i;
+ long int li;
+ char *endptr;
+ this_opt += 6;
+ /* First check for index, which allows
+ * to short circuit this mess */
+ li = simple_strtol(this_opt, &endptr, 0);
+ if (*endptr == '\0') {
+ panel_idx = (int)li;
+ }
+ else if (strcmp(this_opt, "bs") == 0) {
+ extern int board_au1200fb_panel(void);
+ panel_idx = board_au1200fb_panel();
+ }
+
+ else
+ for (i = 0; i < num_panels; i++) {
+ if (!strcmp(this_opt, known_lcd_panels[i].name)) {
+ panel_idx = i;
+ break;
+ }
+ }
+
+ if ((panel_idx < 0) || (panel_idx >= num_panels)) {
+ print_warn("Panel %s not supported!", this_opt);
+ }
+ else
+ panel_index = panel_idx;
+ }
+
+ else if (strncmp(this_opt, "nohwcursor", 10) == 0) {
+ nohwcursor = 1;
+ }
+
+ /* Unsupported option */
+ else {
+ print_warn("Unsupported option \"%s\"", this_opt);
+ }
+ }
+ }
+}
+
+#ifdef CONFIG_PM
+static int au1200fb_pm_callback(au1xxx_power_dev_t *dev,
+ au1xxx_request_t request, void *data) {
+ int retval = -1;
+ unsigned int d = 0;
+ unsigned int brightness = 0;
+
+ if (request == AU1XXX_PM_SLEEP) {
+ board_au1200fb_panel_shutdown();
+ }
+ else if (request == AU1XXX_PM_WAKEUP) {
+ if(dev->prev_state == SLEEP_STATE)
+ {
+ int plane;
+ au1200_setpanel(panel);
+ for (plane = 0; plane < CONFIG_FB_AU1200_DEVS; ++plane) {
+ struct au1200fb_device *fbdev;
+ fbdev = &_au1200fb_devices[plane];
+ au1200fb_fb_set_par(&fbdev->fb_info);
+ }
+ }
+
+ d = *((unsigned int*)data);
+ if(d <=10) brightness = 26;
+ else if(d<=20) brightness = 51;
+ else if(d<=30) brightness = 77;
+ else if(d<=40) brightness = 102;
+ else if(d<=50) brightness = 128;
+ else if(d<=60) brightness = 153;
+ else if(d<=70) brightness = 179;
+ else if(d<=80) brightness = 204;
+ else if(d<=90) brightness = 230;
+ else brightness = 255;
+ set_brightness(brightness);
+ } else if (request == AU1XXX_PM_GETSTATUS) {
+ return dev->cur_state;
+ } else if (request == AU1XXX_PM_ACCESS) {
+ if (dev->cur_state != SLEEP_STATE)
+ return retval;
+ else {
+ au1200_setpanel(panel);
+ }
+ } else if (request == AU1XXX_PM_IDLE) {
+ } else if (request == AU1XXX_PM_CLEANUP) {
+ }
+
+ return retval;
+}
+#endif
+
+static int __init au1200fb_init(void)
+{
+ print_info("" DRIVER_DESC "");
+
+ /* Setup driver with options */
+ au1200fb_setup();
+
+ /* Point to the panel selected */
+ panel = &known_lcd_panels[panel_index];
+ win = &windows[window_index];
+
+ printk(DRIVER_NAME ": Panel %d %s\n", panel_index, panel->name);
+ printk(DRIVER_NAME ": Win %d %s\n", window_index, win->name);
+
+ /* Kickstart the panel, the framebuffers/windows come soon enough */
+ au1200_setpanel(panel);
+
+ #ifdef CONFIG_PM
+ LCD_pm_dev = new_au1xxx_power_device("LCD", &au1200fb_pm_callback, NULL);
+ if ( LCD_pm_dev == NULL)
+ printk(KERN_INFO "Unable to create a power management device entry for the au1200fb.\n");
+ else
+ printk(KERN_INFO "Power management device entry for the au1200fb loaded.\n");
+ #endif
+
+ return driver_register(&au1200fb_driver);
+}
+
+static void __exit au1200fb_cleanup(void)
+{
+ driver_unregister(&au1200fb_driver);
+}
+
+module_init(au1200fb_init);
+module_exit(au1200fb_cleanup);
+
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
--- /dev/null
+/*
+ * BRIEF MODULE DESCRIPTION
+ * Hardware definitions for the Au1200 LCD controller
+ *
+ * Copyright 2004 AMD
+ * Author: AMD
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef _AU1200LCD_H
+#define _AU1200LCD_H
+
+/********************************************************************/
+#define AU1200_LCD_ADDR 0xB5000000
+
+#define uint8 unsigned char
+#define uint32 unsigned int
+
+struct au1200_lcd {
+ volatile uint32 reserved0;
+ volatile uint32 screen;
+ volatile uint32 backcolor;
+ volatile uint32 horztiming;
+ volatile uint32 verttiming;
+ volatile uint32 clkcontrol;
+ volatile uint32 pwmdiv;
+ volatile uint32 pwmhi;
+ volatile uint32 reserved1;
+ volatile uint32 winenable;
+ volatile uint32 colorkey;
+ volatile uint32 colorkeymsk;
+ struct
+ {
+ volatile uint32 cursorctrl;
+ volatile uint32 cursorpos;
+ volatile uint32 cursorcolor0;
+ volatile uint32 cursorcolor1;
+ volatile uint32 cursorcolor2;
+ uint32 cursorcolor3;
+ } hwc;
+ volatile uint32 intstatus;
+ volatile uint32 intenable;
+ volatile uint32 outmask;
+ volatile uint32 fifoctrl;
+ uint32 reserved2[(0x0100-0x0058)/4];
+ struct
+ {
+ volatile uint32 winctrl0;
+ volatile uint32 winctrl1;
+ volatile uint32 winctrl2;
+ volatile uint32 winbuf0;
+ volatile uint32 winbuf1;
+ volatile uint32 winbufctrl;
+ uint32 winreserved0;
+ uint32 winreserved1;
+ } window[4];
+
+ uint32 reserved3[(0x0400-0x0180)/4];
+
+ volatile uint32 palette[(0x0800-0x0400)/4];
+
+ volatile uint8 cursorpattern[256];
+};
+
+/* lcd_screen */
+#define LCD_SCREEN_SEN (1<<31)
+#define LCD_SCREEN_SX (0x07FF<<19)
+#define LCD_SCREEN_SY (0x07FF<< 8)
+#define LCD_SCREEN_SWP (1<<7)
+#define LCD_SCREEN_SWD (1<<6)
+#define LCD_SCREEN_PT (7<<0)
+#define LCD_SCREEN_PT_TFT (0<<0)
+#define LCD_SCREEN_SX_N(WIDTH) ((WIDTH-1)<<19)
+#define LCD_SCREEN_SY_N(HEIGHT) ((HEIGHT-1)<<8)
+#define LCD_SCREEN_PT_CSTN (1<<0)
+#define LCD_SCREEN_PT_CDSTN (2<<0)
+#define LCD_SCREEN_PT_M8STN (3<<0)
+#define LCD_SCREEN_PT_M4STN (4<<0)
+
+/* lcd_backcolor */
+#define LCD_BACKCOLOR_SBGR (0xFF<<16)
+#define LCD_BACKCOLOR_SBGG (0xFF<<8)
+#define LCD_BACKCOLOR_SBGB (0xFF<<0)
+#define LCD_BACKCOLOR_SBGR_N(N) ((N)<<16)
+#define LCD_BACKCOLOR_SBGG_N(N) ((N)<<8)
+#define LCD_BACKCOLOR_SBGB_N(N) ((N)<<0)
+
+/* lcd_winenable */
+#define LCD_WINENABLE_WEN3 (1<<3)
+#define LCD_WINENABLE_WEN2 (1<<2)
+#define LCD_WINENABLE_WEN1 (1<<1)
+#define LCD_WINENABLE_WEN0 (1<<0)
+
+/* lcd_colorkey */
+#define LCD_COLORKEY_CKR (0xFF<<16)
+#define LCD_COLORKEY_CKG (0xFF<<8)
+#define LCD_COLORKEY_CKB (0xFF<<0)
+#define LCD_COLORKEY_CKR_N(N) ((N)<<16)
+#define LCD_COLORKEY_CKG_N(N) ((N)<<8)
+#define LCD_COLORKEY_CKB_N(N) ((N)<<0)
+
+/* lcd_colorkeymsk */
+#define LCD_COLORKEYMSK_CKMR (0xFF<<16)
+#define LCD_COLORKEYMSK_CKMG (0xFF<<8)
+#define LCD_COLORKEYMSK_CKMB (0xFF<<0)
+#define LCD_COLORKEYMSK_CKMR_N(N) ((N)<<16)
+#define LCD_COLORKEYMSK_CKMG_N(N) ((N)<<8)
+#define LCD_COLORKEYMSK_CKMB_N(N) ((N)<<0)
+
+/* lcd windows control 0 */
+#define LCD_WINCTRL0_OX (0x07FF<<21)
+#define LCD_WINCTRL0_OY (0x07FF<<10)
+#define LCD_WINCTRL0_A (0x00FF<<2)
+#define LCD_WINCTRL0_AEN (1<<1)
+#define LCD_WINCTRL0_OX_N(N) ((N)<<21)
+#define LCD_WINCTRL0_OY_N(N) ((N)<<10)
+#define LCD_WINCTRL0_A_N(N) ((N)<<2)
+
+/* lcd windows control 1 */
+#define LCD_WINCTRL1_PRI (3<<30)
+#define LCD_WINCTRL1_PIPE (1<<29)
+#define LCD_WINCTRL1_FRM (0xF<<25)
+#define LCD_WINCTRL1_CCO (1<<24)
+#define LCD_WINCTRL1_PO (3<<22)
+#define LCD_WINCTRL1_SZX (0x07FF<<11)
+#define LCD_WINCTRL1_SZY (0x07FF<<0)
+#define LCD_WINCTRL1_FRM_1BPP (0<<25)
+#define LCD_WINCTRL1_FRM_2BPP (1<<25)
+#define LCD_WINCTRL1_FRM_4BPP (2<<25)
+#define LCD_WINCTRL1_FRM_8BPP (3<<25)
+#define LCD_WINCTRL1_FRM_12BPP (4<<25)
+#define LCD_WINCTRL1_FRM_16BPP655 (5<<25)
+#define LCD_WINCTRL1_FRM_16BPP565 (6<<25)
+#define LCD_WINCTRL1_FRM_16BPP556 (7<<25)
+#define LCD_WINCTRL1_FRM_16BPPI1555 (8<<25)
+#define LCD_WINCTRL1_FRM_16BPPI5551 (9<<25)
+#define LCD_WINCTRL1_FRM_16BPPA1555 (10<<25)
+#define LCD_WINCTRL1_FRM_16BPPA5551 (11<<25)
+#define LCD_WINCTRL1_FRM_24BPP (12<<25)
+#define LCD_WINCTRL1_FRM_32BPP (13<<25)
+#define LCD_WINCTRL1_PRI_N(N) ((N)<<30)
+#define LCD_WINCTRL1_PO_00 (0<<22)
+#define LCD_WINCTRL1_PO_01 (1<<22)
+#define LCD_WINCTRL1_PO_10 (2<<22)
+#define LCD_WINCTRL1_PO_11 (3<<22)
+#define LCD_WINCTRL1_SZX_N(N) ((N-1)<<11)
+#define LCD_WINCTRL1_SZY_N(N) ((N-1)<<0)
+
+/* lcd windows control 2 */
+#define LCD_WINCTRL2_CKMODE (3<<24)
+#define LCD_WINCTRL2_DBM (1<<23)
+#define LCD_WINCTRL2_RAM (3<<21)
+#define LCD_WINCTRL2_BX (0x1FFF<<8)
+#define LCD_WINCTRL2_SCX (0xF<<4)
+#define LCD_WINCTRL2_SCY (0xF<<0)
+#define LCD_WINCTRL2_CKMODE_00 (0<<24)
+#define LCD_WINCTRL2_CKMODE_01 (1<<24)
+#define LCD_WINCTRL2_CKMODE_10 (2<<24)
+#define LCD_WINCTRL2_CKMODE_11 (3<<24)
+#define LCD_WINCTRL2_RAM_NONE (0<<21)
+#define LCD_WINCTRL2_RAM_PALETTE (1<<21)
+#define LCD_WINCTRL2_RAM_GAMMA (2<<21)
+#define LCD_WINCTRL2_RAM_BUFFER (3<<21)
+#define LCD_WINCTRL2_BX_N(N) ((N)<<8)
+#define LCD_WINCTRL2_SCX_1 (0<<4)
+#define LCD_WINCTRL2_SCX_2 (1<<4)
+#define LCD_WINCTRL2_SCX_4 (2<<4)
+#define LCD_WINCTRL2_SCY_1 (0<<0)
+#define LCD_WINCTRL2_SCY_2 (1<<0)
+#define LCD_WINCTRL2_SCY_4 (2<<0)
+
+/* lcd windows buffer control */
+#define LCD_WINBUFCTRL_DB (1<<1)
+#define LCD_WINBUFCTRL_DBN (1<<0)
+
+/* lcd_intstatus, lcd_intenable */
+#define LCD_INT_IFO (0xF<<14)
+#define LCD_INT_IFU (0xF<<10)
+#define LCD_INT_OFO (1<<9)
+#define LCD_INT_OFU (1<<8)
+#define LCD_INT_WAIT (1<<3)
+#define LCD_INT_SD (1<<2)
+#define LCD_INT_SA (1<<1)
+#define LCD_INT_SS (1<<0)
+
+/* lcd_horztiming */
+#define LCD_HORZTIMING_HND2 (0x1FF<<18)
+#define LCD_HORZTIMING_HND1 (0x1FF<<9)
+#define LCD_HORZTIMING_HPW (0x1FF<<0)
+#define LCD_HORZTIMING_HND2_N(N)(((N)-1)<<18)
+#define LCD_HORZTIMING_HND1_N(N)(((N)-1)<<9)
+#define LCD_HORZTIMING_HPW_N(N) (((N)-1)<<0)
+
+/* lcd_verttiming */
+#define LCD_VERTTIMING_VND2 (0x1FF<<18)
+#define LCD_VERTTIMING_VND1 (0x1FF<<9)
+#define LCD_VERTTIMING_VPW (0x1FF<<0)
+#define LCD_VERTTIMING_VND2_N(N)(((N)-1)<<18)
+#define LCD_VERTTIMING_VND1_N(N)(((N)-1)<<9)
+#define LCD_VERTTIMING_VPW_N(N) (((N)-1)<<0)
+
+/* lcd_clkcontrol */
+#define LCD_CLKCONTROL_EXT (1<<22)
+#define LCD_CLKCONTROL_DELAY (3<<20)
+#define LCD_CLKCONTROL_CDD (1<<19)
+#define LCD_CLKCONTROL_IB (1<<18)
+#define LCD_CLKCONTROL_IC (1<<17)
+#define LCD_CLKCONTROL_IH (1<<16)
+#define LCD_CLKCONTROL_IV (1<<15)
+#define LCD_CLKCONTROL_BF (0x1F<<10)
+#define LCD_CLKCONTROL_PCD (0x3FF<<0)
+#define LCD_CLKCONTROL_BF_N(N) (((N)-1)<<10)
+#define LCD_CLKCONTROL_PCD_N(N) ((N)<<0)
+
+/* lcd_pwmdiv */
+#define LCD_PWMDIV_EN (1<<31)
+#define LCD_PWMDIV_PWMDIV (0x1FFFF<<0)
+#define LCD_PWMDIV_PWMDIV_N(N) ((N)<<0)
+
+/* lcd_pwmhi */
+#define LCD_PWMHI_PWMHI1 (0xFFFF<<16)
+#define LCD_PWMHI_PWMHI0 (0xFFFF<<0)
+#define LCD_PWMHI_PWMHI1_N(N) ((N)<<16)
+#define LCD_PWMHI_PWMHI0_N(N) ((N)<<0)
+
+/* lcd_hwccon */
+#define LCD_HWCCON_EN (1<<0)
+
+/* lcd_cursorpos */
+#define LCD_CURSORPOS_HWCXOFF (0x1F<<27)
+#define LCD_CURSORPOS_HWCXPOS (0x07FF<<16)
+#define LCD_CURSORPOS_HWCYOFF (0x1F<<11)
+#define LCD_CURSORPOS_HWCYPOS (0x07FF<<0)
+#define LCD_CURSORPOS_HWCXOFF_N(N) ((N)<<27)
+#define LCD_CURSORPOS_HWCXPOS_N(N) ((N)<<16)
+#define LCD_CURSORPOS_HWCYOFF_N(N) ((N)<<11)
+#define LCD_CURSORPOS_HWCYPOS_N(N) ((N)<<0)
+
+/* lcd_cursorcolor */
+#define LCD_CURSORCOLOR_HWCA (0xFF<<24)
+#define LCD_CURSORCOLOR_HWCR (0xFF<<16)
+#define LCD_CURSORCOLOR_HWCG (0xFF<<8)
+#define LCD_CURSORCOLOR_HWCB (0xFF<<0)
+#define LCD_CURSORCOLOR_HWCA_N(N) ((N)<<24)
+#define LCD_CURSORCOLOR_HWCR_N(N) ((N)<<16)
+#define LCD_CURSORCOLOR_HWCG_N(N) ((N)<<8)
+#define LCD_CURSORCOLOR_HWCB_N(N) ((N)<<0)
+
+/* lcd_fifoctrl */
+#define LCD_FIFOCTRL_F3IF (1<<29)
+#define LCD_FIFOCTRL_F3REQ (0x1F<<24)
+#define LCD_FIFOCTRL_F2IF (1<<29)
+#define LCD_FIFOCTRL_F2REQ (0x1F<<16)
+#define LCD_FIFOCTRL_F1IF (1<<29)
+#define LCD_FIFOCTRL_F1REQ (0x1F<<8)
+#define LCD_FIFOCTRL_F0IF (1<<29)
+#define LCD_FIFOCTRL_F0REQ (0x1F<<0)
+#define LCD_FIFOCTRL_F3REQ_N(N) ((N-1)<<24)
+#define LCD_FIFOCTRL_F2REQ_N(N) ((N-1)<<16)
+#define LCD_FIFOCTRL_F1REQ_N(N) ((N-1)<<8)
+#define LCD_FIFOCTRL_F0REQ_N(N) ((N-1)<<0)
+
+/* lcd_outmask */
+#define LCD_OUTMASK_MASK (0x00FFFFFF)
+
+/********************************************************************/
+#endif /* _AU1200LCD_H */
+/*
+ * BRIEF MODULE DESCRIPTION
+ * Hardware definitions for the Au1200 LCD controller
+ *
+ * Copyright 2004 AMD
+ * Author: AMD
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef _AU1200LCD_H
+#define _AU1200LCD_H
+
+/********************************************************************/
+#define AU1200_LCD_ADDR 0xB5000000
+
+#define uint8 unsigned char
+#define uint32 unsigned int
+
+struct au1200_lcd {
+ volatile uint32 reserved0;
+ volatile uint32 screen;
+ volatile uint32 backcolor;
+ volatile uint32 horztiming;
+ volatile uint32 verttiming;
+ volatile uint32 clkcontrol;
+ volatile uint32 pwmdiv;
+ volatile uint32 pwmhi;
+ volatile uint32 reserved1;
+ volatile uint32 winenable;
+ volatile uint32 colorkey;
+ volatile uint32 colorkeymsk;
+ struct
+ {
+ volatile uint32 cursorctrl;
+ volatile uint32 cursorpos;
+ volatile uint32 cursorcolor0;
+ volatile uint32 cursorcolor1;
+ volatile uint32 cursorcolor2;
+ uint32 cursorcolor3;
+ } hwc;
+ volatile uint32 intstatus;
+ volatile uint32 intenable;
+ volatile uint32 outmask;
+ volatile uint32 fifoctrl;
+ uint32 reserved2[(0x0100-0x0058)/4];
+ struct
+ {
+ volatile uint32 winctrl0;
+ volatile uint32 winctrl1;
+ volatile uint32 winctrl2;
+ volatile uint32 winbuf0;
+ volatile uint32 winbuf1;
+ volatile uint32 winbufctrl;
+ uint32 winreserved0;
+ uint32 winreserved1;
+ } window[4];
+
+ uint32 reserved3[(0x0400-0x0180)/4];
+
+ volatile uint32 palette[(0x0800-0x0400)/4];
+
+ volatile uint8 cursorpattern[256];
+};
+
+/* lcd_screen */
+#define LCD_SCREEN_SEN (1<<31)
+#define LCD_SCREEN_SX (0x07FF<<19)
+#define LCD_SCREEN_SY (0x07FF<< 8)
+#define LCD_SCREEN_SWP (1<<7)
+#define LCD_SCREEN_SWD (1<<6)
+#define LCD_SCREEN_PT (7<<0)
+#define LCD_SCREEN_PT_TFT (0<<0)
+#define LCD_SCREEN_SX_N(WIDTH) ((WIDTH-1)<<19)
+#define LCD_SCREEN_SY_N(HEIGHT) ((HEIGHT-1)<<8)
+#define LCD_SCREEN_PT_CSTN (1<<0)
+#define LCD_SCREEN_PT_CDSTN (2<<0)
+#define LCD_SCREEN_PT_M8STN (3<<0)
+#define LCD_SCREEN_PT_M4STN (4<<0)
+
+/* lcd_backcolor */
+#define LCD_BACKCOLOR_SBGR (0xFF<<16)
+#define LCD_BACKCOLOR_SBGG (0xFF<<8)
+#define LCD_BACKCOLOR_SBGB (0xFF<<0)
+#define LCD_BACKCOLOR_SBGR_N(N) ((N)<<16)
+#define LCD_BACKCOLOR_SBGG_N(N) ((N)<<8)
+#define LCD_BACKCOLOR_SBGB_N(N) ((N)<<0)
+
+/* lcd_winenable */
+#define LCD_WINENABLE_WEN3 (1<<3)
+#define LCD_WINENABLE_WEN2 (1<<2)
+#define LCD_WINENABLE_WEN1 (1<<1)
+#define LCD_WINENABLE_WEN0 (1<<0)
+
+/* lcd_colorkey */
+#define LCD_COLORKEY_CKR (0xFF<<16)
+#define LCD_COLORKEY_CKG (0xFF<<8)
+#define LCD_COLORKEY_CKB (0xFF<<0)
+#define LCD_COLORKEY_CKR_N(N) ((N)<<16)
+#define LCD_COLORKEY_CKG_N(N) ((N)<<8)
+#define LCD_COLORKEY_CKB_N(N) ((N)<<0)
+
+/* lcd_colorkeymsk */
+#define LCD_COLORKEYMSK_CKMR (0xFF<<16)
+#define LCD_COLORKEYMSK_CKMG (0xFF<<8)
+#define LCD_COLORKEYMSK_CKMB (0xFF<<0)
+#define LCD_COLORKEYMSK_CKMR_N(N) ((N)<<16)
+#define LCD_COLORKEYMSK_CKMG_N(N) ((N)<<8)
+#define LCD_COLORKEYMSK_CKMB_N(N) ((N)<<0)
+
+/* lcd windows control 0 */
+#define LCD_WINCTRL0_OX (0x07FF<<21)
+#define LCD_WINCTRL0_OY (0x07FF<<10)
+#define LCD_WINCTRL0_A (0x00FF<<2)
+#define LCD_WINCTRL0_AEN (1<<1)
+#define LCD_WINCTRL0_OX_N(N) ((N)<<21)
+#define LCD_WINCTRL0_OY_N(N) ((N)<<10)
+#define LCD_WINCTRL0_A_N(N) ((N)<<2)
+
+/* lcd windows control 1 */
+#define LCD_WINCTRL1_PRI (3<<30)
+#define LCD_WINCTRL1_PIPE (1<<29)
+#define LCD_WINCTRL1_FRM (0xF<<25)
+#define LCD_WINCTRL1_CCO (1<<24)
+#define LCD_WINCTRL1_PO (3<<22)
+#define LCD_WINCTRL1_SZX (0x07FF<<11)
+#define LCD_WINCTRL1_SZY (0x07FF<<0)
+#define LCD_WINCTRL1_FRM_1BPP (0<<25)
+#define LCD_WINCTRL1_FRM_2BPP (1<<25)
+#define LCD_WINCTRL1_FRM_4BPP (2<<25)
+#define LCD_WINCTRL1_FRM_8BPP (3<<25)
+#define LCD_WINCTRL1_FRM_12BPP (4<<25)
+#define LCD_WINCTRL1_FRM_16BPP655 (5<<25)
+#define LCD_WINCTRL1_FRM_16BPP565 (6<<25)
+#define LCD_WINCTRL1_FRM_16BPP556 (7<<25)
+#define LCD_WINCTRL1_FRM_16BPPI1555 (8<<25)
+#define LCD_WINCTRL1_FRM_16BPPI5551 (9<<25)
+#define LCD_WINCTRL1_FRM_16BPPA1555 (10<<25)
+#define LCD_WINCTRL1_FRM_16BPPA5551 (11<<25)
+#define LCD_WINCTRL1_FRM_24BPP (12<<25)
+#define LCD_WINCTRL1_FRM_32BPP (13<<25)
+#define LCD_WINCTRL1_PRI_N(N) ((N)<<30)
+#define LCD_WINCTRL1_PO_00 (0<<22)
+#define LCD_WINCTRL1_PO_01 (1<<22)
+#define LCD_WINCTRL1_PO_10 (2<<22)
+#define LCD_WINCTRL1_PO_11 (3<<22)
+#define LCD_WINCTRL1_SZX_N(N) ((N-1)<<11)
+#define LCD_WINCTRL1_SZY_N(N) ((N-1)<<0)
+
+/* lcd windows control 2 */
+#define LCD_WINCTRL2_CKMODE (3<<24)
+#define LCD_WINCTRL2_DBM (1<<23)
+#define LCD_WINCTRL2_RAM (3<<21)
+#define LCD_WINCTRL2_BX (0x1FFF<<8)
+#define LCD_WINCTRL2_SCX (0xF<<4)
+#define LCD_WINCTRL2_SCY (0xF<<0)
+#define LCD_WINCTRL2_CKMODE_00 (0<<24)
+#define LCD_WINCTRL2_CKMODE_01 (1<<24)
+#define LCD_WINCTRL2_CKMODE_10 (2<<24)
+#define LCD_WINCTRL2_CKMODE_11 (3<<24)
+#define LCD_WINCTRL2_RAM_NONE (0<<21)
+#define LCD_WINCTRL2_RAM_PALETTE (1<<21)
+#define LCD_WINCTRL2_RAM_GAMMA (2<<21)
+#define LCD_WINCTRL2_RAM_BUFFER (3<<21)
+#define LCD_WINCTRL2_BX_N(N) ((N)<<8)
+#define LCD_WINCTRL2_SCX_1 (0<<4)
+#define LCD_WINCTRL2_SCX_2 (1<<4)
+#define LCD_WINCTRL2_SCX_4 (2<<4)
+#define LCD_WINCTRL2_SCY_1 (0<<0)
+#define LCD_WINCTRL2_SCY_2 (1<<0)
+#define LCD_WINCTRL2_SCY_4 (2<<0)
+
+/* lcd windows buffer control */
+#define LCD_WINBUFCTRL_DB (1<<1)
+#define LCD_WINBUFCTRL_DBN (1<<0)
+
+/* lcd_intstatus, lcd_intenable */
+#define LCD_INT_IFO (0xF<<14)
+#define LCD_INT_IFU (0xF<<10)
+#define LCD_INT_OFO (1<<9)
+#define LCD_INT_OFU (1<<8)
+#define LCD_INT_WAIT (1<<3)
+#define LCD_INT_SD (1<<2)
+#define LCD_INT_SA (1<<1)
+#define LCD_INT_SS (1<<0)
+
+/* lcd_horztiming */
+#define LCD_HORZTIMING_HND2 (0x1FF<<18)
+#define LCD_HORZTIMING_HND1 (0x1FF<<9)
+#define LCD_HORZTIMING_HPW (0x1FF<<0)
+#define LCD_HORZTIMING_HND2_N(N)(((N)-1)<<18)
+#define LCD_HORZTIMING_HND1_N(N)(((N)-1)<<9)
+#define LCD_HORZTIMING_HPW_N(N) (((N)-1)<<0)
+
+/* lcd_verttiming */
+#define LCD_VERTTIMING_VND2 (0x1FF<<18)
+#define LCD_VERTTIMING_VND1 (0x1FF<<9)
+#define LCD_VERTTIMING_VPW (0x1FF<<0)
+#define LCD_VERTTIMING_VND2_N(N)(((N)-1)<<18)
+#define LCD_VERTTIMING_VND1_N(N)(((N)-1)<<9)
+#define LCD_VERTTIMING_VPW_N(N) (((N)-1)<<0)
+
+/* lcd_clkcontrol */
+#define LCD_CLKCONTROL_EXT (1<<22)
+#define LCD_CLKCONTROL_DELAY (3<<20)
+#define LCD_CLKCONTROL_CDD (1<<19)
+#define LCD_CLKCONTROL_IB (1<<18)
+#define LCD_CLKCONTROL_IC (1<<17)
+#define LCD_CLKCONTROL_IH (1<<16)
+#define LCD_CLKCONTROL_IV (1<<15)
+#define LCD_CLKCONTROL_BF (0x1F<<10)
+#define LCD_CLKCONTROL_PCD (0x3FF<<0)
+#define LCD_CLKCONTROL_BF_N(N) (((N)-1)<<10)
+#define LCD_CLKCONTROL_PCD_N(N) ((N)<<0)
+
+/* lcd_pwmdiv */
+#define LCD_PWMDIV_EN (1<<31)
+#define LCD_PWMDIV_PWMDIV (0x1FFFF<<0)
+#define LCD_PWMDIV_PWMDIV_N(N) ((N)<<0)
+
+/* lcd_pwmhi */
+#define LCD_PWMHI_PWMHI1 (0xFFFF<<16)
+#define LCD_PWMHI_PWMHI0 (0xFFFF<<0)
+#define LCD_PWMHI_PWMHI1_N(N) ((N)<<16)
+#define LCD_PWMHI_PWMHI0_N(N) ((N)<<0)
+
+/* lcd_hwccon */
+#define LCD_HWCCON_EN (1<<0)
+
+/* lcd_cursorpos */
+#define LCD_CURSORPOS_HWCXOFF (0x1F<<27)
+#define LCD_CURSORPOS_HWCXPOS (0x07FF<<16)
+#define LCD_CURSORPOS_HWCYOFF (0x1F<<11)
+#define LCD_CURSORPOS_HWCYPOS (0x07FF<<0)
+#define LCD_CURSORPOS_HWCXOFF_N(N) ((N)<<27)
+#define LCD_CURSORPOS_HWCXPOS_N(N) ((N)<<16)
+#define LCD_CURSORPOS_HWCYOFF_N(N) ((N)<<11)
+#define LCD_CURSORPOS_HWCYPOS_N(N) ((N)<<0)
+
+/* lcd_cursorcolor */
+#define LCD_CURSORCOLOR_HWCA (0xFF<<24)
+#define LCD_CURSORCOLOR_HWCR (0xFF<<16)
+#define LCD_CURSORCOLOR_HWCG (0xFF<<8)
+#define LCD_CURSORCOLOR_HWCB (0xFF<<0)
+#define LCD_CURSORCOLOR_HWCA_N(N) ((N)<<24)
+#define LCD_CURSORCOLOR_HWCR_N(N) ((N)<<16)
+#define LCD_CURSORCOLOR_HWCG_N(N) ((N)<<8)
+#define LCD_CURSORCOLOR_HWCB_N(N) ((N)<<0)
+
+/* lcd_fifoctrl */
+#define LCD_FIFOCTRL_F3IF (1<<29)
+#define LCD_FIFOCTRL_F3REQ (0x1F<<24)
+#define LCD_FIFOCTRL_F2IF (1<<29)
+#define LCD_FIFOCTRL_F2REQ (0x1F<<16)
+#define LCD_FIFOCTRL_F1IF (1<<29)
+#define LCD_FIFOCTRL_F1REQ (0x1F<<8)
+#define LCD_FIFOCTRL_F0IF (1<<29)
+#define LCD_FIFOCTRL_F0REQ (0x1F<<0)
+#define LCD_FIFOCTRL_F3REQ_N(N) ((N-1)<<24)
+#define LCD_FIFOCTRL_F2REQ_N(N) ((N-1)<<16)
+#define LCD_FIFOCTRL_F1REQ_N(N) ((N-1)<<8)
+#define LCD_FIFOCTRL_F0REQ_N(N) ((N-1)<<0)
+
+/* lcd_outmask */
+#define LCD_OUTMASK_MASK (0x00FFFFFF)
+
+/********************************************************************/
+#endif /* _AU1200LCD_H */
unsigned char data;
};
-#define N_ELTS(x) (sizeof(x) / sizeof(x[0]))
-
static struct chips_init_reg chips_init_sr[] = {
{ 0x00, 0x03 },
{ 0x01, 0x01 },
{
int i;
- for (i = 0; i < N_ELTS(chips_init_xr); ++i)
+ for (i = 0; i < ARRAY_SIZE(chips_init_xr); ++i)
write_xr(chips_init_xr[i].addr, chips_init_xr[i].data);
outb(0x29, 0x3c2); /* set misc output reg */
- for (i = 0; i < N_ELTS(chips_init_sr); ++i)
+ for (i = 0; i < ARRAY_SIZE(chips_init_sr); ++i)
write_sr(chips_init_sr[i].addr, chips_init_sr[i].data);
- for (i = 0; i < N_ELTS(chips_init_gr); ++i)
+ for (i = 0; i < ARRAY_SIZE(chips_init_gr); ++i)
write_gr(chips_init_gr[i].addr, chips_init_gr[i].data);
- for (i = 0; i < N_ELTS(chips_init_ar); ++i)
+ for (i = 0; i < ARRAY_SIZE(chips_init_ar); ++i)
write_ar(chips_init_ar[i].addr, chips_init_ar[i].data);
- for (i = 0; i < N_ELTS(chips_init_cr); ++i)
+ for (i = 0; i < ARRAY_SIZE(chips_init_cr); ++i)
write_cr(chips_init_cr[i].addr, chips_init_cr[i].data);
- for (i = 0; i < N_ELTS(chips_init_fr); ++i)
+ for (i = 0; i < ARRAY_SIZE(chips_init_fr); ++i)
write_fr(chips_init_fr[i].addr, chips_init_fr[i].data);
}
# fi
# fi
+config VGACON_SOFT_SCROLLBACK
+ bool "Enable Scrollback Buffer in System RAM"
+ depends on VGA_CONSOLE
+ default n
+ help
+ The scrollback buffer of the standard VGA console is located in
+ the VGA RAM. The size of this RAM is fixed and is quite small.
+ If you require a larger scrollback buffer, this can be placed in
+ System RAM which is dynamically allocated during intialization.
+ Placing the scrollback buffer in System RAM will slightly slow
+ down the console.
+
+ If you want this feature, say 'Y' here and enter the amount of
+ RAM to allocate for this buffer. If unsure, say 'N'.
+
+config VGACON_SOFT_SCROLLBACK_SIZE
+ int "Scrollback Buffer Size (in KB)"
+ depends on VGACON_SOFT_SCROLLBACK
+ default "64"
+ help
+ Enter the amount of System RAM to allocate for the scrollback
+ buffer. Each 64KB will give you approximately 16 80x25
+ screenfuls of scrollback buffer
+
config VIDEO_SELECT
bool "Video mode selection support"
depends on X86 && VGA_CONSOLE
#endif
};
-#define num_fonts (sizeof(fonts)/sizeof(*fonts))
+#define num_fonts ARRAY_SIZE(fonts)
#ifdef NO_FONTS
#error No fonts configured.
newport_clear_screen(0, ystart, 1280 + 63, yend, ci);
}
-void newport_reset(void)
+static void newport_reset(void)
{
unsigned short treg;
int i;
* calculate the actual screen size by reading
* the video timing out of the VC2
*/
-void newport_get_screensize(void)
+static void newport_get_screensize(void)
{
int i, cols;
unsigned short ventry, treg;
static void vgacon_invert_region(struct vc_data *c, u16 * p, int count);
static unsigned long vgacon_uni_pagedir[2];
-
/* Description of the hardware situation */
static unsigned long vga_vram_base; /* Base of video memory */
static unsigned long vga_vram_end; /* End of video memory */
spin_unlock_irqrestore(&vga_lock, flags);
}
+static inline void vga_set_mem_top(struct vc_data *c)
+{
+ write_vga(12, (c->vc_visible_origin - vga_vram_base) / 2);
+}
+
+#ifdef CONFIG_VGACON_SOFT_SCROLLBACK
+#include <linux/bootmem.h>
+/* software scrollback */
+static void *vgacon_scrollback;
+static int vgacon_scrollback_tail;
+static int vgacon_scrollback_size;
+static int vgacon_scrollback_rows;
+static int vgacon_scrollback_cnt;
+static int vgacon_scrollback_cur;
+static int vgacon_scrollback_save;
+static int vgacon_scrollback_restore;
+
+static void vgacon_scrollback_init(int pitch)
+{
+ int rows = CONFIG_VGACON_SOFT_SCROLLBACK_SIZE * 1024/pitch;
+
+ if (vgacon_scrollback) {
+ vgacon_scrollback_cnt = 0;
+ vgacon_scrollback_tail = 0;
+ vgacon_scrollback_cur = 0;
+ vgacon_scrollback_rows = rows - 1;
+ vgacon_scrollback_size = rows * pitch;
+ }
+}
+
+static void __init vgacon_scrollback_startup(void)
+{
+ vgacon_scrollback = alloc_bootmem(CONFIG_VGACON_SOFT_SCROLLBACK_SIZE
+ * 1024);
+ vgacon_scrollback_init(vga_video_num_columns * 2);
+}
+
+static void vgacon_scrollback_update(struct vc_data *c, int t, int count)
+{
+ void *p;
+
+ if (!vgacon_scrollback_size || c->vc_num != fg_console)
+ return;
+
+ p = (void *) (c->vc_origin + t * c->vc_size_row);
+
+ while (count--) {
+ scr_memcpyw(vgacon_scrollback + vgacon_scrollback_tail,
+ p, c->vc_size_row);
+ vgacon_scrollback_cnt++;
+ p += c->vc_size_row;
+ vgacon_scrollback_tail += c->vc_size_row;
+
+ if (vgacon_scrollback_tail >= vgacon_scrollback_size)
+ vgacon_scrollback_tail = 0;
+
+ if (vgacon_scrollback_cnt > vgacon_scrollback_rows)
+ vgacon_scrollback_cnt = vgacon_scrollback_rows;
+
+ vgacon_scrollback_cur = vgacon_scrollback_cnt;
+ }
+}
+
+static void vgacon_restore_screen(struct vc_data *c)
+{
+ vgacon_scrollback_save = 0;
+
+ if (!vga_is_gfx && !vgacon_scrollback_restore) {
+ scr_memcpyw((u16 *) c->vc_origin, (u16 *) c->vc_screenbuf,
+ c->vc_screenbuf_size > vga_vram_size ?
+ vga_vram_size : c->vc_screenbuf_size);
+ vgacon_scrollback_restore = 1;
+ vgacon_scrollback_cur = vgacon_scrollback_cnt;
+ }
+}
+
+static int vgacon_scrolldelta(struct vc_data *c, int lines)
+{
+ int start, end, count, soff, diff;
+ void *d, *s;
+
+ if (!lines) {
+ c->vc_visible_origin = c->vc_origin;
+ vga_set_mem_top(c);
+ return 1;
+ }
+
+ if (!vgacon_scrollback)
+ return 1;
+
+ if (!vgacon_scrollback_save) {
+ vgacon_cursor(c, CM_ERASE);
+ vgacon_save_screen(c);
+ vgacon_scrollback_save = 1;
+ }
+
+ vgacon_scrollback_restore = 0;
+ start = vgacon_scrollback_cur + lines;
+ end = start + abs(lines);
+
+ if (start < 0)
+ start = 0;
+
+ if (start > vgacon_scrollback_cnt)
+ start = vgacon_scrollback_cnt;
+
+ if (end < 0)
+ end = 0;
+
+ if (end > vgacon_scrollback_cnt)
+ end = vgacon_scrollback_cnt;
+
+ vgacon_scrollback_cur = start;
+ count = end - start;
+ soff = vgacon_scrollback_tail - ((vgacon_scrollback_cnt - end) *
+ c->vc_size_row);
+ soff -= count * c->vc_size_row;
+
+ if (soff < 0)
+ soff += vgacon_scrollback_size;
+
+ count = vgacon_scrollback_cnt - start;
+
+ if (count > c->vc_rows)
+ count = c->vc_rows;
+
+ diff = c->vc_rows - count;
+
+ d = (void *) c->vc_origin;
+ s = (void *) c->vc_screenbuf;
+
+ while (count--) {
+ scr_memcpyw(d, vgacon_scrollback + soff, c->vc_size_row);
+ d += c->vc_size_row;
+ soff += c->vc_size_row;
+
+ if (soff >= vgacon_scrollback_size)
+ soff = 0;
+ }
+
+ if (diff == c->vc_rows) {
+ vgacon_cursor(c, CM_MOVE);
+ } else {
+ while (diff--) {
+ scr_memcpyw(d, s, c->vc_size_row);
+ d += c->vc_size_row;
+ s += c->vc_size_row;
+ }
+ }
+
+ return 1;
+}
+#else
+#define vgacon_scrollback_startup(...) do { } while (0)
+#define vgacon_scrollback_init(...) do { } while (0)
+#define vgacon_scrollback_update(...) do { } while (0)
+
+static void vgacon_restore_screen(struct vc_data *c)
+{
+ if (c->vc_origin != c->vc_visible_origin)
+ vgacon_scrolldelta(c, 0);
+}
+
+static int vgacon_scrolldelta(struct vc_data *c, int lines)
+{
+ if (!lines) /* Turn scrollback off */
+ c->vc_visible_origin = c->vc_origin;
+ else {
+ int margin = c->vc_size_row * 4;
+ int ul, we, p, st;
+
+ if (vga_rolled_over >
+ (c->vc_scr_end - vga_vram_base) + margin) {
+ ul = c->vc_scr_end - vga_vram_base;
+ we = vga_rolled_over + c->vc_size_row;
+ } else {
+ ul = 0;
+ we = vga_vram_size;
+ }
+ p = (c->vc_visible_origin - vga_vram_base - ul + we) % we +
+ lines * c->vc_size_row;
+ st = (c->vc_origin - vga_vram_base - ul + we) % we;
+ if (st < 2 * margin)
+ margin = 0;
+ if (p < margin)
+ p = 0;
+ if (p > st - margin)
+ p = st;
+ c->vc_visible_origin = vga_vram_base + (p + ul) % we;
+ }
+ vga_set_mem_top(c);
+ return 1;
+}
+#endif /* CONFIG_VGACON_SOFT_SCROLLBACK */
+
static const char __init *vgacon_startup(void)
{
const char *display_desc = NULL;
vgacon_xres = ORIG_VIDEO_COLS * VGA_FONTWIDTH;
vgacon_yres = vga_scan_lines;
-
+ vgacon_scrollback_startup();
return display_desc;
}
con_set_default_unimap(c);
}
-static inline void vga_set_mem_top(struct vc_data *c)
-{
- write_vga(12, (c->vc_visible_origin - vga_vram_base) / 2);
-}
-
static void vgacon_deinit(struct vc_data *c)
{
/* When closing the last console, reset video origin */
cursor_size_lastto = to;
spin_lock_irqsave(&vga_lock, flags);
- outb_p(0x0a, vga_video_port_reg); /* Cursor start */
- curs = inb_p(vga_video_port_val);
- outb_p(0x0b, vga_video_port_reg); /* Cursor end */
- cure = inb_p(vga_video_port_val);
+ if (vga_video_type >= VIDEO_TYPE_VGAC) {
+ outb_p(VGA_CRTC_CURSOR_START, vga_video_port_reg);
+ curs = inb_p(vga_video_port_val);
+ outb_p(VGA_CRTC_CURSOR_END, vga_video_port_reg);
+ cure = inb_p(vga_video_port_val);
+ } else {
+ curs = 0;
+ cure = 0;
+ }
curs = (curs & 0xc0) | from;
cure = (cure & 0xe0) | to;
- outb_p(0x0a, vga_video_port_reg); /* Cursor start */
+ outb_p(VGA_CRTC_CURSOR_START, vga_video_port_reg);
outb_p(curs, vga_video_port_val);
- outb_p(0x0b, vga_video_port_reg); /* Cursor end */
+ outb_p(VGA_CRTC_CURSOR_END, vga_video_port_reg);
outb_p(cure, vga_video_port_val);
spin_unlock_irqrestore(&vga_lock, flags);
}
static void vgacon_cursor(struct vc_data *c, int mode)
{
- if (c->vc_origin != c->vc_visible_origin)
- vgacon_scrolldelta(c, 0);
+ vgacon_restore_screen(c);
+
switch (mode) {
case CM_ERASE:
write_vga(14, (c->vc_pos - vga_vram_base) / 2);
- vgacon_set_cursor_size(c->vc_x, 31, 30);
+ if (vga_video_type >= VIDEO_TYPE_VGAC)
+ vgacon_set_cursor_size(c->vc_x, 31, 30);
+ else
+ vgacon_set_cursor_size(c->vc_x, 31, 31);
break;
case CM_MOVE:
10 ? 1 : 2));
break;
case CUR_NONE:
- vgacon_set_cursor_size(c->vc_x, 31, 30);
+ if (vga_video_type >= VIDEO_TYPE_VGAC)
+ vgacon_set_cursor_size(c->vc_x, 31, 30);
+ else
+ vgacon_set_cursor_size(c->vc_x, 31, 31);
break;
default:
vgacon_set_cursor_size(c->vc_x, 1,
vgacon_doresize(c, c->vc_cols, c->vc_rows);
}
+ vgacon_scrollback_init(c->vc_size_row);
return 0; /* Redrawing not needed */
}
return 0;
}
-static int vgacon_scrolldelta(struct vc_data *c, int lines)
-{
- if (!lines) /* Turn scrollback off */
- c->vc_visible_origin = c->vc_origin;
- else {
- int margin = c->vc_size_row * 4;
- int ul, we, p, st;
-
- if (vga_rolled_over >
- (c->vc_scr_end - vga_vram_base) + margin) {
- ul = c->vc_scr_end - vga_vram_base;
- we = vga_rolled_over + c->vc_size_row;
- } else {
- ul = 0;
- we = vga_vram_size;
- }
- p = (c->vc_visible_origin - vga_vram_base - ul + we) % we +
- lines * c->vc_size_row;
- st = (c->vc_origin - vga_vram_base - ul + we) % we;
- if (st < 2 * margin)
- margin = 0;
- if (p < margin)
- p = 0;
- if (p > st - margin)
- p = st;
- c->vc_visible_origin = vga_vram_base + (p + ul) % we;
- }
- vga_set_mem_top(c);
- return 1;
-}
-
static int vgacon_set_origin(struct vc_data *c)
{
if (vga_is_gfx || /* We don't play origin tricks in graphic modes */
if (t || b != c->vc_rows || vga_is_gfx)
return 0;
- if (c->vc_origin != c->vc_visible_origin)
- vgacon_scrolldelta(c, 0);
-
if (!vga_hardscroll_enabled || lines >= c->vc_rows / 2)
return 0;
+ vgacon_restore_screen(c);
oldo = c->vc_origin;
delta = lines * c->vc_size_row;
if (dir == SM_UP) {
+ vgacon_scrollback_update(c, t, lines);
if (c->vc_scr_end + delta >= vga_vram_end) {
scr_memcpyw((u16 *) vga_vram_base,
(u16 *) (oldo + delta),
* Allocates memory for a colormap @cmap. @len is the
* number of entries in the palette.
*
- * Returns -1 errno on error, or zero on success.
+ * Returns negative errno on error, or zero on success.
*
*/
fail:
fb_dealloc_cmap(cmap);
- return -1;
+ return -ENOMEM;
}
/**
#define FBPIXMAPSIZE (1024 * 8)
-static struct notifier_block *fb_notifier_list;
+static BLOCKING_NOTIFIER_HEAD(fb_notifier_list);
struct fb_info *registered_fb[FB_MAX];
int num_registered_fb;
event.info = info;
event.data = &mode1;
- ret = notifier_call_chain(&fb_notifier_list,
+ ret = blocking_notifier_call_chain(&fb_notifier_list,
FB_EVENT_MODE_DELETE, &event);
}
info->flags &= ~FBINFO_MISC_USEREVENT;
event.info = info;
- notifier_call_chain(&fb_notifier_list, evnt,
- &event);
+ blocking_notifier_call_chain(&fb_notifier_list,
+ evnt, &event);
}
}
}
event.info = info;
event.data = ␣
- notifier_call_chain(&fb_notifier_list, FB_EVENT_BLANK, &event);
+ blocking_notifier_call_chain(&fb_notifier_list,
+ FB_EVENT_BLANK, &event);
}
return ret;
con2fb.framebuffer = -1;
event.info = info;
event.data = &con2fb;
- notifier_call_chain(&fb_notifier_list,
+ blocking_notifier_call_chain(&fb_notifier_list,
FB_EVENT_GET_CONSOLE_MAP, &event);
return copy_to_user(argp, &con2fb,
sizeof(con2fb)) ? -EFAULT : 0;
return -EINVAL;
event.info = info;
event.data = &con2fb;
- return notifier_call_chain(&fb_notifier_list,
+ return blocking_notifier_call_chain(&fb_notifier_list,
FB_EVENT_SET_CONSOLE_MAP,
&event);
case FBIOBLANK:
devfs_mk_cdev(MKDEV(FB_MAJOR, i),
S_IFCHR | S_IRUGO | S_IWUGO, "fb/%d", i);
event.info = fb_info;
- notifier_call_chain(&fb_notifier_list,
+ blocking_notifier_call_chain(&fb_notifier_list,
FB_EVENT_FB_REGISTERED, &event);
return 0;
}
*/
int fb_register_client(struct notifier_block *nb)
{
- return notifier_chain_register(&fb_notifier_list, nb);
+ return blocking_notifier_chain_register(&fb_notifier_list, nb);
}
/**
*/
int fb_unregister_client(struct notifier_block *nb)
{
- return notifier_chain_unregister(&fb_notifier_list, nb);
+ return blocking_notifier_chain_unregister(&fb_notifier_list, nb);
}
/**
event.info = info;
if (state) {
- notifier_call_chain(&fb_notifier_list, FB_EVENT_SUSPEND, &event);
+ blocking_notifier_call_chain(&fb_notifier_list,
+ FB_EVENT_SUSPEND, &event);
info->state = FBINFO_STATE_SUSPENDED;
} else {
info->state = FBINFO_STATE_RUNNING;
- notifier_call_chain(&fb_notifier_list, FB_EVENT_RESUME, &event);
+ blocking_notifier_call_chain(&fb_notifier_list,
+ FB_EVENT_RESUME, &event);
}
}
if (!list_empty(&info->modelist)) {
event.info = info;
- err = notifier_call_chain(&fb_notifier_list,
+ err = blocking_notifier_call_chain(&fb_notifier_list,
FB_EVENT_NEW_MODELIST,
&event);
}
evnt.info = info;
evnt.data = data;
- return notifier_call_chain(&fb_notifier_list, event, &evnt);
+ return blocking_notifier_call_chain(&fb_notifier_list, event, &evnt);
}
EXPORT_SYMBOL(fb_con_duit);
-EINVAL : 0;
}
-#if defined(__i386__)
+#if defined(CONFIG_FB_FIRMWARE_EDID) && defined(__i386__)
#include <linux/pci.h>
/*
{
return NULL;
}
-#endif /* _i386_ */
+#endif
+EXPORT_SYMBOL(fb_firmware_edid);
EXPORT_SYMBOL(fb_parse_edid);
EXPORT_SYMBOL(fb_edid_to_monspecs);
-EXPORT_SYMBOL(fb_firmware_edid);
EXPORT_SYMBOL(fb_get_mode);
EXPORT_SYMBOL(fb_validate_mode);
EXPORT_SYMBOL(fb_destroy_modedb);
fb_copy_cmap(&umap, &fb_info->cmap);
fb_dealloc_cmap(&umap);
- return rc;
+ return rc ?: count;
}
for (i = 0; i < length; i++) {
u16 red, blue, green, tsp;
if (transp)
fb_info->cmap.transp[i] = tsp;
}
- return 0;
+ return count;
}
static ssize_t show_cmap(struct class_device *class_device, char *buf)
Say 'Y' here to allow you to select framebuffer drivers for
the AMD Geode family of processors.
+config FB_GEODE_GX
+ tristate "AMD Geode GX framebuffer support (EXPERIMENTAL)"
+ depends on FB && FB_GEODE && EXPERIMENTAL
+ select FB_CFB_FILLRECT
+ select FB_CFB_COPYAREA
+ select FB_CFB_IMAGEBLIT
+ ---help---
+ Framebuffer driver for the display controller integrated into the
+ AMD Geode GX processors.
+
+ To compile this driver as a module, choose M here: the module will be
+ called gxfb.
+
+ If unsure, say N.
+
config FB_GEODE_GX1
tristate "AMD Geode GX1 framebuffer support (EXPERIMENTAL)"
- depends on FB_GEODE && EXPERIMENTAL
+ depends on FB && FB_GEODE && EXPERIMENTAL
select FB_CFB_FILLRECT
select FB_CFB_COPYAREA
select FB_CFB_IMAGEBLIT
# Makefile for the Geode family framebuffer drivers
obj-$(CONFIG_FB_GEODE_GX1) += gx1fb.o
+obj-$(CONFIG_FB_GEODE_GX) += gxfb.o
-gx1fb-objs := gx1fb_core.o display_gx1.o video_cs5530.o
+gx1fb-objs := gx1fb_core.o display_gx1.o video_cs5530.o
+gxfb-objs := gxfb_core.o display_gx.o video_gx.o
--- /dev/null
+/*
+ * Geode GX display controller.
+ *
+ * Copyright (C) 2005 Arcom Control Systems Ltd.
+ *
+ * Portions from AMD's original 2.4 driver:
+ * Copyright (C) 2004 Advanced Micro Devices, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by * the
+ * Free Software Foundation; either version 2 of the License, or * (at your
+ * option) any later version.
+ */
+#include <linux/spinlock.h>
+#include <linux/fb.h>
+#include <linux/delay.h>
+#include <asm/io.h>
+#include <asm/div64.h>
+#include <asm/delay.h>
+
+#include "geodefb.h"
+#include "display_gx.h"
+
+int gx_frame_buffer_size(void)
+{
+ /* Assuming 16 MiB. */
+ return 16*1024*1024;
+}
+
+int gx_line_delta(int xres, int bpp)
+{
+ /* Must be a multiple of 8 bytes. */
+ return (xres * (bpp >> 3) + 7) & ~0x7;
+}
+
+static void gx_set_mode(struct fb_info *info)
+{
+ struct geodefb_par *par = info->par;
+ u32 gcfg, dcfg;
+ int hactive, hblankstart, hsyncstart, hsyncend, hblankend, htotal;
+ int vactive, vblankstart, vsyncstart, vsyncend, vblankend, vtotal;
+
+ /* Unlock the display controller registers. */
+ readl(par->dc_regs + DC_UNLOCK);
+ writel(DC_UNLOCK_CODE, par->dc_regs + DC_UNLOCK);
+
+ gcfg = readl(par->dc_regs + DC_GENERAL_CFG);
+ dcfg = readl(par->dc_regs + DC_DISPLAY_CFG);
+
+ /* Disable the timing generator. */
+ dcfg &= ~(DC_DCFG_TGEN);
+ writel(dcfg, par->dc_regs + DC_DISPLAY_CFG);
+
+ /* Wait for pending memory requests before disabling the FIFO load. */
+ udelay(100);
+
+ /* Disable FIFO load and compression. */
+ gcfg &= ~(DC_GCFG_DFLE | DC_GCFG_CMPE | DC_GCFG_DECE);
+ writel(gcfg, par->dc_regs + DC_GENERAL_CFG);
+
+ /* Setup DCLK and its divisor. */
+ par->vid_ops->set_dclk(info);
+
+ /*
+ * Setup new mode.
+ */
+
+ /* Clear all unused feature bits. */
+ gcfg &= DC_GCFG_YUVM | DC_GCFG_VDSE;
+ dcfg = 0;
+
+ /* Set FIFO priority (default 6/5) and enable. */
+ /* FIXME: increase fifo priority for 1280x1024 and higher modes? */
+ gcfg |= (6 << DC_GCFG_DFHPEL_POS) | (5 << DC_GCFG_DFHPSL_POS) | DC_GCFG_DFLE;
+
+ /* Framebuffer start offset. */
+ writel(0, par->dc_regs + DC_FB_ST_OFFSET);
+
+ /* Line delta and line buffer length. */
+ writel(info->fix.line_length >> 3, par->dc_regs + DC_GFX_PITCH);
+ writel(((info->var.xres * info->var.bits_per_pixel/8) >> 3) + 2,
+ par->dc_regs + DC_LINE_SIZE);
+
+ /* Enable graphics and video data and unmask address lines. */
+ dcfg |= DC_DCFG_GDEN | DC_DCFG_VDEN | DC_DCFG_A20M | DC_DCFG_A18M;
+
+ /* Set pixel format. */
+ switch (info->var.bits_per_pixel) {
+ case 8:
+ dcfg |= DC_DCFG_DISP_MODE_8BPP;
+ break;
+ case 16:
+ dcfg |= DC_DCFG_DISP_MODE_16BPP;
+ dcfg |= DC_DCFG_16BPP_MODE_565;
+ break;
+ case 32:
+ dcfg |= DC_DCFG_DISP_MODE_24BPP;
+ dcfg |= DC_DCFG_PALB;
+ break;
+ }
+
+ /* Enable timing generator. */
+ dcfg |= DC_DCFG_TGEN;
+
+ /* Horizontal and vertical timings. */
+ hactive = info->var.xres;
+ hblankstart = hactive;
+ hsyncstart = hblankstart + info->var.right_margin;
+ hsyncend = hsyncstart + info->var.hsync_len;
+ hblankend = hsyncend + info->var.left_margin;
+ htotal = hblankend;
+
+ vactive = info->var.yres;
+ vblankstart = vactive;
+ vsyncstart = vblankstart + info->var.lower_margin;
+ vsyncend = vsyncstart + info->var.vsync_len;
+ vblankend = vsyncend + info->var.upper_margin;
+ vtotal = vblankend;
+
+ writel((hactive - 1) | ((htotal - 1) << 16), par->dc_regs + DC_H_ACTIVE_TIMING);
+ writel((hblankstart - 1) | ((hblankend - 1) << 16), par->dc_regs + DC_H_BLANK_TIMING);
+ writel((hsyncstart - 1) | ((hsyncend - 1) << 16), par->dc_regs + DC_H_SYNC_TIMING);
+
+ writel((vactive - 1) | ((vtotal - 1) << 16), par->dc_regs + DC_V_ACTIVE_TIMING);
+ writel((vblankstart - 1) | ((vblankend - 1) << 16), par->dc_regs + DC_V_BLANK_TIMING);
+ writel((vsyncstart - 1) | ((vsyncend - 1) << 16), par->dc_regs + DC_V_SYNC_TIMING);
+
+ /* Write final register values. */
+ writel(dcfg, par->dc_regs + DC_DISPLAY_CFG);
+ writel(gcfg, par->dc_regs + DC_GENERAL_CFG);
+
+ par->vid_ops->configure_display(info);
+
+ /* Relock display controller registers */
+ writel(0, par->dc_regs + DC_UNLOCK);
+}
+
+static void gx_set_hw_palette_reg(struct fb_info *info, unsigned regno,
+ unsigned red, unsigned green, unsigned blue)
+{
+ struct geodefb_par *par = info->par;
+ int val;
+
+ /* Hardware palette is in RGB 8-8-8 format. */
+ val = (red << 8) & 0xff0000;
+ val |= (green) & 0x00ff00;
+ val |= (blue >> 8) & 0x0000ff;
+
+ writel(regno, par->dc_regs + DC_PAL_ADDRESS);
+ writel(val, par->dc_regs + DC_PAL_DATA);
+}
+
+struct geode_dc_ops gx_dc_ops = {
+ .set_mode = gx_set_mode,
+ .set_palette_reg = gx_set_hw_palette_reg,
+};
--- /dev/null
+/*
+ * Geode GX display controller
+ *
+ * Copyright (C) 2006 Arcom Control Systems Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+#ifndef __DISPLAY_GX_H__
+#define __DISPLAY_GX_H__
+
+int gx_frame_buffer_size(void);
+int gx_line_delta(int xres, int bpp);
+
+extern struct geode_dc_ops gx_dc_ops;
+
+/* Display controller registers */
+
+#define DC_UNLOCK 0x00
+# define DC_UNLOCK_CODE 0x00004758
+
+#define DC_GENERAL_CFG 0x04
+# define DC_GCFG_DFLE 0x00000001
+# define DC_GCFG_CURE 0x00000002
+# define DC_GCFG_ICNE 0x00000004
+# define DC_GCFG_VIDE 0x00000008
+# define DC_GCFG_CMPE 0x00000020
+# define DC_GCFG_DECE 0x00000040
+# define DC_GCFG_VGAE 0x00000080
+# define DC_GCFG_DFHPSL_MASK 0x00000F00
+# define DC_GCFG_DFHPSL_POS 8
+# define DC_GCFG_DFHPEL_MASK 0x0000F000
+# define DC_GCFG_DFHPEL_POS 12
+# define DC_GCFG_STFM 0x00010000
+# define DC_GCFG_FDTY 0x00020000
+# define DC_GCFG_VGAFT 0x00040000
+# define DC_GCFG_VDSE 0x00080000
+# define DC_GCFG_YUVM 0x00100000
+# define DC_GCFG_VFSL 0x00800000
+# define DC_GCFG_SIGE 0x01000000
+# define DC_GCFG_SGRE 0x02000000
+# define DC_GCFG_SGFR 0x04000000
+# define DC_GCFG_CRC_MODE 0x08000000
+# define DC_GCFG_DIAG 0x10000000
+# define DC_GCFG_CFRW 0x20000000
+
+#define DC_DISPLAY_CFG 0x08
+# define DC_DCFG_TGEN 0x00000001
+# define DC_DCFG_GDEN 0x00000008
+# define DC_DCFG_VDEN 0x00000010
+# define DC_DCFG_TRUP 0x00000040
+# define DC_DCFG_DISP_MODE_MASK 0x00000300
+# define DC_DCFG_DISP_MODE_8BPP 0x00000000
+# define DC_DCFG_DISP_MODE_16BPP 0x00000100
+# define DC_DCFG_DISP_MODE_24BPP 0x00000200
+# define DC_DCFG_16BPP_MODE_MASK 0x00000c00
+# define DC_DCFG_16BPP_MODE_565 0x00000000
+# define DC_DCFG_16BPP_MODE_555 0x00000100
+# define DC_DCFG_16BPP_MODE_444 0x00000200
+# define DC_DCFG_DCEN 0x00080000
+# define DC_DCFG_PALB 0x02000000
+# define DC_DCFG_FRLK 0x04000000
+# define DC_DCFG_VISL 0x08000000
+# define DC_DCFG_FRSL 0x20000000
+# define DC_DCFG_A18M 0x40000000
+# define DC_DCFG_A20M 0x80000000
+
+#define DC_FB_ST_OFFSET 0x10
+
+#define DC_LINE_SIZE 0x30
+# define DC_LINE_SIZE_FB_LINE_SIZE_MASK 0x000007ff
+# define DC_LINE_SIZE_FB_LINE_SIZE_POS 0
+# define DC_LINE_SIZE_CB_LINE_SIZE_MASK 0x007f0000
+# define DC_LINE_SIZE_CB_LINE_SIZE_POS 16
+# define DC_LINE_SIZE_VID_LINE_SIZE_MASK 0xff000000
+# define DC_LINE_SIZE_VID_LINE_SIZE_POS 24
+
+#define DC_GFX_PITCH 0x34
+# define DC_GFX_PITCH_FB_PITCH_MASK 0x0000ffff
+# define DC_GFX_PITCH_FB_PITCH_POS 0
+# define DC_GFX_PITCH_CB_PITCH_MASK 0xffff0000
+# define DC_GFX_PITCH_CB_PITCH_POS 16
+
+#define DC_H_ACTIVE_TIMING 0x40
+#define DC_H_BLANK_TIMING 0x44
+#define DC_H_SYNC_TIMING 0x48
+#define DC_V_ACTIVE_TIMING 0x50
+#define DC_V_BLANK_TIMING 0x54
+#define DC_V_SYNC_TIMING 0x58
+
+#define DC_PAL_ADDRESS 0x70
+#define DC_PAL_DATA 0x74
+
+#endif /* !__DISPLAY_GX1_H__ */
--- /dev/null
+/*
+ * Geode GX framebuffer driver.
+ *
+ * Copyright (C) 2006 Arcom Control Systems Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ *
+ * This driver assumes that the BIOS has created a virtual PCI device header
+ * for the video device. The PCI header is assumed to contain the following
+ * BARs:
+ *
+ * BAR0 - framebuffer memory
+ * BAR1 - graphics processor registers
+ * BAR2 - display controller registers
+ * BAR3 - video processor and flat panel control registers.
+ *
+ * 16 MiB of framebuffer memory is assumed to be available.
+ */
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/tty.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/fb.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+
+#include "geodefb.h"
+#include "display_gx.h"
+#include "video_gx.h"
+
+static char mode_option[32] = "640x480-16@60";
+
+/* Modes relevant to the GX (taken from modedb.c) */
+static const struct fb_videomode __initdata gx_modedb[] = {
+ /* 640x480-60 VESA */
+ { NULL, 60, 640, 480, 39682, 48, 16, 33, 10, 96, 2,
+ 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+ /* 640x480-75 VESA */
+ { NULL, 75, 640, 480, 31746, 120, 16, 16, 01, 64, 3,
+ 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+ /* 640x480-85 VESA */
+ { NULL, 85, 640, 480, 27777, 80, 56, 25, 01, 56, 3,
+ 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+ /* 800x600-60 VESA */
+ { NULL, 60, 800, 600, 25000, 88, 40, 23, 01, 128, 4,
+ FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+ FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+ /* 800x600-75 VESA */
+ { NULL, 75, 800, 600, 20202, 160, 16, 21, 01, 80, 3,
+ FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+ FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+ /* 800x600-85 VESA */
+ { NULL, 85, 800, 600, 17761, 152, 32, 27, 01, 64, 3,
+ FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+ FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+ /* 1024x768-60 VESA */
+ { NULL, 60, 1024, 768, 15384, 160, 24, 29, 3, 136, 6,
+ 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+ /* 1024x768-75 VESA */
+ { NULL, 75, 1024, 768, 12690, 176, 16, 28, 1, 96, 3,
+ FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+ FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+ /* 1024x768-85 VESA */
+ { NULL, 85, 1024, 768, 10582, 208, 48, 36, 1, 96, 3,
+ FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+ FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+ /* 1280x960-60 VESA */
+ { NULL, 60, 1280, 960, 9259, 312, 96, 36, 1, 112, 3,
+ FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+ FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+ /* 1280x960-85 VESA */
+ { NULL, 85, 1280, 960, 6734, 224, 64, 47, 1, 160, 3,
+ FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+ FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+ /* 1280x1024-60 VESA */
+ { NULL, 60, 1280, 1024, 9259, 248, 48, 38, 1, 112, 3,
+ FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+ FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+ /* 1280x1024-75 VESA */
+ { NULL, 75, 1280, 1024, 7407, 248, 16, 38, 1, 144, 3,
+ FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+ FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+ /* 1280x1024-85 VESA */
+ { NULL, 85, 1280, 1024, 6349, 224, 64, 44, 1, 160, 3,
+ FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+ FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+ /* 1600x1200-60 VESA */
+ { NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3,
+ FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+ FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+ /* 1600x1200-75 VESA */
+ { NULL, 75, 1600, 1200, 4938, 304, 64, 46, 1, 192, 3,
+ FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+ FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+ /* 1600x1200-85 VESA */
+ { NULL, 85, 1600, 1200, 4357, 304, 64, 46, 1, 192, 3,
+ FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+ FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+};
+
+static int gxfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
+{
+ if (var->xres > 1600 || var->yres > 1200)
+ return -EINVAL;
+ if ((var->xres > 1280 || var->yres > 1024) && var->bits_per_pixel > 16)
+ return -EINVAL;
+
+ if (var->bits_per_pixel == 32) {
+ var->red.offset = 16; var->red.length = 8;
+ var->green.offset = 8; var->green.length = 8;
+ var->blue.offset = 0; var->blue.length = 8;
+ } else if (var->bits_per_pixel == 16) {
+ var->red.offset = 11; var->red.length = 5;
+ var->green.offset = 5; var->green.length = 6;
+ var->blue.offset = 0; var->blue.length = 5;
+ } else if (var->bits_per_pixel == 8) {
+ var->red.offset = 0; var->red.length = 8;
+ var->green.offset = 0; var->green.length = 8;
+ var->blue.offset = 0; var->blue.length = 8;
+ } else
+ return -EINVAL;
+ var->transp.offset = 0; var->transp.length = 0;
+
+ /* Enough video memory? */
+ if (gx_line_delta(var->xres, var->bits_per_pixel) * var->yres > info->fix.smem_len)
+ return -EINVAL;
+
+ /* FIXME: Check timing parameters here? */
+
+ return 0;
+}
+
+static int gxfb_set_par(struct fb_info *info)
+{
+ struct geodefb_par *par = info->par;
+
+ if (info->var.bits_per_pixel > 8) {
+ info->fix.visual = FB_VISUAL_TRUECOLOR;
+ fb_dealloc_cmap(&info->cmap);
+ } else {
+ info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
+ fb_alloc_cmap(&info->cmap, 1<<info->var.bits_per_pixel, 0);
+ }
+
+ info->fix.line_length = gx_line_delta(info->var.xres, info->var.bits_per_pixel);
+
+ par->dc_ops->set_mode(info);
+
+ return 0;
+}
+
+static inline u_int chan_to_field(u_int chan, struct fb_bitfield *bf)
+{
+ chan &= 0xffff;
+ chan >>= 16 - bf->length;
+ return chan << bf->offset;
+}
+
+static int gxfb_setcolreg(unsigned regno, unsigned red, unsigned green,
+ unsigned blue, unsigned transp,
+ struct fb_info *info)
+{
+ struct geodefb_par *par = info->par;
+
+ if (info->var.grayscale) {
+ /* grayscale = 0.30*R + 0.59*G + 0.11*B */
+ red = green = blue = (red * 77 + green * 151 + blue * 28) >> 8;
+ }
+
+ /* Truecolor has hardware independent palette */
+ if (info->fix.visual == FB_VISUAL_TRUECOLOR) {
+ u32 *pal = info->pseudo_palette;
+ u32 v;
+
+ if (regno >= 16)
+ return -EINVAL;
+
+ v = chan_to_field(red, &info->var.red);
+ v |= chan_to_field(green, &info->var.green);
+ v |= chan_to_field(blue, &info->var.blue);
+
+ pal[regno] = v;
+ } else {
+ if (regno >= 256)
+ return -EINVAL;
+
+ par->dc_ops->set_palette_reg(info, regno, red, green, blue);
+ }
+
+ return 0;
+}
+
+static int gxfb_blank(int blank_mode, struct fb_info *info)
+{
+ struct geodefb_par *par = info->par;
+
+ return par->vid_ops->blank_display(info, blank_mode);
+}
+
+static int __init gxfb_map_video_memory(struct fb_info *info, struct pci_dev *dev)
+{
+ struct geodefb_par *par = info->par;
+ int fb_len;
+ int ret;
+
+ ret = pci_enable_device(dev);
+ if (ret < 0)
+ return ret;
+
+ ret = pci_request_region(dev, 3, "gxfb (video processor)");
+ if (ret < 0)
+ return ret;
+ par->vid_regs = ioremap(pci_resource_start(dev, 3),
+ pci_resource_len(dev, 3));
+ if (!par->vid_regs)
+ return -ENOMEM;
+
+ ret = pci_request_region(dev, 2, "gxfb (display controller)");
+ if (ret < 0)
+ return ret;
+ par->dc_regs = ioremap(pci_resource_start(dev, 2), pci_resource_len(dev, 2));
+ if (!par->dc_regs)
+ return -ENOMEM;
+
+ ret = pci_request_region(dev, 0, "gxfb (framebuffer)");
+ if (ret < 0)
+ return ret;
+ if ((fb_len = gx_frame_buffer_size()) < 0)
+ return -ENOMEM;
+ info->fix.smem_start = pci_resource_start(dev, 0);
+ info->fix.smem_len = fb_len;
+ info->screen_base = ioremap(info->fix.smem_start, info->fix.smem_len);
+ if (!info->screen_base)
+ return -ENOMEM;
+
+ dev_info(&dev->dev, "%d Kibyte of video memory at 0x%lx\n",
+ info->fix.smem_len / 1024, info->fix.smem_start);
+
+ return 0;
+}
+
+static struct fb_ops gxfb_ops = {
+ .owner = THIS_MODULE,
+ .fb_check_var = gxfb_check_var,
+ .fb_set_par = gxfb_set_par,
+ .fb_setcolreg = gxfb_setcolreg,
+ .fb_blank = gxfb_blank,
+ /* No HW acceleration for now. */
+ .fb_fillrect = cfb_fillrect,
+ .fb_copyarea = cfb_copyarea,
+ .fb_imageblit = cfb_imageblit,
+};
+
+static struct fb_info * __init gxfb_init_fbinfo(struct device *dev)
+{
+ struct geodefb_par *par;
+ struct fb_info *info;
+
+ /* Alloc enough space for the pseudo palette. */
+ info = framebuffer_alloc(sizeof(struct geodefb_par) + sizeof(u32) * 16, dev);
+ if (!info)
+ return NULL;
+
+ par = info->par;
+
+ strcpy(info->fix.id, "Geode GX");
+
+ info->fix.type = FB_TYPE_PACKED_PIXELS;
+ info->fix.type_aux = 0;
+ info->fix.xpanstep = 0;
+ info->fix.ypanstep = 0;
+ info->fix.ywrapstep = 0;
+ info->fix.accel = FB_ACCEL_NONE;
+
+ info->var.nonstd = 0;
+ info->var.activate = FB_ACTIVATE_NOW;
+ info->var.height = -1;
+ info->var.width = -1;
+ info->var.accel_flags = 0;
+ info->var.vmode = FB_VMODE_NONINTERLACED;
+
+ info->fbops = &gxfb_ops;
+ info->flags = FBINFO_DEFAULT;
+ info->node = -1;
+
+ info->pseudo_palette = (void *)par + sizeof(struct geodefb_par);
+
+ info->var.grayscale = 0;
+
+ return info;
+}
+
+static int __init gxfb_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+{
+ struct geodefb_par *par;
+ struct fb_info *info;
+ int ret;
+
+ info = gxfb_init_fbinfo(&pdev->dev);
+ if (!info)
+ return -ENOMEM;
+ par = info->par;
+
+ /* GX display controller and GX video device. */
+ par->dc_ops = &gx_dc_ops;
+ par->vid_ops = &gx_vid_ops;
+
+ if ((ret = gxfb_map_video_memory(info, pdev)) < 0) {
+ dev_err(&pdev->dev, "failed to map frame buffer or controller registers\n");
+ goto err;
+ }
+
+ ret = fb_find_mode(&info->var, info, mode_option,
+ gx_modedb, ARRAY_SIZE(gx_modedb), NULL, 16);
+ if (ret == 0 || ret == 4) {
+ dev_err(&pdev->dev, "could not find valid video mode\n");
+ ret = -EINVAL;
+ goto err;
+ }
+
+ /* Clear the frame buffer of garbage. */
+ memset_io(info->screen_base, 0, info->fix.smem_len);
+
+ gxfb_check_var(&info->var, info);
+ gxfb_set_par(info);
+
+ if (register_framebuffer(info) < 0) {
+ ret = -EINVAL;
+ goto err;
+ }
+ pci_set_drvdata(pdev, info);
+ printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node, info->fix.id);
+ return 0;
+
+ err:
+ if (info->screen_base) {
+ iounmap(info->screen_base);
+ pci_release_region(pdev, 0);
+ }
+ if (par->vid_regs) {
+ iounmap(par->vid_regs);
+ pci_release_region(pdev, 3);
+ }
+ if (par->dc_regs) {
+ iounmap(par->dc_regs);
+ pci_release_region(pdev, 2);
+ }
+
+ pci_disable_device(pdev);
+
+ if (info)
+ framebuffer_release(info);
+ return ret;
+}
+
+static void gxfb_remove(struct pci_dev *pdev)
+{
+ struct fb_info *info = pci_get_drvdata(pdev);
+ struct geodefb_par *par = info->par;
+
+ unregister_framebuffer(info);
+
+ iounmap((void __iomem *)info->screen_base);
+ pci_release_region(pdev, 0);
+
+ iounmap(par->vid_regs);
+ pci_release_region(pdev, 3);
+
+ iounmap(par->dc_regs);
+ pci_release_region(pdev, 2);
+
+ pci_disable_device(pdev);
+ pci_set_drvdata(pdev, NULL);
+
+ framebuffer_release(info);
+}
+
+static struct pci_device_id gxfb_id_table[] = {
+ { PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_CS5535_VIDEO,
+ PCI_ANY_ID, PCI_ANY_ID, PCI_BASE_CLASS_DISPLAY << 16,
+ 0xff0000, 0 },
+ { 0, }
+};
+
+MODULE_DEVICE_TABLE(pci, gxfb_id_table);
+
+static struct pci_driver gxfb_driver = {
+ .name = "gxfb",
+ .id_table = gxfb_id_table,
+ .probe = gxfb_probe,
+ .remove = gxfb_remove,
+};
+
+static int __init gxfb_init(void)
+{
+#ifndef MODULE
+ if (fb_get_options("gxfb", NULL))
+ return -ENODEV;
+#endif
+ return pci_register_driver(&gxfb_driver);
+}
+
+static void __exit gxfb_cleanup(void)
+{
+ pci_unregister_driver(&gxfb_driver);
+}
+
+module_init(gxfb_init);
+module_exit(gxfb_cleanup);
+
+module_param_string(mode, mode_option, sizeof(mode_option), 0444);
+MODULE_PARM_DESC(mode, "video mode (<x>x<y>[-<bpp>][@<refr>])");
+
+MODULE_DESCRIPTION("Framebuffer driver for the AMD Geode GX");
+MODULE_LICENSE("GPL");
--- /dev/null
+/*
+ * Geode GX video processor device.
+ *
+ * Copyright (C) 2006 Arcom Control Systems Ltd.
+ *
+ * Portions from AMD's original 2.4 driver:
+ * Copyright (C) 2004 Advanced Micro Devices, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+#include <linux/fb.h>
+#include <linux/delay.h>
+#include <asm/io.h>
+#include <asm/delay.h>
+#include <asm/msr.h>
+
+#include "geodefb.h"
+#include "video_gx.h"
+
+
+/*
+ * Tables of register settings for various DOTCLKs.
+ */
+struct gx_pll_entry {
+ long pixclock; /* ps */
+ u32 sys_rstpll_bits;
+ u32 dotpll_value;
+};
+
+#define POSTDIV3 ((u32)MSR_GLCP_SYS_RSTPLL_DOTPOSTDIV3)
+#define PREMULT2 ((u32)MSR_GLCP_SYS_RSTPLL_DOTPREMULT2)
+#define PREDIV2 ((u32)MSR_GLCP_SYS_RSTPLL_DOTPOSTDIV3)
+
+static const struct gx_pll_entry gx_pll_table_48MHz[] = {
+ { 40123, POSTDIV3, 0x00000BF2 }, /* 24.9230 */
+ { 39721, 0, 0x00000037 }, /* 25.1750 */
+ { 35308, POSTDIV3|PREMULT2, 0x00000B1A }, /* 28.3220 */
+ { 31746, POSTDIV3, 0x000002D2 }, /* 31.5000 */
+ { 27777, POSTDIV3|PREMULT2, 0x00000FE2 }, /* 36.0000 */
+ { 26666, POSTDIV3, 0x0000057A }, /* 37.5000 */
+ { 25000, POSTDIV3, 0x0000030A }, /* 40.0000 */
+ { 22271, 0, 0x00000063 }, /* 44.9000 */
+ { 20202, 0, 0x0000054B }, /* 49.5000 */
+ { 20000, 0, 0x0000026E }, /* 50.0000 */
+ { 19860, PREMULT2, 0x00000037 }, /* 50.3500 */
+ { 18518, POSTDIV3|PREMULT2, 0x00000B0D }, /* 54.0000 */
+ { 17777, 0, 0x00000577 }, /* 56.2500 */
+ { 17733, 0, 0x000007F7 }, /* 56.3916 */
+ { 17653, 0, 0x0000057B }, /* 56.6444 */
+ { 16949, PREMULT2, 0x00000707 }, /* 59.0000 */
+ { 15873, POSTDIV3|PREMULT2, 0x00000B39 }, /* 63.0000 */
+ { 15384, POSTDIV3|PREMULT2, 0x00000B45 }, /* 65.0000 */
+ { 14814, POSTDIV3|PREMULT2, 0x00000FC1 }, /* 67.5000 */
+ { 14124, POSTDIV3, 0x00000561 }, /* 70.8000 */
+ { 13888, POSTDIV3, 0x000007E1 }, /* 72.0000 */
+ { 13426, PREMULT2, 0x00000F4A }, /* 74.4810 */
+ { 13333, 0, 0x00000052 }, /* 75.0000 */
+ { 12698, 0, 0x00000056 }, /* 78.7500 */
+ { 12500, POSTDIV3|PREMULT2, 0x00000709 }, /* 80.0000 */
+ { 11135, PREMULT2, 0x00000262 }, /* 89.8000 */
+ { 10582, 0, 0x000002D2 }, /* 94.5000 */
+ { 10101, PREMULT2, 0x00000B4A }, /* 99.0000 */
+ { 10000, PREMULT2, 0x00000036 }, /* 100.0000 */
+ { 9259, 0, 0x000007E2 }, /* 108.0000 */
+ { 8888, 0, 0x000007F6 }, /* 112.5000 */
+ { 7692, POSTDIV3|PREMULT2, 0x00000FB0 }, /* 130.0000 */
+ { 7407, POSTDIV3|PREMULT2, 0x00000B50 }, /* 135.0000 */
+ { 6349, 0, 0x00000055 }, /* 157.5000 */
+ { 6172, 0, 0x000009C1 }, /* 162.0000 */
+ { 5787, PREMULT2, 0x0000002D }, /* 172.798 */
+ { 5698, 0, 0x000002C1 }, /* 175.5000 */
+ { 5291, 0, 0x000002D1 }, /* 189.0000 */
+ { 4938, 0, 0x00000551 }, /* 202.5000 */
+ { 4357, 0, 0x0000057D }, /* 229.5000 */
+};
+
+static const struct gx_pll_entry gx_pll_table_14MHz[] = {
+ { 39721, 0, 0x00000037 }, /* 25.1750 */
+ { 35308, 0, 0x00000B7B }, /* 28.3220 */
+ { 31746, 0, 0x000004D3 }, /* 31.5000 */
+ { 27777, 0, 0x00000BE3 }, /* 36.0000 */
+ { 26666, 0, 0x0000074F }, /* 37.5000 */
+ { 25000, 0, 0x0000050B }, /* 40.0000 */
+ { 22271, 0, 0x00000063 }, /* 44.9000 */
+ { 20202, 0, 0x0000054B }, /* 49.5000 */
+ { 20000, 0, 0x0000026E }, /* 50.0000 */
+ { 19860, 0, 0x000007C3 }, /* 50.3500 */
+ { 18518, 0, 0x000007E3 }, /* 54.0000 */
+ { 17777, 0, 0x00000577 }, /* 56.2500 */
+ { 17733, 0, 0x000002FB }, /* 56.3916 */
+ { 17653, 0, 0x0000057B }, /* 56.6444 */
+ { 16949, 0, 0x0000058B }, /* 59.0000 */
+ { 15873, 0, 0x0000095E }, /* 63.0000 */
+ { 15384, 0, 0x0000096A }, /* 65.0000 */
+ { 14814, 0, 0x00000BC2 }, /* 67.5000 */
+ { 14124, 0, 0x0000098A }, /* 70.8000 */
+ { 13888, 0, 0x00000BE2 }, /* 72.0000 */
+ { 13333, 0, 0x00000052 }, /* 75.0000 */
+ { 12698, 0, 0x00000056 }, /* 78.7500 */
+ { 12500, 0, 0x0000050A }, /* 80.0000 */
+ { 11135, 0, 0x0000078E }, /* 89.8000 */
+ { 10582, 0, 0x000002D2 }, /* 94.5000 */
+ { 10101, 0, 0x000011F6 }, /* 99.0000 */
+ { 10000, 0, 0x0000054E }, /* 100.0000 */
+ { 9259, 0, 0x000007E2 }, /* 108.0000 */
+ { 8888, 0, 0x000002FA }, /* 112.5000 */
+ { 7692, 0, 0x00000BB1 }, /* 130.0000 */
+ { 7407, 0, 0x00000975 }, /* 135.0000 */
+ { 6349, 0, 0x00000055 }, /* 157.5000 */
+ { 6172, 0, 0x000009C1 }, /* 162.0000 */
+ { 5698, 0, 0x000002C1 }, /* 175.5000 */
+ { 5291, 0, 0x00000539 }, /* 189.0000 */
+ { 4938, 0, 0x00000551 }, /* 202.5000 */
+ { 4357, 0, 0x0000057D }, /* 229.5000 */
+};
+
+static void gx_set_dclk_frequency(struct fb_info *info)
+{
+ const struct gx_pll_entry *pll_table;
+ int pll_table_len;
+ int i, best_i;
+ long min, diff;
+ u64 dotpll, sys_rstpll;
+ int timeout = 1000;
+
+ /* Rev. 1 Geode GXs use a 14 MHz reference clock instead of 48 MHz. */
+ if (cpu_data->x86_mask == 1) {
+ pll_table = gx_pll_table_14MHz;
+ pll_table_len = ARRAY_SIZE(gx_pll_table_14MHz);
+ } else {
+ pll_table = gx_pll_table_48MHz;
+ pll_table_len = ARRAY_SIZE(gx_pll_table_48MHz);
+ }
+
+ /* Search the table for the closest pixclock. */
+ best_i = 0;
+ min = abs(pll_table[0].pixclock - info->var.pixclock);
+ for (i = 1; i < pll_table_len; i++) {
+ diff = abs(pll_table[i].pixclock - info->var.pixclock);
+ if (diff < min) {
+ min = diff;
+ best_i = i;
+ }
+ }
+
+ rdmsrl(MSR_GLCP_SYS_RSTPLL, sys_rstpll);
+ rdmsrl(MSR_GLCP_DOTPLL, dotpll);
+
+ /* Program new M, N and P. */
+ dotpll &= 0x00000000ffffffffull;
+ dotpll |= (u64)pll_table[best_i].dotpll_value << 32;
+ dotpll |= MSR_GLCP_DOTPLL_DOTRESET;
+ dotpll &= ~MSR_GLCP_DOTPLL_BYPASS;
+
+ wrmsrl(MSR_GLCP_DOTPLL, dotpll);
+
+ /* Program dividers. */
+ sys_rstpll &= ~( MSR_GLCP_SYS_RSTPLL_DOTPREDIV2
+ | MSR_GLCP_SYS_RSTPLL_DOTPREMULT2
+ | MSR_GLCP_SYS_RSTPLL_DOTPOSTDIV3 );
+ sys_rstpll |= pll_table[best_i].sys_rstpll_bits;
+
+ wrmsrl(MSR_GLCP_SYS_RSTPLL, sys_rstpll);
+
+ /* Clear reset bit to start PLL. */
+ dotpll &= ~(MSR_GLCP_DOTPLL_DOTRESET);
+ wrmsrl(MSR_GLCP_DOTPLL, dotpll);
+
+ /* Wait for LOCK bit. */
+ do {
+ rdmsrl(MSR_GLCP_DOTPLL, dotpll);
+ } while (timeout-- && !(dotpll & MSR_GLCP_DOTPLL_LOCK));
+}
+
+static void gx_configure_display(struct fb_info *info)
+{
+ struct geodefb_par *par = info->par;
+ u32 dcfg, fp_pm;
+
+ dcfg = readl(par->vid_regs + GX_DCFG);
+
+ /* Clear bits from existing mode. */
+ dcfg &= ~(GX_DCFG_CRT_SYNC_SKW_MASK
+ | GX_DCFG_CRT_HSYNC_POL | GX_DCFG_CRT_VSYNC_POL
+ | GX_DCFG_VSYNC_EN | GX_DCFG_HSYNC_EN);
+
+ /* Set default sync skew. */
+ dcfg |= GX_DCFG_CRT_SYNC_SKW_DFLT;
+
+ /* Enable hsync and vsync. */
+ dcfg |= GX_DCFG_HSYNC_EN | GX_DCFG_VSYNC_EN;
+
+ /* Sync polarities. */
+ if (info->var.sync & FB_SYNC_HOR_HIGH_ACT)
+ dcfg |= GX_DCFG_CRT_HSYNC_POL;
+ if (info->var.sync & FB_SYNC_VERT_HIGH_ACT)
+ dcfg |= GX_DCFG_CRT_VSYNC_POL;
+
+ writel(dcfg, par->vid_regs + GX_DCFG);
+
+ /* Power on flat panel. */
+ fp_pm = readl(par->vid_regs + GX_FP_PM);
+ fp_pm |= GX_FP_PM_P;
+ writel(fp_pm, par->vid_regs + GX_FP_PM);
+}
+
+static int gx_blank_display(struct fb_info *info, int blank_mode)
+{
+ struct geodefb_par *par = info->par;
+ u32 dcfg, fp_pm;
+ int blank, hsync, vsync;
+
+ /* CRT power saving modes. */
+ switch (blank_mode) {
+ case FB_BLANK_UNBLANK:
+ blank = 0; hsync = 1; vsync = 1;
+ break;
+ case FB_BLANK_NORMAL:
+ blank = 1; hsync = 1; vsync = 1;
+ break;
+ case FB_BLANK_VSYNC_SUSPEND:
+ blank = 1; hsync = 1; vsync = 0;
+ break;
+ case FB_BLANK_HSYNC_SUSPEND:
+ blank = 1; hsync = 0; vsync = 1;
+ break;
+ case FB_BLANK_POWERDOWN:
+ blank = 1; hsync = 0; vsync = 0;
+ break;
+ default:
+ return -EINVAL;
+ }
+ dcfg = readl(par->vid_regs + GX_DCFG);
+ dcfg &= ~(GX_DCFG_DAC_BL_EN
+ | GX_DCFG_HSYNC_EN | GX_DCFG_VSYNC_EN);
+ if (!blank)
+ dcfg |= GX_DCFG_DAC_BL_EN;
+ if (hsync)
+ dcfg |= GX_DCFG_HSYNC_EN;
+ if (vsync)
+ dcfg |= GX_DCFG_VSYNC_EN;
+ writel(dcfg, par->vid_regs + GX_DCFG);
+
+ /* Power on/off flat panel. */
+ fp_pm = readl(par->vid_regs + GX_FP_PM);
+ if (blank_mode == FB_BLANK_POWERDOWN)
+ fp_pm &= ~GX_FP_PM_P;
+ else
+ fp_pm |= GX_FP_PM_P;
+ writel(fp_pm, par->vid_regs + GX_FP_PM);
+
+ return 0;
+}
+
+struct geode_vid_ops gx_vid_ops = {
+ .set_dclk = gx_set_dclk_frequency,
+ .configure_display = gx_configure_display,
+ .blank_display = gx_blank_display,
+};
--- /dev/null
+/*
+ * Geode GX video device
+ *
+ * Copyright (C) 2006 Arcom Control Systems Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+#ifndef __VIDEO_GX_H__
+#define __VIDEO_GX_H__
+
+extern struct geode_vid_ops gx_vid_ops;
+
+/* Geode GX video processor registers */
+
+#define GX_DCFG 0x0008
+# define GX_DCFG_CRT_EN 0x00000001
+# define GX_DCFG_HSYNC_EN 0x00000002
+# define GX_DCFG_VSYNC_EN 0x00000004
+# define GX_DCFG_DAC_BL_EN 0x00000008
+# define GX_DCFG_CRT_HSYNC_POL 0x00000100
+# define GX_DCFG_CRT_VSYNC_POL 0x00000200
+# define GX_DCFG_CRT_SYNC_SKW_MASK 0x0001C000
+# define GX_DCFG_CRT_SYNC_SKW_DFLT 0x00010000
+# define GX_DCFG_VG_CK 0x00100000
+# define GX_DCFG_GV_GAM 0x00200000
+# define GX_DCFG_DAC_VREF 0x04000000
+
+/* Geode GX flat panel display control registers */
+#define GX_FP_PM 0x410
+# define GX_FP_PM_P 0x01000000
+
+/* Geode GX clock control MSRs */
+
+#define MSR_GLCP_SYS_RSTPLL 0x4c000014
+# define MSR_GLCP_SYS_RSTPLL_DOTPREDIV2 (0x0000000000000002ull)
+# define MSR_GLCP_SYS_RSTPLL_DOTPREMULT2 (0x0000000000000004ull)
+# define MSR_GLCP_SYS_RSTPLL_DOTPOSTDIV3 (0x0000000000000008ull)
+
+#define MSR_GLCP_DOTPLL 0x4c000015
+# define MSR_GLCP_DOTPLL_DOTRESET (0x0000000000000001ull)
+# define MSR_GLCP_DOTPLL_BYPASS (0x0000000000008000ull)
+# define MSR_GLCP_DOTPLL_LOCK (0x0000000002000000ull)
+
+#endif /* !__VIDEO_GX_H__ */
}
}
- if (out_edid)
- *out_edid = edid;
+ *out_edid = edid;
return (edid) ? 0 : 1;
}
static void
setclkMHz(struct imstt_par *par, __u32 MHz)
{
- __u32 clk_m, clk_n, clk_p, x, stage, spilled;
+ __u32 clk_m, clk_n, x, stage, spilled;
- clk_m = clk_n = clk_p = 0;
+ clk_m = clk_n = 0;
stage = spilled = 0;
for (;;) {
switch (stage) {
clk_n++;
break;
}
- x = 20 * (clk_m + 1) / ((clk_n + 1) * (clk_p ? 2 * clk_p : 1));
+ x = 20 * (clk_m + 1) / (clk_n + 1);
if (x == MHz)
break;
if (x > MHz) {
par->init.pclk_m = clk_m;
par->init.pclk_n = clk_n;
- par->init.pclk_p = clk_p;
+ par->init.pclk_p = 0;
}
static struct imstt_regvals *
write_reg_le32(par->dc_regs, STGCTL, tmp & ~0x1);
write_reg_le32(par->dc_regs, SSR, 0);
- /* set default values for DAC registers */
+ /* set default values for DAC registers */
if (par->ramdac == IBM) {
- par->cmap_regs[PPMASK] = 0xff; eieio();
- par->cmap_regs[PIDXHI] = 0; eieio();
- for (i = 0; i < sizeof(ibm_initregs) / sizeof(*ibm_initregs); i++) {
- par->cmap_regs[PIDXLO] = ibm_initregs[i].addr; eieio();
- par->cmap_regs[PIDXDATA] = ibm_initregs[i].value; eieio();
+ par->cmap_regs[PPMASK] = 0xff;
+ eieio();
+ par->cmap_regs[PIDXHI] = 0;
+ eieio();
+ for (i = 0; i < ARRAY_SIZE(ibm_initregs); i++) {
+ par->cmap_regs[PIDXLO] = ibm_initregs[i].addr;
+ eieio();
+ par->cmap_regs[PIDXDATA] = ibm_initregs[i].value;
+ eieio();
}
} else {
- for (i = 0; i < sizeof(tvp_initregs) / sizeof(*tvp_initregs); i++) {
- par->cmap_regs[TVPADDRW] = tvp_initregs[i].addr; eieio();
- par->cmap_regs[TVPIDATA] = tvp_initregs[i].value; eieio();
+ for (i = 0; i < ARRAY_SIZE(tvp_initregs); i++) {
+ par->cmap_regs[TVPADDRW] = tvp_initregs[i].addr;
+ eieio();
+ par->cmap_regs[TVPIDATA] = tvp_initregs[i].value;
+ eieio();
}
}
if (mode_option && !strncmp(mode_option, "mac", 3)) {
mode_option += 3;
db = mac_modedb;
- dbsize = sizeof(mac_modedb)/sizeof(*mac_modedb);
+ dbsize = ARRAY_SIZE(mac_modedb);
}
return fb_find_mode(var, info, mode_option, db, dbsize,
&mac_modedb[DEFAULT_MODEDB_INDEX], default_bpp);
}, offsetof(struct matrox_fb_info, altout.tvo_params.testout) },
};
-#define G450CTRLS (sizeof(g450_controls)/sizeof(g450_controls[0]))
+#define G450CTRLS ARRAY_SIZE(g450_controls)
/* Return: positive number: id found
-EINVAL: id not found, return failure
}, offsetof(struct matrox_fb_info, altout.tvo_params.hue) },
{ { V4L2_CID_GAMMA, V4L2_CTRL_TYPE_INTEGER,
"gamma",
- 0, sizeof(maven_gamma)/sizeof(maven_gamma[0])-1, 1, 3,
+ 0, ARRAY_SIZE(maven_gamma) - 1, 1, 3,
0,
}, offsetof(struct matrox_fb_info, altout.tvo_params.gamma) },
{ { MATROXFB_CID_TESTOUT, V4L2_CTRL_TYPE_BOOLEAN,
"test output",
- 0, 1, 1, 0,
+ 0, 1, 1, 0,
0,
}, offsetof(struct matrox_fb_info, altout.tvo_params.testout) },
{ { MATROXFB_CID_DEFLICKER, V4L2_CTRL_TYPE_INTEGER,
};
-#define MAVCTRLS (sizeof(maven_controls)/sizeof(maven_controls[0]))
+#define MAVCTRLS ARRAY_SIZE(maven_controls)
/* Return: positive number: id found
-EINVAL: id not found, return failure
struct maven_data {
struct matrox_fb_info* primary_head;
- struct i2c_client* client;
+ struct i2c_client client;
int version;
};
static int maven_program_timming(struct maven_data* md,
const struct mavenregs* m) {
- struct i2c_client* c = md->client;
+ struct i2c_client* c = &md->client;
if (m->mode == MATROXFB_OUTPUT_MODE_MONITOR) {
LR(0x80);
}
static inline int maven_resync(struct maven_data* md) {
- struct i2c_client* c = md->client;
+ struct i2c_client* c = &md->client;
maven_set_reg(c, 0x95, 0x20); /* start whole thing */
return 0;
}
maven_compute_bwlevel(md, &blacklevel, &whitelevel);
blacklevel = (blacklevel >> 2) | ((blacklevel & 3) << 8);
whitelevel = (whitelevel >> 2) | ((whitelevel & 3) << 8);
- maven_set_reg_pair(md->client, 0x0e, blacklevel);
- maven_set_reg_pair(md->client, 0x1e, whitelevel);
+ maven_set_reg_pair(&md->client, 0x0e, blacklevel);
+ maven_set_reg_pair(&md->client, 0x1e, whitelevel);
}
break;
case V4L2_CID_SATURATION:
{
- maven_set_reg(md->client, 0x20, p->value);
- maven_set_reg(md->client, 0x22, p->value);
+ maven_set_reg(&md->client, 0x20, p->value);
+ maven_set_reg(&md->client, 0x22, p->value);
}
break;
case V4L2_CID_HUE:
{
- maven_set_reg(md->client, 0x25, p->value);
+ maven_set_reg(&md->client, 0x25, p->value);
}
break;
case V4L2_CID_GAMMA:
{
const struct maven_gamma* g;
g = maven_compute_gamma(md);
- maven_set_reg(md->client, 0x83, g->reg83);
- maven_set_reg(md->client, 0x84, g->reg84);
- maven_set_reg(md->client, 0x85, g->reg85);
- maven_set_reg(md->client, 0x86, g->reg86);
- maven_set_reg(md->client, 0x87, g->reg87);
- maven_set_reg(md->client, 0x88, g->reg88);
- maven_set_reg(md->client, 0x89, g->reg89);
- maven_set_reg(md->client, 0x8a, g->reg8a);
- maven_set_reg(md->client, 0x8b, g->reg8b);
+ maven_set_reg(&md->client, 0x83, g->reg83);
+ maven_set_reg(&md->client, 0x84, g->reg84);
+ maven_set_reg(&md->client, 0x85, g->reg85);
+ maven_set_reg(&md->client, 0x86, g->reg86);
+ maven_set_reg(&md->client, 0x87, g->reg87);
+ maven_set_reg(&md->client, 0x88, g->reg88);
+ maven_set_reg(&md->client, 0x89, g->reg89);
+ maven_set_reg(&md->client, 0x8a, g->reg8a);
+ maven_set_reg(&md->client, 0x8b, g->reg8b);
}
break;
case MATROXFB_CID_TESTOUT:
{
unsigned char val
- = maven_get_reg (md->client,0x8d);
+ = maven_get_reg(&md->client,0x8d);
if (p->value) val |= 0x10;
else val &= ~0x10;
- maven_set_reg (md->client, 0x8d, val);
+ maven_set_reg(&md->client, 0x8d, val);
}
break;
case MATROXFB_CID_DEFLICKER:
{
- maven_set_reg(md->client, 0x93, maven_compute_deflicker(md));
+ maven_set_reg(&md->client, 0x93, maven_compute_deflicker(md));
}
break;
}
MINFO_FROM(container_of(clnt->adapter, struct i2c_bit_adapter, adapter)->minfo);
md->primary_head = MINFO;
- md->client = clnt;
down_write(&ACCESS_FBINFO(altout.lock));
ACCESS_FBINFO(outputs[1]).output = &maven_altout;
ACCESS_FBINFO(outputs[1]).src = ACCESS_FBINFO(outputs[1]).default_src;
I2C_FUNC_SMBUS_BYTE_DATA |
I2C_FUNC_PROTOCOL_MANGLING))
goto ERROR0;
- if (!(new_client = (struct i2c_client*)kmalloc(sizeof(*new_client) + sizeof(*data),
- GFP_KERNEL))) {
+ if (!(data = kzalloc(sizeof(*data), GFP_KERNEL))) {
err = -ENOMEM;
goto ERROR0;
}
- memset(new_client, 0, sizeof(*new_client) + sizeof(*data));
- data = (struct maven_data*)(new_client + 1);
+ new_client = &data->client;
i2c_set_clientdata(new_client, data);
new_client->addr = address;
new_client->adapter = adapter;
new_client->driver = &maven_driver;
new_client->flags = 0;
- strcpy(new_client->name, "maven client");
+ strlcpy(new_client->name, "maven", I2C_NAME_SIZE);
if ((err = i2c_attach_client(new_client)))
goto ERROR3;
err = maven_init_client(new_client);
static int maven_detach_client(struct i2c_client* client) {
int err;
- if ((err = i2c_detach_client(client))) {
- printk(KERN_ERR "maven: Cannot deregister client\n");
+ if ((err = i2c_detach_client(client)))
return err;
- }
maven_shutdown_client(client);
- kfree(client);
+ kfree(i2c_get_clientdata(client));
return 0;
}
.detach_client = maven_detach_client,
};
-/* ************************** */
-
-static int matroxfb_maven_init(void) {
- int err;
-
- err = i2c_add_driver(&maven_driver);
- if (err) {
- printk(KERN_ERR "maven: Maven driver failed to register (%d).\n", err);
- return err;
- }
- return 0;
+static int __init matroxfb_maven_init(void)
+{
+ return i2c_add_driver(&maven_driver);
}
-static void matroxfb_maven_exit(void) {
+static void __exit matroxfb_maven_exit(void)
+{
i2c_del_driver(&maven_driver);
}
NULL, 75, 1600, 1200, 4938, 304, 64, 46, 1, 192, 3,
FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
}, {
+ /* 1680x1050 @ 60 Hz, 65.191 kHz hsync */
+ NULL, 60, 1680, 1050, 6848, 280, 104, 30, 3, 176, 6,
+ FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
+ }, {
/* 1600x1200 @ 85 Hz, 105.77 kHz hsync */
NULL, 85, 1600, 1200, 4545, 272, 16, 37, 4, 192, 3,
FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
/* Set up defaults */
if (!db) {
db = modedb;
- dbsize = sizeof(modedb)/sizeof(*modedb);
+ dbsize = ARRAY_SIZE(modedb);
}
if (!default_mode)
default_mode = &modedb[DEFAULT_MODEDB_INDEX];
switch (depth) {
case 8:
- size = sizeof(bios8) / sizeof(biosMode);
+ size = ARRAY_SIZE(bios8);
mode = bios8;
break;
case 16:
- size = sizeof(bios16) / sizeof(biosMode);
+ size = ARRAY_SIZE(bios16);
mode = bios16;
break;
case 24:
- size = sizeof(bios24) / sizeof(biosMode);
+ size = ARRAY_SIZE(bios24);
mode = bios24;
break;
#ifdef NO_32BIT_SUPPORT_YET
case 32:
- size = sizeof(bios32) / sizeof(biosMode);
+ size = ARRAY_SIZE(bios32);
mode = bios32;
break;
#endif
{
struct nvidia_par *par = info->par;
+ if (info->state != FBINFO_STATE_RUNNING)
+ return 0;
+
if (!par->lockup)
NVFlush(par);
{
struct nvidia_par *par = info->par;
+ if (info->state != FBINFO_STATE_RUNNING)
+ return;
+
if (par->lockup)
return cfb_copyarea(info, region);
struct nvidia_par *par = info->par;
u32 color;
+ if (info->state != FBINFO_STATE_RUNNING)
+ return;
+
if (par->lockup)
return cfb_fillrect(info, rect);
{
struct nvidia_par *par = info->par;
+ if (info->state != FBINFO_STATE_RUNNING)
+ return;
+
if (image->depth == 1 && !par->lockup)
nvidiafb_mono_color_expand(info, image);
else
}
}
- if (out_edid)
- *out_edid = edid;
+ *out_edid = edid;
return (edid) ? 0 : 1;
}
int fpHeight;
int PanelTweak;
int paneltweak;
+ int pm_state;
u32 crtcSync_read;
u32 fpSyncs;
u32 dmaPut;
#include <linux/fb.h>
#include <linux/init.h>
#include <linux/pci.h>
+#include <linux/console.h>
#ifdef CONFIG_MTRR
#include <asm/mtrr.h>
#endif
PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
{PCI_VENDOR_ID_NVIDIA, PCIE_DEVICE_ID_NVIDIA_GEFORCE_6800_GT,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+ {PCI_VENDOR_ID_NVIDIA, PCIE_DEVICE_ID_NVIDIA_QUADRO_NVS280,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
{PCI_VENDOR_ID_NVIDIA, 0x0252,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
{PCI_VENDOR_ID_NVIDIA, 0x0313,
return tweak;
}
+static void nvidia_vga_protect(struct nvidia_par *par, int on)
+{
+ unsigned char tmp;
+
+ if (on) {
+ /*
+ * Turn off screen and disable sequencer.
+ */
+ tmp = NVReadSeq(par, 0x01);
+
+ NVWriteSeq(par, 0x00, 0x01); /* Synchronous Reset */
+ NVWriteSeq(par, 0x01, tmp | 0x20); /* disable the display */
+ } else {
+ /*
+ * Reenable sequencer, then turn on screen.
+ */
+
+ tmp = NVReadSeq(par, 0x01);
+
+ NVWriteSeq(par, 0x01, tmp & ~0x20); /* reenable display */
+ NVWriteSeq(par, 0x00, 0x03); /* End Reset */
+ }
+}
+
static void nvidia_save_vga(struct nvidia_par *par,
struct _riva_hw_state *state)
{
#undef DUMP_REG
-static void nvidia_write_regs(struct nvidia_par *par)
+static void nvidia_write_regs(struct nvidia_par *par,
+ struct _riva_hw_state *state)
{
- struct _riva_hw_state *state = &par->ModeReg;
int i;
NVTRACE_ENTER();
NVTRACE_LEAVE();
}
-static void nvidia_vga_protect(struct nvidia_par *par, int on)
-{
- unsigned char tmp;
-
- if (on) {
- /*
- * Turn off screen and disable sequencer.
- */
- tmp = NVReadSeq(par, 0x01);
-
- NVWriteSeq(par, 0x00, 0x01); /* Synchronous Reset */
- NVWriteSeq(par, 0x01, tmp | 0x20); /* disable the display */
- } else {
- /*
- * Reenable sequencer, then turn on screen.
- */
-
- tmp = NVReadSeq(par, 0x01);
-
- NVWriteSeq(par, 0x01, tmp & ~0x20); /* reenable display */
- NVWriteSeq(par, 0x00, 0x03); /* End Reset */
- }
-}
-
-
-
static int nvidia_calc_regs(struct fb_info *info)
{
struct nvidia_par *par = info->par;
nvidia_vga_protect(par, 1);
- nvidia_write_regs(par);
+ nvidia_write_regs(par, &par->ModeReg);
+ NVSetStartAddress(par, 0);
#if defined (__BIG_ENDIAN)
/* turn on LFB swapping */
.fb_sync = nvidiafb_sync,
};
+#ifdef CONFIG_PM
+static int nvidiafb_suspend(struct pci_dev *dev, pm_message_t state)
+{
+ struct fb_info *info = pci_get_drvdata(dev);
+ struct nvidia_par *par = info->par;
+
+ acquire_console_sem();
+ par->pm_state = state.event;
+
+ if (state.event == PM_EVENT_FREEZE) {
+ dev->dev.power.power_state = state;
+ } else {
+ fb_set_suspend(info, 1);
+ nvidiafb_blank(FB_BLANK_POWERDOWN, info);
+ nvidia_write_regs(par, &par->SavedReg);
+ pci_save_state(dev);
+ pci_disable_device(dev);
+ pci_set_power_state(dev, pci_choose_state(dev, state));
+ }
+
+ release_console_sem();
+ return 0;
+}
+
+static int nvidiafb_resume(struct pci_dev *dev)
+{
+ struct fb_info *info = pci_get_drvdata(dev);
+ struct nvidia_par *par = info->par;
+
+ acquire_console_sem();
+ pci_set_power_state(dev, PCI_D0);
+
+ if (par->pm_state != PM_EVENT_FREEZE) {
+ pci_restore_state(dev);
+ pci_enable_device(dev);
+ pci_set_master(dev);
+ }
+
+ par->pm_state = PM_EVENT_ON;
+ nvidiafb_set_par(info);
+ fb_set_suspend (info, 0);
+ nvidiafb_blank(FB_BLANK_UNBLANK, info);
+
+ release_console_sem();
+ return 0;
+}
+#else
+#define nvidiafb_suspend NULL
+#define nvidiafb_resume NULL
+#endif
+
static int __devinit nvidia_set_fbinfo(struct fb_info *info)
{
struct fb_monspecs *specs = &info->monspecs;
struct nvidia_par *par = info->par;
NVTRACE_ENTER();
- if (!info)
- return;
unregister_framebuffer(info);
#ifdef CONFIG_MTRR
static struct pci_driver nvidiafb_driver = {
.name = "nvidiafb",
.id_table = nvidiafb_pci_tbl,
- .probe = nvidiafb_probe,
- .remove = __exit_p(nvidiafb_remove),
+ .probe = nvidiafb_probe,
+ .suspend = nvidiafb_suspend,
+ .resume = nvidiafb_resume,
+ .remove = __exit_p(nvidiafb_remove),
};
/* ------------------------------------------------------------------------- *
freq1 = (par->osc0 * count1 + count0 / 2) / count0;
par->osc1 = freq1;
- for (i = 0; i < sizeof(pmagbbfb_freqs) / sizeof(*pmagbbfb_freqs); i++)
+ for (i = 0; i < ARRAY_SIZE(pmagbbfb_freqs); i++)
if (freq1 >= pmagbbfb_freqs[i] -
(pmagbbfb_freqs[i] + 128) / 256 &&
freq1 <= pmagbbfb_freqs[i] +
rom = rom_base;
for (i = 0; (i < 512) && (stage != 4); i++) {
- for(j = 0;j < sizeof(radeon_sig)/sizeof(char *);j++) {
+ for (j = 0; j < ARRAY_SIZE(radeon_sig); j++) {
if (radeon_sig[j][0] == *rom)
if (strncmp(radeon_sig[j], rom,
strlen(radeon_sig[j])) == 0) {
struct riva_par *par = info->par;
NVTRACE_ENTER();
- if (!info)
- return;
#ifdef CONFIG_FB_RIVA_I2C
riva_delete_i2c_busses(par);
}
}
- if (out_edid)
- *out_edid = edid;
+ *out_edid = edid;
return (edid) ? 0 : 1;
}
static void
SiS_ChrontelDoSomething2(struct SiS_Private *SiS_Pr)
{
- unsigned short temp,tempcl,tempch;
+ unsigned short temp;
SiS_LongDelay(SiS_Pr, 1);
- tempcl = 3;
- tempch = 0;
do {
temp = SiS_GetCH701x(SiS_Pr,0x66);
SiS_SetCH701xForLCD(SiS_Pr);
- if(tempcl == 0) {
- if(tempch == 3) break;
- SiS_ChrontelResetDB(SiS_Pr);
- tempcl = 3;
- tempch++;
- }
- tempcl--;
temp = SiS_GetCH701x(SiS_Pr,0x76);
temp &= 0xfb; /* Reset PLL */
SiS_SetCH701x(SiS_Pr,0x76,temp);
static int __devinit sst_detect_dactype(struct fb_info *info, struct sstfb_par *par)
{
int i, ret = 0;
-
- for (i=0; i<sizeof(dacs)/sizeof(dacs[0]); i++) {
+
+ for (i = 0; i < ARRAY_SIZE(dacs); i++) {
ret = dacs[i].detect(info);
- if (ret) break;
+ if (ret)
+ break;
}
if (!ret)
return 0;
{FBZMODE,"fbzmode"},
};
- const int pci_s = sizeof(pci_regs)/sizeof(pci_regs[0]);
- const int sst_s = sizeof(sst_regs)/sizeof(sst_regs[0]);
+ const int pci_s = ARRAY_SIZE(pci_regs);
+ const int sst_s = ARRAY_SIZE(sst_regs);
struct sstfb_par *par = info->par;
struct pci_dev *dev = par->dev;
u32 pci_res[pci_s];
#endif
};
-#define arraysize(x) (sizeof(x)/sizeof(*(x)))
-#define NUM_TOTAL_MODES arraysize(virgefb_predefined)
+#define NUM_TOTAL_MODES ARRAY_SIZE(virgefb_predefined)
/*
* Default to 800x600 for video=virge8:, virge16: or virge32:
extern struct file_system_type v9fs_fs_type;
extern struct address_space_operations v9fs_addr_operations;
-extern struct file_operations v9fs_file_operations;
-extern struct file_operations v9fs_dir_operations;
+extern const struct file_operations v9fs_file_operations;
+extern const struct file_operations v9fs_dir_operations;
extern struct dentry_operations v9fs_dentry_operations;
struct inode *v9fs_get_inode(struct super_block *sb, int mode);
return 0;
}
-struct file_operations v9fs_dir_operations = {
+const struct file_operations v9fs_dir_operations = {
.read = generic_read_dir,
.readdir = v9fs_dir_readdir,
.open = v9fs_file_open,
return total;
}
-struct file_operations v9fs_file_operations = {
+const struct file_operations v9fs_file_operations = {
.llseek = generic_file_llseek,
.read = v9fs_file_read,
.write = v9fs_file_write,
/* dir_*.c */
extern struct inode_operations adfs_dir_inode_operations;
-extern struct file_operations adfs_dir_operations;
+extern const struct file_operations adfs_dir_operations;
extern struct dentry_operations adfs_dentry_operations;
extern struct adfs_dir_ops adfs_f_dir_ops;
extern struct adfs_dir_ops adfs_fplus_dir_ops;
/* file.c */
extern struct inode_operations adfs_file_inode_operations;
-extern struct file_operations adfs_file_operations;
+extern const struct file_operations adfs_file_operations;
static inline __u32 signed_asl(__u32 val, signed int shift)
{
return ret;
}
-struct file_operations adfs_dir_operations = {
+const struct file_operations adfs_dir_operations = {
.read = generic_read_dir,
.readdir = adfs_readdir,
.fsync = file_fsync,
#include "adfs.h"
-struct file_operations adfs_file_operations = {
+const struct file_operations adfs_file_operations = {
.llseek = generic_file_llseek,
.read = generic_file_read,
.mmap = generic_file_mmap,
extern struct inode_operations affs_file_inode_operations;
extern struct inode_operations affs_dir_inode_operations;
extern struct inode_operations affs_symlink_inode_operations;
-extern struct file_operations affs_file_operations;
-extern struct file_operations affs_file_operations_ofs;
-extern struct file_operations affs_dir_operations;
+extern const struct file_operations affs_file_operations;
+extern const struct file_operations affs_file_operations_ofs;
+extern const struct file_operations affs_dir_operations;
extern struct address_space_operations affs_symlink_aops;
extern struct address_space_operations affs_aops;
extern struct address_space_operations affs_aops_ofs;
static int affs_readdir(struct file *, void *, filldir_t);
-struct file_operations affs_dir_operations = {
+const struct file_operations affs_dir_operations = {
.read = generic_read_dir,
.readdir = affs_readdir,
.fsync = file_fsync,
static int affs_file_open(struct inode *inode, struct file *filp);
static int affs_file_release(struct inode *inode, struct file *filp);
-struct file_operations affs_file_operations = {
+const struct file_operations affs_file_operations = {
.llseek = generic_file_llseek,
.read = generic_file_read,
.write = generic_file_write,
static int afs_dir_lookup_filldir(void *_cookie, const char *name, int nlen,
loff_t fpos, ino_t ino, unsigned dtype);
-struct file_operations afs_dir_file_operations = {
+const struct file_operations afs_dir_file_operations = {
.open = afs_dir_open,
.readdir = afs_dir_readdir,
};
* dir.c
*/
extern struct inode_operations afs_dir_inode_operations;
-extern struct file_operations afs_dir_file_operations;
+extern const struct file_operations afs_dir_file_operations;
/*
* file.c
* mntpt.c
*/
extern struct inode_operations afs_mntpt_inode_operations;
-extern struct file_operations afs_mntpt_file_operations;
+extern const struct file_operations afs_mntpt_file_operations;
extern struct afs_timer afs_mntpt_expiry_timer;
extern struct afs_timer_ops afs_mntpt_expiry_timer_ops;
extern unsigned long afs_mntpt_expiry_timeout;
static int afs_mntpt_open(struct inode *inode, struct file *file);
static void *afs_mntpt_follow_link(struct dentry *dentry, struct nameidata *nd);
-struct file_operations afs_mntpt_file_operations = {
+const struct file_operations afs_mntpt_file_operations = {
.open = afs_mntpt_open,
};
.show = afs_proc_cells_show,
};
-static struct file_operations afs_proc_cells_fops = {
+static const struct file_operations afs_proc_cells_fops = {
.open = afs_proc_cells_open,
.read = seq_read,
.write = afs_proc_cells_write,
const char __user *buf,
size_t size, loff_t *_pos);
-static struct file_operations afs_proc_rootcell_fops = {
+static const struct file_operations afs_proc_rootcell_fops = {
.open = afs_proc_rootcell_open,
.read = afs_proc_rootcell_read,
.write = afs_proc_rootcell_write,
.show = afs_proc_cell_volumes_show,
};
-static struct file_operations afs_proc_cell_volumes_fops = {
+static const struct file_operations afs_proc_cell_volumes_fops = {
.open = afs_proc_cell_volumes_open,
.read = seq_read,
.llseek = seq_lseek,
.show = afs_proc_cell_vlservers_show,
};
-static struct file_operations afs_proc_cell_vlservers_fops = {
+static const struct file_operations afs_proc_cell_vlservers_fops = {
.open = afs_proc_cell_vlservers_open,
.read = seq_read,
.llseek = seq_lseek,
.show = afs_proc_cell_servers_show,
};
-static struct file_operations afs_proc_cell_servers_fops = {
+static const struct file_operations afs_proc_cell_servers_fops = {
.open = afs_proc_cell_servers_open,
.read = seq_read,
.llseek = seq_lseek,
extern struct inode_operations autofs_root_inode_operations;
extern struct inode_operations autofs_symlink_inode_operations;
-extern struct file_operations autofs_root_operations;
+extern const struct file_operations autofs_root_operations;
/* Initializing function */
;
dput(dentry);
- if ( may_umount(mnt) == 0 ) {
+ if ( may_umount(mnt) ) {
mntput(mnt);
DPRINTK(("autofs: signaling expire on %s\n", ent->name));
return ent; /* Expirable! */
static int autofs_root_mkdir(struct inode *,struct dentry *,int);
static int autofs_root_ioctl(struct inode *, struct file *,unsigned int,unsigned long);
-struct file_operations autofs_root_operations = {
+const struct file_operations autofs_root_operations = {
.read = generic_read_dir,
.readdir = autofs_root_readdir,
.ioctl = autofs_root_ioctl,
* linux/fs/autofs/autofs_i.h
*
* Copyright 1997-1998 Transmeta Corporation - All Rights Reserved
+ * Copyright 2005-2006 Ian Kent <raven@themaw.net>
*
* This file is part of the Linux kernel and is made available under
* the terms of the GNU General Public License, version 2, or at your
#define AUTOFS_SUPER_MAGIC 0x0187
-/*
- * If the daemon returns a negative response (AUTOFS_IOC_FAIL) then the
- * kernel will keep the negative response cached for up to the time given
- * here, although the time can be shorter if the kernel throws the dcache
- * entry away. This probably should be settable from user space.
- */
-#define AUTOFS_NEGATIVE_TIMEOUT (60*HZ) /* 1 minute */
-
/* Unified info structure. This is pointed to by both the dentry and
inode structures. Each file in the filesystem has an instance of this
structure. It holds a reference to the dentry, so dentries are never
struct autofs_sb_info *sbi;
unsigned long last_used;
+ atomic_t count;
mode_t mode;
size_t size;
int hash;
int len;
char *name;
+ u32 dev;
+ u64 ino;
+ uid_t uid;
+ gid_t gid;
+ pid_t pid;
+ pid_t tgid;
/* This is for status reporting upon return */
int status;
- atomic_t notified;
+ atomic_t notify;
atomic_t wait_ctr;
};
#define AUTOFS_SBI_MAGIC 0x6d4a556d
+#define AUTOFS_TYPE_INDIRECT 0x0001
+#define AUTOFS_TYPE_DIRECT 0x0002
+#define AUTOFS_TYPE_OFFSET 0x0004
+
struct autofs_sb_info {
u32 magic;
struct dentry *root;
+ int pipefd;
struct file *pipe;
pid_t oz_pgrp;
int catatonic;
int version;
int sub_version;
+ int min_proto;
+ int max_proto;
unsigned long exp_timeout;
+ unsigned int type;
int reghost_enabled;
int needs_reghost;
struct super_block *sb;
extern struct inode_operations autofs4_symlink_inode_operations;
extern struct inode_operations autofs4_dir_inode_operations;
extern struct inode_operations autofs4_root_inode_operations;
-extern struct file_operations autofs4_dir_operations;
-extern struct file_operations autofs4_root_operations;
+extern struct inode_operations autofs4_indirect_root_inode_operations;
+extern struct inode_operations autofs4_direct_root_inode_operations;
+extern const struct file_operations autofs4_dir_operations;
+extern const struct file_operations autofs4_root_operations;
/* Initializing function */
/* Queue management functions */
-enum autofs_notify
-{
- NFY_NONE,
- NFY_MOUNT,
- NFY_EXPIRE
-};
-
int autofs4_wait(struct autofs_sb_info *,struct dentry *, enum autofs_notify);
int autofs4_wait_release(struct autofs_sb_info *,autofs_wqt_t,int);
void autofs4_catatonic_mode(struct autofs_sb_info *);
return res;
}
+static inline u32 autofs4_get_dev(struct autofs_sb_info *sbi)
+{
+ return new_encode_dev(sbi->sb->s_dev);
+}
+
+static inline u64 autofs4_get_ino(struct autofs_sb_info *sbi)
+{
+ return sbi->sb->s_root->d_inode->i_ino;
+}
+
static inline int simple_positive(struct dentry *dentry)
{
return dentry->d_inode && !d_unhashed(dentry);
}
-static inline int simple_empty_nolock(struct dentry *dentry)
+static inline int __simple_empty(struct dentry *dentry)
{
struct dentry *child;
int ret = 0;
out:
return ret;
}
+
+void autofs4_dentry_release(struct dentry *);
+
*
* Copyright 1997-1998 Transmeta Corporation -- All Rights Reserved
* Copyright 1999-2000 Jeremy Fitzhardinge <jeremy@goop.org>
- * Copyright 2001-2003 Ian Kent <raven@themaw.net>
+ * Copyright 2001-2006 Ian Kent <raven@themaw.net>
*
* This file is part of the Linux kernel and is made available under
* the terms of the GNU General Public License, version 2, or at your
static unsigned long now;
-/* Check if a dentry can be expired return 1 if it can else return 0 */
+/* Check if a dentry can be expired */
static inline int autofs4_can_expire(struct dentry *dentry,
unsigned long timeout, int do_now)
{
attempts if expire fails the first time */
ino->last_used = now;
}
-
return 1;
}
-/* Check a mount point for busyness return 1 if not busy, otherwise */
-static int autofs4_check_mount(struct vfsmount *mnt, struct dentry *dentry)
+/* Check a mount point for busyness */
+static int autofs4_mount_busy(struct vfsmount *mnt, struct dentry *dentry)
{
- int status = 0;
+ struct dentry *top = dentry;
+ int status = 1;
DPRINTK("dentry %p %.*s",
dentry, (int)dentry->d_name.len, dentry->d_name.name);
if (is_autofs4_dentry(dentry))
goto done;
- /* The big question */
- if (may_umount_tree(mnt) == 0)
- status = 1;
+ /* Update the expiry counter if fs is busy */
+ if (!may_umount_tree(mnt)) {
+ struct autofs_info *ino = autofs4_dentry_ino(top);
+ ino->last_used = jiffies;
+ goto done;
+ }
+
+ status = 0;
done:
DPRINTK("returning = %d", status);
mntput(mnt);
return status;
}
+/*
+ * Calculate next entry in top down tree traversal.
+ * From next_mnt in namespace.c - elegant.
+ */
+static struct dentry *next_dentry(struct dentry *p, struct dentry *root)
+{
+ struct list_head *next = p->d_subdirs.next;
+
+ if (next == &p->d_subdirs) {
+ while (1) {
+ if (p == root)
+ return NULL;
+ next = p->d_u.d_child.next;
+ if (next != &p->d_parent->d_subdirs)
+ break;
+ p = p->d_parent;
+ }
+ }
+ return list_entry(next, struct dentry, d_u.d_child);
+}
+
+/*
+ * Check a direct mount point for busyness.
+ * Direct mounts have similar expiry semantics to tree mounts.
+ * The tree is not busy iff no mountpoints are busy and there are no
+ * autofs submounts.
+ */
+static int autofs4_direct_busy(struct vfsmount *mnt,
+ struct dentry *top,
+ unsigned long timeout,
+ int do_now)
+{
+ DPRINTK("top %p %.*s",
+ top, (int) top->d_name.len, top->d_name.name);
+
+ /* If it's busy update the expiry counters */
+ if (!may_umount_tree(mnt)) {
+ struct autofs_info *ino = autofs4_dentry_ino(top);
+ if (ino)
+ ino->last_used = jiffies;
+ return 1;
+ }
+
+ /* Timeout of a direct mount is determined by its top dentry */
+ if (!autofs4_can_expire(top, timeout, do_now))
+ return 1;
+
+ return 0;
+}
+
/* Check a directory tree of mount points for busyness
* The tree is not busy iff no mountpoints are busy
- * Return 1 if the tree is busy or 0 otherwise
*/
-static int autofs4_check_tree(struct vfsmount *mnt,
- struct dentry *top,
- unsigned long timeout,
- int do_now)
+static int autofs4_tree_busy(struct vfsmount *mnt,
+ struct dentry *top,
+ unsigned long timeout,
+ int do_now)
{
- struct dentry *this_parent = top;
- struct list_head *next;
+ struct autofs_info *top_ino = autofs4_dentry_ino(top);
+ struct dentry *p;
- DPRINTK("parent %p %.*s",
+ DPRINTK("top %p %.*s",
top, (int)top->d_name.len, top->d_name.name);
/* Negative dentry - give up */
if (!simple_positive(top))
- return 0;
-
- /* Timeout of a tree mount is determined by its top dentry */
- if (!autofs4_can_expire(top, timeout, do_now))
- return 0;
-
- /* Is someone visiting anywhere in the tree ? */
- if (may_umount_tree(mnt))
- return 0;
+ return 1;
spin_lock(&dcache_lock);
-repeat:
- next = this_parent->d_subdirs.next;
-resume:
- while (next != &this_parent->d_subdirs) {
- struct dentry *dentry = list_entry(next, struct dentry, d_u.d_child);
-
+ for (p = top; p; p = next_dentry(p, top)) {
/* Negative dentry - give up */
- if (!simple_positive(dentry)) {
- next = next->next;
+ if (!simple_positive(p))
continue;
- }
DPRINTK("dentry %p %.*s",
- dentry, (int)dentry->d_name.len, dentry->d_name.name);
-
- if (!simple_empty_nolock(dentry)) {
- this_parent = dentry;
- goto repeat;
- }
+ p, (int) p->d_name.len, p->d_name.name);
- dentry = dget(dentry);
+ p = dget(p);
spin_unlock(&dcache_lock);
- if (d_mountpoint(dentry)) {
- /* First busy => tree busy */
- if (!autofs4_check_mount(mnt, dentry)) {
- dput(dentry);
- return 0;
+ /*
+ * Is someone visiting anywhere in the subtree ?
+ * If there's no mount we need to check the usage
+ * count for the autofs dentry.
+ * If the fs is busy update the expiry counter.
+ */
+ if (d_mountpoint(p)) {
+ if (autofs4_mount_busy(mnt, p)) {
+ top_ino->last_used = jiffies;
+ dput(p);
+ return 1;
+ }
+ } else {
+ struct autofs_info *ino = autofs4_dentry_ino(p);
+ unsigned int ino_count = atomic_read(&ino->count);
+
+ /* allow for dget above and top is already dgot */
+ if (p == top)
+ ino_count += 2;
+ else
+ ino_count++;
+
+ if (atomic_read(&p->d_count) > ino_count) {
+ top_ino->last_used = jiffies;
+ dput(p);
+ return 1;
}
}
-
- dput(dentry);
+ dput(p);
spin_lock(&dcache_lock);
- next = next->next;
- }
-
- if (this_parent != top) {
- next = this_parent->d_u.d_child.next;
- this_parent = this_parent->d_parent;
- goto resume;
}
spin_unlock(&dcache_lock);
- return 1;
+ /* Timeout of a tree mount is ultimately determined by its top dentry */
+ if (!autofs4_can_expire(top, timeout, do_now))
+ return 1;
+
+ return 0;
}
static struct dentry *autofs4_check_leaves(struct vfsmount *mnt,
unsigned long timeout,
int do_now)
{
- struct dentry *this_parent = parent;
- struct list_head *next;
+ struct dentry *p;
DPRINTK("parent %p %.*s",
parent, (int)parent->d_name.len, parent->d_name.name);
spin_lock(&dcache_lock);
-repeat:
- next = this_parent->d_subdirs.next;
-resume:
- while (next != &this_parent->d_subdirs) {
- struct dentry *dentry = list_entry(next, struct dentry, d_u.d_child);
-
+ for (p = parent; p; p = next_dentry(p, parent)) {
/* Negative dentry - give up */
- if (!simple_positive(dentry)) {
- next = next->next;
+ if (!simple_positive(p))
continue;
- }
DPRINTK("dentry %p %.*s",
- dentry, (int)dentry->d_name.len, dentry->d_name.name);
-
- if (!list_empty(&dentry->d_subdirs)) {
- this_parent = dentry;
- goto repeat;
- }
+ p, (int) p->d_name.len, p->d_name.name);
- dentry = dget(dentry);
+ p = dget(p);
spin_unlock(&dcache_lock);
- if (d_mountpoint(dentry)) {
- /* Can we expire this guy */
- if (!autofs4_can_expire(dentry, timeout, do_now))
- goto cont;
-
+ if (d_mountpoint(p)) {
/* Can we umount this guy */
- if (autofs4_check_mount(mnt, dentry))
- return dentry;
+ if (autofs4_mount_busy(mnt, p))
+ goto cont;
+ /* Can we expire this guy */
+ if (autofs4_can_expire(p, timeout, do_now))
+ return p;
}
cont:
- dput(dentry);
+ dput(p);
spin_lock(&dcache_lock);
- next = next->next;
}
+ spin_unlock(&dcache_lock);
+ return NULL;
+}
+
+/* Check if we can expire a direct mount (possibly a tree) */
+static struct dentry *autofs4_expire_direct(struct super_block *sb,
+ struct vfsmount *mnt,
+ struct autofs_sb_info *sbi,
+ int how)
+{
+ unsigned long timeout;
+ struct dentry *root = dget(sb->s_root);
+ int do_now = how & AUTOFS_EXP_IMMEDIATE;
+
+ if (!sbi->exp_timeout || !root)
+ return NULL;
+
+ now = jiffies;
+ timeout = sbi->exp_timeout;
+
+ /* Lock the tree as we must expire as a whole */
+ spin_lock(&sbi->fs_lock);
+ if (!autofs4_direct_busy(mnt, root, timeout, do_now)) {
+ struct autofs_info *ino = autofs4_dentry_ino(root);
- if (this_parent != parent) {
- next = this_parent->d_u.d_child.next;
- this_parent = this_parent->d_parent;
- goto resume;
+ /* Set this flag early to catch sys_chdir and the like */
+ ino->flags |= AUTOFS_INF_EXPIRING;
+ spin_unlock(&sbi->fs_lock);
+ return root;
}
- spin_unlock(&dcache_lock);
+ spin_unlock(&sbi->fs_lock);
+ dput(root);
return NULL;
}
* - it is unused by any user process
* - it has been unused for exp_timeout time
*/
-static struct dentry *autofs4_expire(struct super_block *sb,
- struct vfsmount *mnt,
- struct autofs_sb_info *sbi,
- int how)
+static struct dentry *autofs4_expire_indirect(struct super_block *sb,
+ struct vfsmount *mnt,
+ struct autofs_sb_info *sbi,
+ int how)
{
unsigned long timeout;
struct dentry *root = sb->s_root;
struct dentry *dentry = list_entry(next, struct dentry, d_u.d_child);
/* Negative dentry - give up */
- if ( !simple_positive(dentry) ) {
+ if (!simple_positive(dentry)) {
next = next->next;
continue;
}
dentry = dget(dentry);
spin_unlock(&dcache_lock);
- /* Case 1: indirect mount or top level direct mount */
+ /*
+ * Case 1: (i) indirect mount or top level pseudo direct mount
+ * (autofs-4.1).
+ * (ii) indirect mount with offset mount, check the "/"
+ * offset (autofs-5.0+).
+ */
if (d_mountpoint(dentry)) {
DPRINTK("checking mountpoint %p %.*s",
dentry, (int)dentry->d_name.len, dentry->d_name.name);
- /* Can we expire this guy */
- if (!autofs4_can_expire(dentry, timeout, do_now))
+ /* Can we umount this guy */
+ if (autofs4_mount_busy(mnt, dentry))
goto next;
- /* Can we umount this guy */
- if (autofs4_check_mount(mnt, dentry)) {
+ /* Can we expire this guy */
+ if (autofs4_can_expire(dentry, timeout, do_now)) {
expired = dentry;
break;
}
goto next;
}
- if ( simple_empty(dentry) )
+ if (simple_empty(dentry))
goto next;
/* Case 2: tree mount, expire iff entire tree is not busy */
if (!exp_leaves) {
/* Lock the tree as we must expire as a whole */
spin_lock(&sbi->fs_lock);
- if (autofs4_check_tree(mnt, dentry, timeout, do_now)) {
+ if (!autofs4_tree_busy(mnt, dentry, timeout, do_now)) {
struct autofs_info *inf = autofs4_dentry_ino(dentry);
/* Set this flag early to catch sys_chdir and the like */
break;
}
spin_unlock(&sbi->fs_lock);
- /* Case 3: direct mount, expire individual leaves */
+ /*
+ * Case 3: pseudo direct mount, expire individual leaves
+ * (autofs-4.1).
+ */
} else {
expired = autofs4_check_leaves(mnt, dentry, timeout, do_now);
if (expired) {
next = next->next;
}
- if ( expired ) {
+ if (expired) {
DPRINTK("returning %p %.*s",
expired, (int)expired->d_name.len, expired->d_name.name);
spin_lock(&dcache_lock);
pkt.hdr.proto_version = sbi->version;
pkt.hdr.type = autofs_ptype_expire;
- if ((dentry = autofs4_expire(sb, mnt, sbi, 0)) == NULL)
+ if ((dentry = autofs4_expire_indirect(sb, mnt, sbi, 0)) == NULL)
return -EAGAIN;
pkt.len = dentry->d_name.len;
if (arg && get_user(do_now, arg))
return -EFAULT;
- if ((dentry = autofs4_expire(sb, mnt, sbi, do_now)) != NULL) {
- struct autofs_info *de_info = autofs4_dentry_ino(dentry);
+ if (sbi->type & AUTOFS_TYPE_DIRECT)
+ dentry = autofs4_expire_direct(sb, mnt, sbi, do_now);
+ else
+ dentry = autofs4_expire_indirect(sb, mnt, sbi, do_now);
+
+ if (dentry) {
+ struct autofs_info *ino = autofs4_dentry_ino(dentry);
/* This is synchronous because it makes the daemon a
little easier */
- de_info->flags |= AUTOFS_INF_EXPIRING;
+ ino->flags |= AUTOFS_INF_EXPIRING;
ret = autofs4_wait(sbi, dentry, NFY_EXPIRE);
- de_info->flags &= ~AUTOFS_INF_EXPIRING;
+ ino->flags &= ~AUTOFS_INF_EXPIRING;
dput(dentry);
}
-
+
return ret;
}
* linux/fs/autofs/inode.c
*
* Copyright 1997-1998 Transmeta Corporation -- All Rights Reserved
+ * Copyright 2005-2006 Ian Kent <raven@themaw.net>
*
* This file is part of the Linux kernel and is made available under
* the terms of the GNU General Public License, version 2, or at your
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/file.h>
+#include <linux/seq_file.h>
#include <linux/pagemap.h>
#include <linux/parser.h>
#include <linux/bitops.h>
ino->size = 0;
ino->last_used = jiffies;
+ atomic_set(&ino->count, 0);
ino->sbi = sbi;
void autofs4_free_ino(struct autofs_info *ino)
{
+ struct autofs_info *p_ino;
+
if (ino->dentry) {
ino->dentry->d_fsdata = NULL;
- if (ino->dentry->d_inode)
+ if (ino->dentry->d_inode) {
+ struct dentry *parent = ino->dentry->d_parent;
+ if (atomic_dec_and_test(&ino->count)) {
+ p_ino = autofs4_dentry_ino(parent);
+ if (p_ino && parent != ino->dentry)
+ atomic_dec(&p_ino->count);
+ }
dput(ino->dentry);
+ }
ino->dentry = NULL;
}
if (ino->free)
autofs4_catatonic_mode(sbi); /* Free wait queues, close pipe */
/* Clean up and release dangling references */
- if (sbi)
- autofs4_force_release(sbi);
+ autofs4_force_release(sbi);
kfree(sbi);
DPRINTK("shutting down");
}
+static int autofs4_show_options(struct seq_file *m, struct vfsmount *mnt)
+{
+ struct autofs_sb_info *sbi = autofs4_sbi(mnt->mnt_sb);
+
+ if (!sbi)
+ return 0;
+
+ seq_printf(m, ",fd=%d", sbi->pipefd);
+ seq_printf(m, ",pgrp=%d", sbi->oz_pgrp);
+ seq_printf(m, ",timeout=%lu", sbi->exp_timeout/HZ);
+ seq_printf(m, ",minproto=%d", sbi->min_proto);
+ seq_printf(m, ",maxproto=%d", sbi->max_proto);
+
+ if (sbi->type & AUTOFS_TYPE_OFFSET)
+ seq_printf(m, ",offset");
+ else if (sbi->type & AUTOFS_TYPE_DIRECT)
+ seq_printf(m, ",direct");
+ else
+ seq_printf(m, ",indirect");
+
+ return 0;
+}
+
static struct super_operations autofs4_sops = {
.put_super = autofs4_put_super,
.statfs = simple_statfs,
+ .show_options = autofs4_show_options,
};
-enum {Opt_err, Opt_fd, Opt_uid, Opt_gid, Opt_pgrp, Opt_minproto, Opt_maxproto};
+enum {Opt_err, Opt_fd, Opt_uid, Opt_gid, Opt_pgrp, Opt_minproto, Opt_maxproto,
+ Opt_indirect, Opt_direct, Opt_offset};
static match_table_t tokens = {
{Opt_fd, "fd=%u"},
{Opt_pgrp, "pgrp=%u"},
{Opt_minproto, "minproto=%u"},
{Opt_maxproto, "maxproto=%u"},
+ {Opt_indirect, "indirect"},
+ {Opt_direct, "direct"},
+ {Opt_offset, "offset"},
{Opt_err, NULL}
};
static int parse_options(char *options, int *pipefd, uid_t *uid, gid_t *gid,
- pid_t *pgrp, int *minproto, int *maxproto)
+ pid_t *pgrp, unsigned int *type,
+ int *minproto, int *maxproto)
{
char *p;
substring_t args[MAX_OPT_ARGS];
return 1;
*maxproto = option;
break;
+ case Opt_indirect:
+ *type = AUTOFS_TYPE_INDIRECT;
+ break;
+ case Opt_direct:
+ *type = AUTOFS_TYPE_DIRECT;
+ break;
+ case Opt_offset:
+ *type = AUTOFS_TYPE_DIRECT | AUTOFS_TYPE_OFFSET;
+ break;
default:
return 1;
}
return ino;
}
+static struct dentry_operations autofs4_sb_dentry_operations = {
+ .d_release = autofs4_dentry_release,
+};
+
int autofs4_fill_super(struct super_block *s, void *data, int silent)
{
struct inode * root_inode;
int pipefd;
struct autofs_sb_info *sbi;
struct autofs_info *ino;
- int minproto, maxproto;
sbi = (struct autofs_sb_info *) kmalloc(sizeof(*sbi), GFP_KERNEL);
if ( !sbi )
s->s_fs_info = sbi;
sbi->magic = AUTOFS_SBI_MAGIC;
sbi->root = NULL;
+ sbi->pipefd = -1;
sbi->catatonic = 0;
sbi->exp_timeout = 0;
sbi->oz_pgrp = process_group(current);
sbi->sb = s;
sbi->version = 0;
sbi->sub_version = 0;
+ sbi->type = 0;
+ sbi->min_proto = 0;
+ sbi->max_proto = 0;
mutex_init(&sbi->wq_mutex);
spin_lock_init(&sbi->fs_lock);
sbi->queues = NULL;
if (!ino)
goto fail_free;
root_inode = autofs4_get_inode(s, ino);
- kfree(ino);
if (!root_inode)
- goto fail_free;
+ goto fail_ino;
- root_inode->i_op = &autofs4_root_inode_operations;
- root_inode->i_fop = &autofs4_root_operations;
root = d_alloc_root(root_inode);
- pipe = NULL;
-
if (!root)
goto fail_iput;
+ pipe = NULL;
+
+ root->d_op = &autofs4_sb_dentry_operations;
+ root->d_fsdata = ino;
/* Can this call block? */
if (parse_options(data, &pipefd,
&root_inode->i_uid, &root_inode->i_gid,
- &sbi->oz_pgrp,
- &minproto, &maxproto)) {
+ &sbi->oz_pgrp, &sbi->type,
+ &sbi->min_proto, &sbi->max_proto)) {
printk("autofs: called with bogus options\n");
goto fail_dput;
}
+ root_inode->i_fop = &autofs4_root_operations;
+ root_inode->i_op = sbi->type & AUTOFS_TYPE_DIRECT ?
+ &autofs4_direct_root_inode_operations :
+ &autofs4_indirect_root_inode_operations;
+
/* Couldn't this be tested earlier? */
- if (maxproto < AUTOFS_MIN_PROTO_VERSION ||
- minproto > AUTOFS_MAX_PROTO_VERSION) {
+ if (sbi->max_proto < AUTOFS_MIN_PROTO_VERSION ||
+ sbi->min_proto > AUTOFS_MAX_PROTO_VERSION) {
printk("autofs: kernel does not match daemon version "
"daemon (%d, %d) kernel (%d, %d)\n",
- minproto, maxproto,
+ sbi->min_proto, sbi->max_proto,
AUTOFS_MIN_PROTO_VERSION, AUTOFS_MAX_PROTO_VERSION);
goto fail_dput;
}
- sbi->version = maxproto > AUTOFS_MAX_PROTO_VERSION ? AUTOFS_MAX_PROTO_VERSION : maxproto;
+ /* Establish highest kernel protocol version */
+ if (sbi->max_proto > AUTOFS_MAX_PROTO_VERSION)
+ sbi->version = AUTOFS_MAX_PROTO_VERSION;
+ else
+ sbi->version = sbi->max_proto;
sbi->sub_version = AUTOFS_PROTO_SUBVERSION;
DPRINTK("pipe fd = %d, pgrp = %u", pipefd, sbi->oz_pgrp);
if ( !pipe->f_op || !pipe->f_op->write )
goto fail_fput;
sbi->pipe = pipe;
+ sbi->pipefd = pipefd;
/*
* Take a reference to the root dentry so we get a chance to
fail_iput:
printk("autofs: get root dentry failed\n");
iput(root_inode);
+fail_ino:
+ kfree(ino);
fail_free:
kfree(sbi);
fail_unlock:
*
* Copyright 1997-1998 Transmeta Corporation -- All Rights Reserved
* Copyright 1999-2000 Jeremy Fitzhardinge <jeremy@goop.org>
- * Copyright 2001-2003 Ian Kent <raven@themaw.net>
+ * Copyright 2001-2006 Ian Kent <raven@themaw.net>
*
* This file is part of the Linux kernel and is made available under
* the terms of the GNU General Public License, version 2, or at your
static int autofs4_dir_readdir(struct file * filp, void * dirent, filldir_t filldir);
static int autofs4_root_readdir(struct file * filp, void * dirent, filldir_t filldir);
static struct dentry *autofs4_lookup(struct inode *,struct dentry *, struct nameidata *);
-static int autofs4_dcache_readdir(struct file *, void *, filldir_t);
+static void *autofs4_follow_link(struct dentry *, struct nameidata *);
-struct file_operations autofs4_root_operations = {
+const struct file_operations autofs4_root_operations = {
.open = dcache_dir_open,
.release = dcache_dir_close,
.read = generic_read_dir,
.ioctl = autofs4_root_ioctl,
};
-struct file_operations autofs4_dir_operations = {
+const struct file_operations autofs4_dir_operations = {
.open = autofs4_dir_open,
.release = autofs4_dir_close,
.read = generic_read_dir,
.readdir = autofs4_dir_readdir,
};
-struct inode_operations autofs4_root_inode_operations = {
+struct inode_operations autofs4_indirect_root_inode_operations = {
.lookup = autofs4_lookup,
.unlink = autofs4_dir_unlink,
.symlink = autofs4_dir_symlink,
.rmdir = autofs4_dir_rmdir,
};
+struct inode_operations autofs4_direct_root_inode_operations = {
+ .lookup = autofs4_lookup,
+ .unlink = autofs4_dir_unlink,
+ .mkdir = autofs4_dir_mkdir,
+ .rmdir = autofs4_dir_rmdir,
+ .follow_link = autofs4_follow_link,
+};
+
struct inode_operations autofs4_dir_inode_operations = {
.lookup = autofs4_lookup,
.unlink = autofs4_dir_unlink,
DPRINTK("needs_reghost = %d", sbi->needs_reghost);
- return autofs4_dcache_readdir(file, dirent, filldir);
-}
-
-/* Update usage from here to top of tree, so that scan of
- top-level directories will give a useful result */
-static void autofs4_update_usage(struct vfsmount *mnt, struct dentry *dentry)
-{
- struct dentry *top = dentry->d_sb->s_root;
-
- spin_lock(&dcache_lock);
- for(; dentry != top; dentry = dentry->d_parent) {
- struct autofs_info *ino = autofs4_dentry_ino(dentry);
-
- if (ino) {
- touch_atime(mnt, dentry);
- ino->last_used = jiffies;
- }
- }
- spin_unlock(&dcache_lock);
-}
-
-/*
- * From 2.4 kernel readdir.c
- */
-static int autofs4_dcache_readdir(struct file * filp, void * dirent, filldir_t filldir)
-{
- int i;
- struct dentry *dentry = filp->f_dentry;
-
- i = filp->f_pos;
- switch (i) {
- case 0:
- if (filldir(dirent, ".", 1, i, dentry->d_inode->i_ino, DT_DIR) < 0)
- break;
- i++;
- filp->f_pos++;
- /* fallthrough */
- case 1:
- if (filldir(dirent, "..", 2, i, dentry->d_parent->d_inode->i_ino, DT_DIR) < 0)
- break;
- i++;
- filp->f_pos++;
- /* fallthrough */
- default: {
- struct list_head *list;
- int j = i-2;
-
- spin_lock(&dcache_lock);
- list = dentry->d_subdirs.next;
-
- for (;;) {
- if (list == &dentry->d_subdirs) {
- spin_unlock(&dcache_lock);
- return 0;
- }
- if (!j)
- break;
- j--;
- list = list->next;
- }
-
- while(1) {
- struct dentry *de = list_entry(list,
- struct dentry, d_u.d_child);
-
- if (!d_unhashed(de) && de->d_inode) {
- spin_unlock(&dcache_lock);
- if (filldir(dirent, de->d_name.name, de->d_name.len, filp->f_pos, de->d_inode->i_ino, DT_UNKNOWN) < 0)
- break;
- spin_lock(&dcache_lock);
- }
- filp->f_pos++;
- list = list->next;
- if (list != &dentry->d_subdirs)
- continue;
- spin_unlock(&dcache_lock);
- break;
- }
- }
- }
- return 0;
+ return dcache_readdir(file, dirent, filldir);
}
static int autofs4_dir_open(struct inode *inode, struct file *file)
struct dentry *dentry = file->f_dentry;
struct vfsmount *mnt = file->f_vfsmnt;
struct autofs_sb_info *sbi = autofs4_sbi(dentry->d_sb);
+ struct dentry *cursor;
int status;
+ status = dcache_dir_open(inode, file);
+ if (status)
+ goto out;
+
+ cursor = file->private_data;
+ cursor->d_fsdata = NULL;
+
DPRINTK("file=%p dentry=%p %.*s",
file, dentry, dentry->d_name.len, dentry->d_name.name);
if (autofs4_ispending(dentry)) {
DPRINTK("dentry busy");
- return -EBUSY;
+ dcache_dir_close(inode, file);
+ status = -EBUSY;
+ goto out;
}
+ status = -ENOENT;
if (!d_mountpoint(dentry) && dentry->d_op && dentry->d_op->d_revalidate) {
struct nameidata nd;
- int empty;
+ int empty, ret;
/* In case there are stale directory dentrys from a failed mount */
spin_lock(&dcache_lock);
if (!empty)
d_invalidate(dentry);
- nd.dentry = dentry;
- nd.mnt = mnt;
nd.flags = LOOKUP_DIRECTORY;
- status = (dentry->d_op->d_revalidate)(dentry, &nd);
+ ret = (dentry->d_op->d_revalidate)(dentry, &nd);
- if (!status)
- return -ENOENT;
+ if (!ret) {
+ dcache_dir_close(inode, file);
+ goto out;
+ }
}
if (d_mountpoint(dentry)) {
if (!autofs4_follow_mount(&fp_mnt, &fp_dentry)) {
dput(fp_dentry);
mntput(fp_mnt);
- return -ENOENT;
+ dcache_dir_close(inode, file);
+ goto out;
}
fp = dentry_open(fp_dentry, fp_mnt, file->f_flags);
status = PTR_ERR(fp);
if (IS_ERR(fp)) {
- file->private_data = NULL;
- return status;
+ dcache_dir_close(inode, file);
+ goto out;
}
- file->private_data = fp;
+ cursor->d_fsdata = fp;
}
-out:
return 0;
+out:
+ return status;
}
static int autofs4_dir_close(struct inode *inode, struct file *file)
{
struct dentry *dentry = file->f_dentry;
struct autofs_sb_info *sbi = autofs4_sbi(dentry->d_sb);
+ struct dentry *cursor = file->private_data;
+ int status = 0;
DPRINTK("file=%p dentry=%p %.*s",
file, dentry, dentry->d_name.len, dentry->d_name.name);
if (autofs4_ispending(dentry)) {
DPRINTK("dentry busy");
- return -EBUSY;
+ status = -EBUSY;
+ goto out;
}
if (d_mountpoint(dentry)) {
- struct file *fp = file->private_data;
-
- if (!fp)
- return -ENOENT;
-
+ struct file *fp = cursor->d_fsdata;
+ if (!fp) {
+ status = -ENOENT;
+ goto out;
+ }
filp_close(fp, current->files);
- file->private_data = NULL;
}
out:
- return 0;
+ dcache_dir_close(inode, file);
+ return status;
}
static int autofs4_dir_readdir(struct file *file, void *dirent, filldir_t filldir)
{
struct dentry *dentry = file->f_dentry;
struct autofs_sb_info *sbi = autofs4_sbi(dentry->d_sb);
+ struct dentry *cursor = file->private_data;
int status;
DPRINTK("file=%p dentry=%p %.*s",
}
if (d_mountpoint(dentry)) {
- struct file *fp = file->private_data;
+ struct file *fp = cursor->d_fsdata;
if (!fp)
return -ENOENT;
return status;
}
out:
- return autofs4_dcache_readdir(file, dirent, filldir);
+ return dcache_readdir(file, dirent, filldir);
}
-static int try_to_fill_dentry(struct vfsmount *mnt, struct dentry *dentry, int flags)
+static int try_to_fill_dentry(struct dentry *dentry, int flags)
{
- struct super_block *sb = mnt->mnt_sb;
- struct autofs_sb_info *sbi = autofs4_sbi(sb);
- struct autofs_info *de_info = autofs4_dentry_ino(dentry);
+ struct autofs_sb_info *sbi = autofs4_sbi(dentry->d_sb);
+ struct autofs_info *ino = autofs4_dentry_ino(dentry);
int status = 0;
/* Block on any pending expiry here; invalidate the dentry
when expiration is done to trigger mount request with a new
dentry */
- if (de_info && (de_info->flags & AUTOFS_INF_EXPIRING)) {
+ if (ino && (ino->flags & AUTOFS_INF_EXPIRING)) {
DPRINTK("waiting for expire %p name=%.*s",
dentry, dentry->d_name.len, dentry->d_name.name);
status = autofs4_wait(sbi, dentry, NFY_NONE);
-
+
DPRINTK("expire done status=%d", status);
-
+
/*
* If the directory still exists the mount request must
* continue otherwise it can't be followed at the right
*/
status = d_invalidate(dentry);
if (status != -EBUSY)
- return 0;
+ return -ENOENT;
}
DPRINTK("dentry=%p %.*s ino=%p",
dentry, dentry->d_name.len, dentry->d_name.name, dentry->d_inode);
- /* Wait for a pending mount, triggering one if there isn't one already */
+ /*
+ * Wait for a pending mount, triggering one if there
+ * isn't one already
+ */
if (dentry->d_inode == NULL) {
DPRINTK("waiting for mount name=%.*s",
dentry->d_name.len, dentry->d_name.name);
status = autofs4_wait(sbi, dentry, NFY_MOUNT);
-
+
DPRINTK("mount done status=%d", status);
if (status && dentry->d_inode)
- return 0; /* Try to get the kernel to invalidate this dentry */
-
+ return status; /* Try to get the kernel to invalidate this dentry */
+
/* Turn this into a real negative dentry? */
if (status == -ENOENT) {
- dentry->d_time = jiffies + AUTOFS_NEGATIVE_TIMEOUT;
spin_lock(&dentry->d_lock);
dentry->d_flags &= ~DCACHE_AUTOFS_PENDING;
spin_unlock(&dentry->d_lock);
- return 1;
+ return status;
} else if (status) {
/* Return a negative dentry, but leave it "pending" */
- return 1;
+ return status;
}
/* Trigger mount for path component or follow link */
} else if (flags & (LOOKUP_CONTINUE | LOOKUP_DIRECTORY) ||
spin_lock(&dentry->d_lock);
dentry->d_flags &= ~DCACHE_AUTOFS_PENDING;
spin_unlock(&dentry->d_lock);
- return 0;
+ return status;
}
}
- /* We don't update the usages for the autofs daemon itself, this
- is necessary for recursive autofs mounts */
- if (!autofs4_oz_mode(sbi))
- autofs4_update_usage(mnt, dentry);
+ /* Initialize expiry counter after successful mount */
+ if (ino)
+ ino->last_used = jiffies;
spin_lock(&dentry->d_lock);
dentry->d_flags &= ~DCACHE_AUTOFS_PENDING;
spin_unlock(&dentry->d_lock);
- return 1;
+ return status;
+}
+
+/* For autofs direct mounts the follow link triggers the mount */
+static void *autofs4_follow_link(struct dentry *dentry, struct nameidata *nd)
+{
+ struct autofs_sb_info *sbi = autofs4_sbi(dentry->d_sb);
+ int oz_mode = autofs4_oz_mode(sbi);
+ unsigned int lookup_type;
+ int status;
+
+ DPRINTK("dentry=%p %.*s oz_mode=%d nd->flags=%d",
+ dentry, dentry->d_name.len, dentry->d_name.name, oz_mode,
+ nd->flags);
+
+ /* If it's our master or we shouldn't trigger a mount we're done */
+ lookup_type = nd->flags & (LOOKUP_CONTINUE | LOOKUP_DIRECTORY);
+ if (oz_mode || !lookup_type)
+ goto done;
+
+ /*
+ * If a request is pending wait for it.
+ * If it's a mount then it won't be expired till at least
+ * a liitle later and if it's an expire then we might need
+ * to mount it again.
+ */
+ if (autofs4_ispending(dentry)) {
+ DPRINTK("waiting for active request %p name=%.*s",
+ dentry, dentry->d_name.len, dentry->d_name.name);
+
+ status = autofs4_wait(sbi, dentry, NFY_NONE);
+
+ DPRINTK("request done status=%d", status);
+ }
+
+ /*
+ * If the dentry contains directories then it is an
+ * autofs multi-mount with no root mount offset. So
+ * don't try to mount it again.
+ */
+ spin_lock(&dcache_lock);
+ if (!d_mountpoint(dentry) && list_empty(&dentry->d_subdirs)) {
+ spin_unlock(&dcache_lock);
+
+ status = try_to_fill_dentry(dentry, 0);
+ if (status)
+ goto out_error;
+
+ /*
+ * The mount succeeded but if there is no root mount
+ * it must be an autofs multi-mount with no root offset
+ * so we don't need to follow the mount.
+ */
+ if (d_mountpoint(dentry)) {
+ if (!autofs4_follow_mount(&nd->mnt, &nd->dentry)) {
+ status = -ENOENT;
+ goto out_error;
+ }
+ }
+
+ goto done;
+ }
+ spin_unlock(&dcache_lock);
+
+done:
+ return NULL;
+
+out_error:
+ path_release(nd);
+ return ERR_PTR(status);
}
/*
* yet completely filled in, and revalidate has to delay such
* lookups..
*/
-static int autofs4_revalidate(struct dentry * dentry, struct nameidata *nd)
+static int autofs4_revalidate(struct dentry *dentry, struct nameidata *nd)
{
- struct inode * dir = dentry->d_parent->d_inode;
+ struct inode *dir = dentry->d_parent->d_inode;
struct autofs_sb_info *sbi = autofs4_sbi(dir->i_sb);
int oz_mode = autofs4_oz_mode(sbi);
int flags = nd ? nd->flags : 0;
- int status = 1;
+ int status = 0;
/* Pending dentry */
if (autofs4_ispending(dentry)) {
if (!oz_mode)
- status = try_to_fill_dentry(nd->mnt, dentry, flags);
- return status;
+ status = try_to_fill_dentry(dentry, flags);
+ return !status;
}
/* Negative dentry.. invalidate if "old" */
if (dentry->d_inode == NULL)
- return (dentry->d_time - jiffies <= AUTOFS_NEGATIVE_TIMEOUT);
+ return 0;
/* Check for a non-mountpoint directory with no contents */
spin_lock(&dcache_lock);
if (S_ISDIR(dentry->d_inode->i_mode) &&
!d_mountpoint(dentry) &&
- list_empty(&dentry->d_subdirs)) {
+ __simple_empty(dentry)) {
DPRINTK("dentry=%p %.*s, emptydir",
dentry, dentry->d_name.len, dentry->d_name.name);
spin_unlock(&dcache_lock);
if (!oz_mode)
- status = try_to_fill_dentry(nd->mnt, dentry, flags);
- return status;
+ status = try_to_fill_dentry(dentry, flags);
+ return !status;
}
spin_unlock(&dcache_lock);
- /* Update the usage list */
- if (!oz_mode)
- autofs4_update_usage(nd->mnt, dentry);
-
return 1;
}
-static void autofs4_dentry_release(struct dentry *de)
+void autofs4_dentry_release(struct dentry *de)
{
struct autofs_info *inf;
DPRINTK("name = %.*s",
dentry->d_name.len, dentry->d_name.name);
+ /* File name too long to exist */
if (dentry->d_name.len > NAME_MAX)
- return ERR_PTR(-ENAMETOOLONG);/* File name too long to exist */
+ return ERR_PTR(-ENAMETOOLONG);
sbi = autofs4_sbi(dir->i_sb);
-
oz_mode = autofs4_oz_mode(sbi);
+
DPRINTK("pid = %u, pgrp = %u, catatonic = %d, oz_mode = %d",
current->pid, process_group(current), sbi->catatonic, oz_mode);
* doesn't do the right thing for all system calls, but it should
* be OK for the operations we permit from an autofs.
*/
- if ( dentry->d_inode && d_unhashed(dentry) )
+ if (dentry->d_inode && d_unhashed(dentry))
return ERR_PTR(-ENOENT);
return NULL;
{
struct autofs_sb_info *sbi = autofs4_sbi(dir->i_sb);
struct autofs_info *ino = autofs4_dentry_ino(dentry);
+ struct autofs_info *p_ino;
struct inode *inode;
char *cp;
dentry->d_fsdata = ino;
ino->dentry = dget(dentry);
+ atomic_inc(&ino->count);
+ p_ino = autofs4_dentry_ino(dentry->d_parent);
+ if (p_ino && dentry->d_parent != dentry)
+ atomic_inc(&p_ino->count);
ino->inode = inode;
dir->i_mtime = CURRENT_TIME;
{
struct autofs_sb_info *sbi = autofs4_sbi(dir->i_sb);
struct autofs_info *ino = autofs4_dentry_ino(dentry);
+ struct autofs_info *p_ino;
/* This allows root to remove symlinks */
if ( !autofs4_oz_mode(sbi) && !capable(CAP_SYS_ADMIN) )
return -EACCES;
+ if (atomic_dec_and_test(&ino->count)) {
+ p_ino = autofs4_dentry_ino(dentry->d_parent);
+ if (p_ino && dentry->d_parent != dentry)
+ atomic_dec(&p_ino->count);
+ }
dput(ino->dentry);
dentry->d_inode->i_size = 0;
{
struct autofs_sb_info *sbi = autofs4_sbi(dir->i_sb);
struct autofs_info *ino = autofs4_dentry_ino(dentry);
+ struct autofs_info *p_ino;
if (!autofs4_oz_mode(sbi))
return -EACCES;
spin_unlock(&dentry->d_lock);
spin_unlock(&dcache_lock);
+ if (atomic_dec_and_test(&ino->count)) {
+ p_ino = autofs4_dentry_ino(dentry->d_parent);
+ if (p_ino && dentry->d_parent != dentry)
+ atomic_dec(&p_ino->count);
+ }
dput(ino->dentry);
-
dentry->d_inode->i_size = 0;
dentry->d_inode->i_nlink = 0;
{
struct autofs_sb_info *sbi = autofs4_sbi(dir->i_sb);
struct autofs_info *ino = autofs4_dentry_ino(dentry);
+ struct autofs_info *p_ino;
struct inode *inode;
if ( !autofs4_oz_mode(sbi) )
dentry->d_fsdata = ino;
ino->dentry = dget(dentry);
+ atomic_inc(&ino->count);
+ p_ino = autofs4_dentry_ino(dentry->d_parent);
+ if (p_ino && dentry->d_parent != dentry)
+ atomic_inc(&p_ino->count);
ino->inode = inode;
dir->i_nlink++;
dir->i_mtime = CURRENT_TIME;
{
int status = 0;
- if (may_umount(mnt) == 0)
+ if (may_umount(mnt))
status = 1;
DPRINTK("returning %d", status);
* linux/fs/autofs/waitq.c
*
* Copyright 1997-1998 Transmeta Corporation -- All Rights Reserved
- * Copyright 2001-2003 Ian Kent <raven@themaw.net>
+ * Copyright 2001-2006 Ian Kent <raven@themaw.net>
*
* This file is part of the Linux kernel and is made available under
* the terms of the GNU General Public License, version 2, or at your
sbi->catatonic = 1;
wq = sbi->queues;
sbi->queues = NULL; /* Erase all wait queues */
- while ( wq ) {
+ while (wq) {
nwq = wq->next;
wq->status = -ENOENT; /* Magic is gone - report failure */
kfree(wq->name);
fput(sbi->pipe); /* Close the pipe */
sbi->pipe = NULL;
}
-
shrink_dcache_sb(sbi->sb);
}
pkt.hdr.proto_version = sbi->version;
pkt.hdr.type = type;
- if (type == autofs_ptype_missing) {
+ switch (type) {
+ /* Kernel protocol v4 missing and expire packets */
+ case autofs_ptype_missing:
+ {
struct autofs_packet_missing *mp = &pkt.missing;
pktsz = sizeof(*mp);
mp->len = wq->len;
memcpy(mp->name, wq->name, wq->len);
mp->name[wq->len] = '\0';
- } else if (type == autofs_ptype_expire_multi) {
+ break;
+ }
+ case autofs_ptype_expire_multi:
+ {
struct autofs_packet_expire_multi *ep = &pkt.expire_multi;
pktsz = sizeof(*ep);
ep->len = wq->len;
memcpy(ep->name, wq->name, wq->len);
ep->name[wq->len] = '\0';
- } else {
+ break;
+ }
+ /*
+ * Kernel protocol v5 packet for handling indirect and direct
+ * mount missing and expire requests
+ */
+ case autofs_ptype_missing_indirect:
+ case autofs_ptype_expire_indirect:
+ case autofs_ptype_missing_direct:
+ case autofs_ptype_expire_direct:
+ {
+ struct autofs_v5_packet *packet = &pkt.v5_packet;
+
+ pktsz = sizeof(*packet);
+
+ packet->wait_queue_token = wq->wait_queue_token;
+ packet->len = wq->len;
+ memcpy(packet->name, wq->name, wq->len);
+ packet->name[wq->len] = '\0';
+ packet->dev = wq->dev;
+ packet->ino = wq->ino;
+ packet->uid = wq->uid;
+ packet->gid = wq->gid;
+ packet->pid = wq->pid;
+ packet->tgid = wq->tgid;
+ break;
+ }
+ default:
printk("autofs4_notify_daemon: bad type %d!\n", type);
return;
}
{
struct autofs_wait_queue *wq;
char *name;
- int len, status;
+ unsigned int len = 0;
+ unsigned int hash = 0;
+ int status;
/* In catatonic mode, we don't wait for nobody */
- if ( sbi->catatonic )
+ if (sbi->catatonic)
return -ENOENT;
name = kmalloc(NAME_MAX + 1, GFP_KERNEL);
if (!name)
return -ENOMEM;
- len = autofs4_getpath(sbi, dentry, &name);
- if (!len) {
- kfree(name);
- return -ENOENT;
+ /* If this is a direct mount request create a dummy name */
+ if (IS_ROOT(dentry) && (sbi->type & AUTOFS_TYPE_DIRECT))
+ len = sprintf(name, "%p", dentry);
+ else {
+ len = autofs4_getpath(sbi, dentry, &name);
+ if (!len) {
+ kfree(name);
+ return -ENOENT;
+ }
}
+ hash = full_name_hash(name, len);
if (mutex_lock_interruptible(&sbi->wq_mutex)) {
kfree(name);
break;
}
- if ( !wq ) {
+ if (!wq) {
/* Can't wait for an expire if there's no mount */
if (notify == NFY_NONE && !d_mountpoint(dentry)) {
kfree(name);
/* Create a new wait queue */
wq = kmalloc(sizeof(struct autofs_wait_queue),GFP_KERNEL);
- if ( !wq ) {
+ if (!wq) {
kfree(name);
mutex_unlock(&sbi->wq_mutex);
return -ENOMEM;
wq->next = sbi->queues;
sbi->queues = wq;
init_waitqueue_head(&wq->queue);
- wq->hash = dentry->d_name.hash;
+ wq->hash = hash;
wq->name = name;
wq->len = len;
+ wq->dev = autofs4_get_dev(sbi);
+ wq->ino = autofs4_get_ino(sbi);
+ wq->uid = current->uid;
+ wq->gid = current->gid;
+ wq->pid = current->pid;
+ wq->tgid = current->tgid;
wq->status = -EINTR; /* Status return if interrupted */
atomic_set(&wq->wait_ctr, 2);
- atomic_set(&wq->notified, 1);
+ atomic_set(&wq->notify, 1);
mutex_unlock(&sbi->wq_mutex);
} else {
atomic_inc(&wq->wait_ctr);
(unsigned long) wq->wait_queue_token, wq->len, wq->name, notify);
}
- if (notify != NFY_NONE && atomic_dec_and_test(&wq->notified)) {
- int type = (notify == NFY_MOUNT ?
- autofs_ptype_missing : autofs_ptype_expire_multi);
+ if (notify != NFY_NONE && atomic_read(&wq->notify)) {
+ int type;
+
+ atomic_dec(&wq->notify);
+
+ if (sbi->version < 5) {
+ if (notify == NFY_MOUNT)
+ type = autofs_ptype_missing;
+ else
+ type = autofs_ptype_expire_multi;
+ } else {
+ if (notify == NFY_MOUNT)
+ type = (sbi->type & AUTOFS_TYPE_DIRECT) ?
+ autofs_ptype_missing_direct :
+ autofs_ptype_missing_indirect;
+ else
+ type = (sbi->type & AUTOFS_TYPE_DIRECT) ?
+ autofs_ptype_expire_direct :
+ autofs_ptype_expire_indirect;
+ }
DPRINTK("new wait id = 0x%08lx, name = %.*s, nfy=%d\n",
(unsigned long) wq->wait_queue_token, wq->len, wq->name, notify);
/* wq->name is NULL if and only if the lock is already released */
- if ( sbi->catatonic ) {
+ if (sbi->catatonic) {
/* We might have slept, so check again for catatonic mode */
wq->status = -ENOENT;
kfree(wq->name);
wq->name = NULL;
}
- if ( wq->name ) {
+ if (wq->name) {
/* Block all but "shutdown" signals while waiting */
sigset_t oldset;
unsigned long irqflags;
struct autofs_wait_queue *wq, **wql;
mutex_lock(&sbi->wq_mutex);
- for ( wql = &sbi->queues ; (wq = *wql) != 0 ; wql = &wq->next ) {
- if ( wq->wait_queue_token == wait_queue_token )
+ for (wql = &sbi->queues ; (wq = *wql) != 0 ; wql = &wq->next) {
+ if (wq->wait_queue_token == wait_queue_token)
break;
}
- if ( !wq ) {
+ if (!wq) {
mutex_unlock(&sbi->wq_mutex);
return -EINVAL;
}
#define EIO_ERROR ((void *) (return_EIO))
-static struct file_operations bad_file_ops =
+static const struct file_operations bad_file_ops =
{
.llseek = EIO_ERROR,
.aio_read = EIO_ERROR,
/* slab cache for befs_inode_info objects */
static kmem_cache_t *befs_inode_cachep;
-static struct file_operations befs_dir_operations = {
+static const struct file_operations befs_dir_operations = {
.read = generic_read_dir,
.readdir = befs_readdir,
};
/* file.c */
extern struct inode_operations bfs_file_inops;
-extern struct file_operations bfs_file_operations;
+extern const struct file_operations bfs_file_operations;
extern struct address_space_operations bfs_aops;
/* dir.c */
extern struct inode_operations bfs_dir_inops;
-extern struct file_operations bfs_dir_operations;
+extern const struct file_operations bfs_dir_operations;
#endif /* _FS_BFS_BFS_H */
return 0;
}
-struct file_operations bfs_dir_operations = {
+const struct file_operations bfs_dir_operations = {
.read = generic_read_dir,
.readdir = bfs_readdir,
.fsync = file_fsync,
#define dprintf(x...)
#endif
-struct file_operations bfs_file_operations = {
+const struct file_operations bfs_file_operations = {
.llseek = generic_file_llseek,
.read = generic_file_read,
.write = generic_file_write,
return count;
}
-static struct file_operations bm_entry_operations = {
+static const struct file_operations bm_entry_operations = {
.read = bm_entry_read,
.write = bm_entry_write,
};
return count;
}
-static struct file_operations bm_register_operations = {
+static const struct file_operations bm_register_operations = {
.write = bm_register_write,
};
return count;
}
-static struct file_operations bm_status_operations = {
+static const struct file_operations bm_status_operations = {
.read = bm_status_read,
.write = bm_status_write,
};
mutex_init(&bdev->bd_mount_mutex);
INIT_LIST_HEAD(&bdev->bd_inodes);
INIT_LIST_HEAD(&bdev->bd_list);
+#ifdef CONFIG_SYSFS
+ INIT_LIST_HEAD(&bdev->bd_holder_list);
+#endif
inode_init_once(&ei->vfs_inode);
}
}
EXPORT_SYMBOL(bd_release);
+#ifdef CONFIG_SYSFS
+/*
+ * Functions for bd_claim_by_kobject / bd_release_from_kobject
+ *
+ * If a kobject is passed to bd_claim_by_kobject()
+ * and the kobject has a parent directory,
+ * following symlinks are created:
+ * o from the kobject to the claimed bdev
+ * o from "holders" directory of the bdev to the parent of the kobject
+ * bd_release_from_kobject() removes these symlinks.
+ *
+ * Example:
+ * If /dev/dm-0 maps to /dev/sda, kobject corresponding to
+ * /sys/block/dm-0/slaves is passed to bd_claim_by_kobject(), then:
+ * /sys/block/dm-0/slaves/sda --> /sys/block/sda
+ * /sys/block/sda/holders/dm-0 --> /sys/block/dm-0
+ */
+
+static struct kobject *bdev_get_kobj(struct block_device *bdev)
+{
+ if (bdev->bd_contains != bdev)
+ return kobject_get(&bdev->bd_part->kobj);
+ else
+ return kobject_get(&bdev->bd_disk->kobj);
+}
+
+static struct kobject *bdev_get_holder(struct block_device *bdev)
+{
+ if (bdev->bd_contains != bdev)
+ return kobject_get(bdev->bd_part->holder_dir);
+ else
+ return kobject_get(bdev->bd_disk->holder_dir);
+}
+
+static void add_symlink(struct kobject *from, struct kobject *to)
+{
+ if (!from || !to)
+ return;
+ sysfs_create_link(from, to, kobject_name(to));
+}
+
+static void del_symlink(struct kobject *from, struct kobject *to)
+{
+ if (!from || !to)
+ return;
+ sysfs_remove_link(from, kobject_name(to));
+}
+
+/*
+ * 'struct bd_holder' contains pointers to kobjects symlinked by
+ * bd_claim_by_kobject.
+ * It's connected to bd_holder_list which is protected by bdev->bd_sem.
+ */
+struct bd_holder {
+ struct list_head list; /* chain of holders of the bdev */
+ int count; /* references from the holder */
+ struct kobject *sdir; /* holder object, e.g. "/block/dm-0/slaves" */
+ struct kobject *hdev; /* e.g. "/block/dm-0" */
+ struct kobject *hdir; /* e.g. "/block/sda/holders" */
+ struct kobject *sdev; /* e.g. "/block/sda" */
+};
+
+/*
+ * Get references of related kobjects at once.
+ * Returns 1 on success. 0 on failure.
+ *
+ * Should call bd_holder_release_dirs() after successful use.
+ */
+static int bd_holder_grab_dirs(struct block_device *bdev,
+ struct bd_holder *bo)
+{
+ if (!bdev || !bo)
+ return 0;
+
+ bo->sdir = kobject_get(bo->sdir);
+ if (!bo->sdir)
+ return 0;
+
+ bo->hdev = kobject_get(bo->sdir->parent);
+ if (!bo->hdev)
+ goto fail_put_sdir;
+
+ bo->sdev = bdev_get_kobj(bdev);
+ if (!bo->sdev)
+ goto fail_put_hdev;
+
+ bo->hdir = bdev_get_holder(bdev);
+ if (!bo->hdir)
+ goto fail_put_sdev;
+
+ return 1;
+
+fail_put_sdev:
+ kobject_put(bo->sdev);
+fail_put_hdev:
+ kobject_put(bo->hdev);
+fail_put_sdir:
+ kobject_put(bo->sdir);
+
+ return 0;
+}
+
+/* Put references of related kobjects at once. */
+static void bd_holder_release_dirs(struct bd_holder *bo)
+{
+ kobject_put(bo->hdir);
+ kobject_put(bo->sdev);
+ kobject_put(bo->hdev);
+ kobject_put(bo->sdir);
+}
+
+static struct bd_holder *alloc_bd_holder(struct kobject *kobj)
+{
+ struct bd_holder *bo;
+
+ bo = kzalloc(sizeof(*bo), GFP_KERNEL);
+ if (!bo)
+ return NULL;
+
+ bo->count = 1;
+ bo->sdir = kobj;
+
+ return bo;
+}
+
+static void free_bd_holder(struct bd_holder *bo)
+{
+ kfree(bo);
+}
+
+/**
+ * add_bd_holder - create sysfs symlinks for bd_claim() relationship
+ *
+ * @bdev: block device to be bd_claimed
+ * @bo: preallocated and initialized by alloc_bd_holder()
+ *
+ * If there is no matching entry with @bo in @bdev->bd_holder_list,
+ * add @bo to the list, create symlinks.
+ *
+ * Returns 1 if @bo was added to the list.
+ * Returns 0 if @bo wasn't used by any reason and should be freed.
+ */
+static int add_bd_holder(struct block_device *bdev, struct bd_holder *bo)
+{
+ struct bd_holder *tmp;
+
+ if (!bo)
+ return 0;
+
+ list_for_each_entry(tmp, &bdev->bd_holder_list, list) {
+ if (tmp->sdir == bo->sdir) {
+ tmp->count++;
+ return 0;
+ }
+ }
+
+ if (!bd_holder_grab_dirs(bdev, bo))
+ return 0;
+
+ add_symlink(bo->sdir, bo->sdev);
+ add_symlink(bo->hdir, bo->hdev);
+ list_add_tail(&bo->list, &bdev->bd_holder_list);
+ return 1;
+}
+
+/**
+ * del_bd_holder - delete sysfs symlinks for bd_claim() relationship
+ *
+ * @bdev: block device to be bd_claimed
+ * @kobj: holder's kobject
+ *
+ * If there is matching entry with @kobj in @bdev->bd_holder_list
+ * and no other bd_claim() from the same kobject,
+ * remove the struct bd_holder from the list, delete symlinks for it.
+ *
+ * Returns a pointer to the struct bd_holder when it's removed from the list
+ * and ready to be freed.
+ * Returns NULL if matching claim isn't found or there is other bd_claim()
+ * by the same kobject.
+ */
+static struct bd_holder *del_bd_holder(struct block_device *bdev,
+ struct kobject *kobj)
+{
+ struct bd_holder *bo;
+
+ list_for_each_entry(bo, &bdev->bd_holder_list, list) {
+ if (bo->sdir == kobj) {
+ bo->count--;
+ BUG_ON(bo->count < 0);
+ if (!bo->count) {
+ list_del(&bo->list);
+ del_symlink(bo->sdir, bo->sdev);
+ del_symlink(bo->hdir, bo->hdev);
+ bd_holder_release_dirs(bo);
+ return bo;
+ }
+ break;
+ }
+ }
+
+ return NULL;
+}
+
+/**
+ * bd_claim_by_kobject - bd_claim() with additional kobject signature
+ *
+ * @bdev: block device to be claimed
+ * @holder: holder's signature
+ * @kobj: holder's kobject
+ *
+ * Do bd_claim() and if it succeeds, create sysfs symlinks between
+ * the bdev and the holder's kobject.
+ * Use bd_release_from_kobject() when relesing the claimed bdev.
+ *
+ * Returns 0 on success. (same as bd_claim())
+ * Returns errno on failure.
+ */
+static int bd_claim_by_kobject(struct block_device *bdev, void *holder,
+ struct kobject *kobj)
+{
+ int res;
+ struct bd_holder *bo;
+
+ if (!kobj)
+ return -EINVAL;
+
+ bo = alloc_bd_holder(kobj);
+ if (!bo)
+ return -ENOMEM;
+
+ mutex_lock(&bdev->bd_mutex);
+ res = bd_claim(bdev, holder);
+ if (res || !add_bd_holder(bdev, bo))
+ free_bd_holder(bo);
+ mutex_unlock(&bdev->bd_mutex);
+
+ return res;
+}
+
+/**
+ * bd_release_from_kobject - bd_release() with additional kobject signature
+ *
+ * @bdev: block device to be released
+ * @kobj: holder's kobject
+ *
+ * Do bd_release() and remove sysfs symlinks created by bd_claim_by_kobject().
+ */
+static void bd_release_from_kobject(struct block_device *bdev,
+ struct kobject *kobj)
+{
+ struct bd_holder *bo;
+
+ if (!kobj)
+ return;
+
+ mutex_lock(&bdev->bd_mutex);
+ bd_release(bdev);
+ if ((bo = del_bd_holder(bdev, kobj)))
+ free_bd_holder(bo);
+ mutex_unlock(&bdev->bd_mutex);
+}
+
+/**
+ * bd_claim_by_disk - wrapper function for bd_claim_by_kobject()
+ *
+ * @bdev: block device to be claimed
+ * @holder: holder's signature
+ * @disk: holder's gendisk
+ *
+ * Call bd_claim_by_kobject() with getting @disk->slave_dir.
+ */
+int bd_claim_by_disk(struct block_device *bdev, void *holder,
+ struct gendisk *disk)
+{
+ return bd_claim_by_kobject(bdev, holder, kobject_get(disk->slave_dir));
+}
+EXPORT_SYMBOL_GPL(bd_claim_by_disk);
+
+/**
+ * bd_release_from_disk - wrapper function for bd_release_from_kobject()
+ *
+ * @bdev: block device to be claimed
+ * @disk: holder's gendisk
+ *
+ * Call bd_release_from_kobject() and put @disk->slave_dir.
+ */
+void bd_release_from_disk(struct block_device *bdev, struct gendisk *disk)
+{
+ bd_release_from_kobject(bdev, disk->slave_dir);
+ kobject_put(disk->slave_dir);
+}
+EXPORT_SYMBOL_GPL(bd_release_from_disk);
+#endif
+
/*
* Tries to open block device by device number. Use it ONLY if you
* really do not have anything better - i.e. when you are behind a
.direct_IO = blkdev_direct_IO,
};
-struct file_operations def_blk_fops = {
+const struct file_operations def_blk_fops = {
.open = blkdev_open,
.release = blkdev_close,
.llseek = block_llseek,
wakeup_pdflush(1024);
yield();
- for_each_pgdat(pgdat) {
+ for_each_online_pgdat(pgdat) {
zones = pgdat->node_zonelists[gfp_zone(GFP_NOFS)].zones;
if (*zones)
try_to_free_pages(zones, GFP_NOFS);
}
int register_chrdev(unsigned int major, const char *name,
- struct file_operations *fops)
+ const struct file_operations *fops)
{
struct char_device_struct *cd;
struct cdev *cdev;
* is contain the open that then fills in the correct operations
* depending on the special file...
*/
-struct file_operations def_chr_fops = {
+const struct file_operations def_chr_fops = {
.open = chrdev_open,
};
return p;
}
-void cdev_init(struct cdev *cdev, struct file_operations *fops)
+void cdev_init(struct cdev *cdev, const struct file_operations *fops)
{
memset(cdev, 0, sizeof *cdev);
INIT_LIST_HEAD(&cdev->list);
#endif
};
-struct file_operations cifs_file_ops = {
+const struct file_operations cifs_file_ops = {
.read = do_sync_read,
.write = do_sync_write,
.readv = generic_file_readv,
#endif /* CONFIG_CIFS_EXPERIMENTAL */
};
-struct file_operations cifs_file_direct_ops = {
+const struct file_operations cifs_file_direct_ops = {
/* no mmap, no aio, no readv -
BB reevaluate whether they can be done with directio, no cache */
.read = cifs_user_read,
.dir_notify = cifs_dir_notify,
#endif /* CONFIG_CIFS_EXPERIMENTAL */
};
-struct file_operations cifs_file_nobrl_ops = {
+const struct file_operations cifs_file_nobrl_ops = {
.read = do_sync_read,
.write = do_sync_write,
.readv = generic_file_readv,
#endif /* CONFIG_CIFS_EXPERIMENTAL */
};
-struct file_operations cifs_file_direct_nobrl_ops = {
+const struct file_operations cifs_file_direct_nobrl_ops = {
/* no mmap, no aio, no readv -
BB reevaluate whether they can be done with directio, no cache */
.read = cifs_user_read,
#endif /* CONFIG_CIFS_EXPERIMENTAL */
};
-struct file_operations cifs_dir_ops = {
+const struct file_operations cifs_dir_ops = {
.readdir = cifs_readdir,
.release = cifs_closedir,
.read = generic_read_dir,
extern struct inode_operations cifs_symlink_inode_ops;
/* Functions related to files and directories */
-extern struct file_operations cifs_file_ops;
-extern struct file_operations cifs_file_direct_ops; /* if directio mount */
-extern struct file_operations cifs_file_nobrl_ops;
-extern struct file_operations cifs_file_direct_nobrl_ops; /* if directio mount */
+extern const struct file_operations cifs_file_ops;
+extern const struct file_operations cifs_file_direct_ops; /* if directio mount */
+extern const struct file_operations cifs_file_nobrl_ops;
+extern const struct file_operations cifs_file_direct_nobrl_ops; /* if directio mount */
extern int cifs_open(struct inode *inode, struct file *file);
extern int cifs_close(struct inode *inode, struct file *file);
extern int cifs_closedir(struct inode *inode, struct file *file);
extern int cifs_fsync(struct file *, struct dentry *, int);
extern int cifs_flush(struct file *);
extern int cifs_file_mmap(struct file * , struct vm_area_struct *);
-extern struct file_operations cifs_dir_ops;
+extern const struct file_operations cifs_dir_ops;
extern int cifs_dir_open(struct inode *inode, struct file *file);
extern int cifs_readdir(struct file *file, void *direntry, filldir_t filldir);
extern int cifs_dir_notify(struct file *, unsigned long arg);
.setattr = coda_setattr,
};
-struct file_operations coda_dir_operations = {
+const struct file_operations coda_dir_operations = {
.llseek = generic_file_llseek,
.read = generic_read_dir,
.readdir = coda_readdir,
return err;
}
-struct file_operations coda_file_operations = {
+const struct file_operations coda_file_operations = {
.llseek = generic_file_llseek,
.read = coda_file_read,
.write = coda_file_write,
.setattr = coda_setattr,
};
-struct file_operations coda_ioctl_operations = {
+const struct file_operations coda_ioctl_operations = {
.owner = THIS_MODULE,
.ioctl = coda_pioctl,
};
}
-static struct file_operations coda_psdev_fops = {
+static const struct file_operations coda_psdev_fops = {
.owner = THIS_MODULE,
.read = coda_psdev_read,
.write = coda_psdev_write,
* This is a virtual copy of sys_select from fs/select.c and probably
* should be compared to it from time to time
*/
-static void *select_bits_alloc(int size)
-{
- return kmalloc(6 * size, GFP_KERNEL);
-}
-
-static void select_bits_free(void *bits, int size)
-{
- kfree(bits);
-}
/*
* We can actually return ERESTARTSYS instead of EINTR, but I'd
*/
ret = -ENOMEM;
size = FDS_BYTES(n);
- bits = select_bits_alloc(size);
+ bits = kmalloc(6 * size, GFP_KERNEL);
if (!bits)
goto out_nofds;
fds.in = (unsigned long *) bits;
compat_set_fd_set(n, exp, fds.res_ex);
out:
- select_bits_free(bits, size);
+ kfree(bits);
out_nofds:
return ret;
}
extern struct rw_semaphore configfs_rename_sem;
extern struct super_block * configfs_sb;
-extern struct file_operations configfs_dir_operations;
-extern struct file_operations configfs_file_operations;
-extern struct file_operations bin_fops;
+extern const struct file_operations configfs_dir_operations;
+extern const struct file_operations configfs_file_operations;
+extern const struct file_operations bin_fops;
extern struct inode_operations configfs_dir_inode_operations;
extern struct inode_operations configfs_symlink_inode_operations;
return offset;
}
-struct file_operations configfs_dir_operations = {
+const struct file_operations configfs_dir_operations = {
.open = configfs_dir_open,
.release = configfs_dir_close,
.llseek = configfs_dir_lseek,
return 0;
}
-struct file_operations configfs_file_operations = {
+const struct file_operations configfs_file_operations = {
.read = configfs_read_file,
.write = configfs_write_file,
.llseek = generic_file_llseek,
static struct super_operations cramfs_ops;
static struct inode_operations cramfs_dir_inode_operations;
-static struct file_operations cramfs_directory_operations;
+static const struct file_operations cramfs_directory_operations;
static struct address_space_operations cramfs_aops;
static DEFINE_MUTEX(read_mutex);
/*
* A directory can only readdir
*/
-static struct file_operations cramfs_directory_operations = {
+static const struct file_operations cramfs_directory_operations = {
.llseek = generic_file_llseek,
.read = generic_read_dir,
.readdir = cramfs_readdir,
return 0;
}
-struct file_operations debugfs_file_operations = {
+const struct file_operations debugfs_file_operations = {
.read = default_read_file,
.write = default_write_file,
.open = default_open,
return count;
}
-static struct file_operations fops_bool = {
+static const struct file_operations fops_bool = {
.read = read_file_bool,
.write = write_file_bool,
.open = default_open,
*/
struct dentry *debugfs_create_file(const char *name, mode_t mode,
struct dentry *parent, void *data,
- struct file_operations *fops)
+ const struct file_operations *fops)
{
struct dentry *dentry = NULL;
int error;
#ifdef CONFIG_DEVFS_DEBUG
static ssize_t stat_read(struct file *file, char __user *buf, size_t len,
loff_t * ppos);
-static struct file_operations stat_fops = {
+static const struct file_operations stat_fops = {
.open = nonseekable_open,
.read = stat_read,
};
#endif
/* Devfs daemon file operations */
-static struct file_operations devfsd_fops = {
+static const struct file_operations devfsd_fops = {
.open = nonseekable_open,
.read = devfsd_read,
.ioctl = devfsd_ioctl,
static struct inode_operations devfs_iops;
static struct inode_operations devfs_dir_iops;
-static struct file_operations devfs_fops;
-static struct file_operations devfs_dir_fops;
+static const struct file_operations devfs_fops;
+static const struct file_operations devfs_dir_fops;
static struct inode_operations devfs_symlink_iops;
static int devfs_notify_change(struct dentry *dentry, struct iattr *iattr)
return err;
} /* End Function devfs_open */
-static struct file_operations devfs_fops = {
+static const struct file_operations devfs_fops = {
.open = devfs_open,
};
-static struct file_operations devfs_dir_fops = {
+static const struct file_operations devfs_dir_fops = {
.read = generic_read_dir,
.readdir = devfs_readdir,
};
static int efs_readdir(struct file *, void *, filldir_t);
-struct file_operations efs_dir_operations = {
+const struct file_operations efs_dir_operations = {
.read = generic_read_dir,
.readdir = efs_readdir,
};
static struct vfsmount *eventpoll_mnt __read_mostly;
/* File callbacks that implement the eventpoll file behaviour */
-static struct file_operations eventpoll_fops = {
+static const struct file_operations eventpoll_fops = {
.release = ep_eventpoll_close,
.poll = ep_eventpoll_poll
};
return 0;
}
-struct file_operations ext2_dir_operations = {
+const struct file_operations ext2_dir_operations = {
.llseek = generic_file_llseek,
.read = generic_read_dir,
.readdir = ext2_readdir,
*/
/* dir.c */
-extern struct file_operations ext2_dir_operations;
+extern const struct file_operations ext2_dir_operations;
/* file.c */
extern struct inode_operations ext2_file_inode_operations;
-extern struct file_operations ext2_file_operations;
-extern struct file_operations ext2_xip_file_operations;
+extern const struct file_operations ext2_file_operations;
+extern const struct file_operations ext2_xip_file_operations;
/* inode.c */
extern struct address_space_operations ext2_aops;
* We have mostly NULL's here: the current defaults are ok for
* the ext2 filesystem.
*/
-struct file_operations ext2_file_operations = {
+const struct file_operations ext2_file_operations = {
.llseek = generic_file_llseek,
.read = generic_file_read,
.write = generic_file_write,
};
#ifdef CONFIG_EXT2_FS_XIP
-struct file_operations ext2_xip_file_operations = {
+const struct file_operations ext2_xip_file_operations = {
.llseek = generic_file_llseek,
.read = xip_file_read,
.write = xip_file_write,
static int ext3_release_dir (struct inode * inode,
struct file * filp);
-struct file_operations ext3_dir_operations = {
+const struct file_operations ext3_dir_operations = {
.llseek = generic_file_llseek,
.read = generic_read_dir,
.readdir = ext3_readdir, /* we take BKL. needed?*/
return ret;
}
-struct file_operations ext3_file_operations = {
+const struct file_operations ext3_file_operations = {
.llseek = generic_file_llseek,
.read = do_sync_read,
.write = do_sync_write,
return ret;
}
-struct file_operations fat_dir_operations = {
+const struct file_operations fat_dir_operations = {
.read = generic_read_dir,
.readdir = fat_readdir,
.ioctl = fat_dir_ioctl,
}
}
-struct file_operations fat_file_operations = {
+const struct file_operations fat_file_operations = {
.llseek = generic_file_llseek,
.read = do_sync_read,
.write = do_sync_write,
EXPORT_SYMBOL_GPL(fat_fill_super);
-int __init fat_cache_init(void);
-void fat_cache_destroy(void);
-
static int __init init_fat_fs(void)
{
int err;
* is contain the open that then fills in the correct operations
* depending on the access mode of the file...
*/
-struct file_operations def_fifo_fops = {
+const struct file_operations def_fifo_fops = {
.open = fifo_open, /* will set read or write pipe_fops */
};
void __init files_defer_init(void)
{
int i;
- for_each_cpu(i)
+ for_each_possible_cpu(i)
fdtable_defer_list_init(i);
}
/* vxfs_lookup.c */
extern struct inode_operations vxfs_dir_inode_ops;
-extern struct file_operations vxfs_dir_operations;
+extern const struct file_operations vxfs_dir_operations;
/* vxfs_olt.c */
extern int vxfs_read_olt(struct super_block *, u_long);
.lookup = vxfs_lookup,
};
-struct file_operations vxfs_dir_operations = {
+const struct file_operations vxfs_dir_operations = {
.readdir = vxfs_readdir,
};
return 0;
}
-struct file_operations fuse_dev_operations = {
+const struct file_operations fuse_dev_operations = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.read = fuse_dev_read,
.removexattr = fuse_removexattr,
};
-static struct file_operations fuse_dir_operations = {
+static const struct file_operations fuse_dir_operations = {
.llseek = generic_file_llseek,
.read = generic_read_dir,
.readdir = fuse_readdir,
#include <linux/slab.h>
#include <linux/kernel.h>
-static struct file_operations fuse_direct_io_file_operations;
+static const struct file_operations fuse_direct_io_file_operations;
static int fuse_send_open(struct inode *inode, struct file *file, int isdir,
struct fuse_open_out *outargp)
return 0;
}
-static struct file_operations fuse_file_operations = {
+static const struct file_operations fuse_file_operations = {
.llseek = generic_file_llseek,
.read = generic_file_read,
.write = generic_file_write,
.sendfile = generic_file_sendfile,
};
-static struct file_operations fuse_direct_io_file_operations = {
+static const struct file_operations fuse_direct_io_file_operations = {
.llseek = generic_file_llseek,
.read = fuse_direct_read,
.write = fuse_direct_write,
}
/** Device operations */
-extern struct file_operations fuse_dev_operations;
+extern const struct file_operations fuse_dev_operations;
/**
* This is the single global spinlock which protects FUSE's structures
return res;
}
-struct file_operations hfs_dir_operations = {
+const struct file_operations hfs_dir_operations = {
.read = generic_read_dir,
.readdir = hfs_readdir,
.llseek = generic_file_llseek,
extern void hfs_cat_build_key(struct super_block *, btree_key *, u32, struct qstr *);
/* dir.c */
-extern struct file_operations hfs_dir_operations;
+extern const struct file_operations hfs_dir_operations;
extern struct inode_operations hfs_dir_inode_operations;
/* extent.c */
#include "hfs_fs.h"
#include "btree.h"
-static struct file_operations hfs_file_operations;
+static const struct file_operations hfs_file_operations;
static struct inode_operations hfs_file_inode_operations;
/*================ Variable-like macros ================*/
}
-static struct file_operations hfs_file_operations = {
+static const struct file_operations hfs_file_operations = {
.llseek = generic_file_llseek,
.read = generic_file_read,
.write = generic_file_write,
.rename = hfsplus_rename,
};
-struct file_operations hfsplus_dir_operations = {
+const struct file_operations hfsplus_dir_operations = {
.read = generic_read_dir,
.readdir = hfsplus_readdir,
.ioctl = hfsplus_ioctl,
.listxattr = hfsplus_listxattr,
};
-static struct file_operations hfsplus_file_operations = {
+static const struct file_operations hfsplus_file_operations = {
.llseek = generic_file_llseek,
.read = generic_file_read,
.write = generic_file_write,
return fsync_file(HOSTFS_I(dentry->d_inode)->fd, datasync);
}
-static struct file_operations hostfs_file_fops = {
+static const struct file_operations hostfs_file_fops = {
.llseek = generic_file_llseek,
.read = generic_file_read,
.sendfile = generic_file_sendfile,
.fsync = hostfs_fsync,
};
-static struct file_operations hostfs_dir_fops = {
+static const struct file_operations hostfs_dir_fops = {
.llseek = generic_file_llseek,
.readdir = hostfs_readdir,
.read = generic_read_dir,
spare_out[2] = buf.f_spare[2];
spare_out[3] = buf.f_spare[3];
spare_out[4] = buf.f_spare[4];
- spare_out[5] = buf.f_spare[5];
return(0);
}
return ERR_PTR(-ENOENT);
}
-struct file_operations hpfs_dir_ops =
+const struct file_operations hpfs_dir_ops =
{
.llseek = hpfs_dir_lseek,
.read = generic_read_dir,
return retval;
}
-struct file_operations hpfs_file_ops =
+const struct file_operations hpfs_file_ops =
{
.llseek = generic_file_llseek,
.read = generic_file_read,
/* dir.c */
struct dentry *hpfs_lookup(struct inode *, struct dentry *, struct nameidata *);
-extern struct file_operations hpfs_dir_ops;
+extern const struct file_operations hpfs_dir_ops;
/* dnode.c */
/* file.c */
int hpfs_file_fsync(struct file *, struct dentry *, int);
-extern struct file_operations hpfs_file_ops;
+extern const struct file_operations hpfs_file_ops;
extern struct inode_operations hpfs_file_iops;
extern struct address_space_operations hpfs_aops;
return(default_llseek(file, off, where));
}
-static struct file_operations hppfs_file_fops = {
+static const struct file_operations hppfs_file_fops = {
.owner = NULL,
.llseek = hppfs_llseek,
.read = hppfs_read,
return(0);
}
-static struct file_operations hppfs_dir_fops = {
+static const struct file_operations hppfs_dir_fops = {
.owner = NULL,
.readdir = hppfs_readdir,
.open = hppfs_dir_open,
static struct super_operations hugetlbfs_ops;
static struct address_space_operations hugetlbfs_aops;
-struct file_operations hugetlbfs_file_operations;
+const struct file_operations hugetlbfs_file_operations;
static struct inode_operations hugetlbfs_dir_inode_operations;
static struct inode_operations hugetlbfs_inode_operations;
inode_init_once(&ei->vfs_inode);
}
-struct file_operations hugetlbfs_file_operations = {
+const struct file_operations hugetlbfs_file_operations = {
.mmap = hugetlbfs_file_mmap,
.fsync = simple_sync_file,
.get_unmapped_area = hugetlb_get_unmapped_area,
{
static struct address_space_operations empty_aops;
static struct inode_operations empty_iops;
- static struct file_operations empty_fops;
+ static const struct file_operations empty_fops;
struct inode *inode;
if (sb->s_op->alloc_inode)
return ret;
}
-static struct file_operations inotify_fops = {
+static const struct file_operations inotify_fops = {
.poll = inotify_poll,
.read = inotify_read,
.release = inotify_release,
static int isofs_readdir(struct file *, void *, filldir_t);
-struct file_operations isofs_dir_operations =
+const struct file_operations isofs_dir_operations =
{
.read = generic_read_dir,
.readdir = isofs_readdir,
}
extern struct inode_operations isofs_dir_inode_operations;
-extern struct file_operations isofs_dir_operations;
+extern const struct file_operations isofs_dir_operations;
extern struct address_space_operations isofs_symlink_aops;
extern struct export_operations isofs_export_ops;
static int jffs_remove(struct inode *dir, struct dentry *dentry, int type);
static struct super_operations jffs_ops;
-static struct file_operations jffs_file_operations;
+static const struct file_operations jffs_file_operations;
static struct inode_operations jffs_file_inode_operations;
-static struct file_operations jffs_dir_operations;
+static const struct file_operations jffs_dir_operations;
static struct inode_operations jffs_dir_inode_operations;
static struct address_space_operations jffs_address_operations;
}
-static struct file_operations jffs_file_operations =
+static const struct file_operations jffs_file_operations =
{
.open = generic_file_open,
.llseek = generic_file_llseek,
};
-static struct file_operations jffs_dir_operations =
+static const struct file_operations jffs_dir_operations =
{
.readdir = jffs_readdir,
};
static int jffs2_rename (struct inode *, struct dentry *,
struct inode *, struct dentry *);
-struct file_operations jffs2_dir_operations =
+const struct file_operations jffs2_dir_operations =
{
.read = generic_read_dir,
.readdir = jffs2_readdir,
return 0;
}
-struct file_operations jffs2_file_operations =
+const struct file_operations jffs2_file_operations =
{
.llseek = generic_file_llseek,
.open = generic_file_open,
void jffs2_garbage_collect_trigger(struct jffs2_sb_info *c);
/* dir.c */
-extern struct file_operations jffs2_dir_operations;
+extern const struct file_operations jffs2_dir_operations;
extern struct inode_operations jffs2_dir_inode_operations;
/* file.c */
-extern struct file_operations jffs2_file_operations;
+extern const struct file_operations jffs2_file_operations;
extern struct inode_operations jffs2_file_inode_operations;
extern struct address_space_operations jffs2_file_address_operations;
int jffs2_fsync(struct file *, struct dentry *, int);
#endif
};
-struct file_operations jfs_file_operations = {
+const struct file_operations jfs_file_operations = {
.open = jfs_open,
.llseek = generic_file_llseek,
.write = generic_file_write,
extern struct address_space_operations jfs_aops;
extern struct inode_operations jfs_dir_inode_operations;
-extern struct file_operations jfs_dir_operations;
+extern const struct file_operations jfs_dir_operations;
extern struct inode_operations jfs_file_inode_operations;
-extern struct file_operations jfs_file_operations;
+extern const struct file_operations jfs_file_operations;
extern struct inode_operations jfs_symlink_inode_operations;
extern struct dentry_operations jfs_ci_dentry_operations;
#endif /* _H_JFS_INODE */
#endif
};
-struct file_operations jfs_dir_operations = {
+const struct file_operations jfs_dir_operations = {
.read = generic_read_dir,
.readdir = jfs_readdir,
.fsync = jfs_fsync,
return -EISDIR;
}
-struct file_operations simple_dir_operations = {
+const struct file_operations simple_dir_operations = {
.open = dcache_dir_open,
.release = dcache_dir_close,
.llseek = dcache_dir_lseek,
/*
* mb_cache_shrink()
*
- * Removes all cache entires of a device from the cache. All cache entries
+ * Removes all cache entries of a device from the cache. All cache entries
* currently in use cannot be freed, and thus remain in the cache. All others
* are freed.
*
static int minix_readdir(struct file *, void *, filldir_t);
-struct file_operations minix_dir_operations = {
+const struct file_operations minix_dir_operations = {
.read = generic_read_dir,
.readdir = minix_readdir,
.fsync = minix_sync_file,
*/
int minix_sync_file(struct file *, struct dentry *, int);
-struct file_operations minix_file_operations = {
+const struct file_operations minix_file_operations = {
.llseek = generic_file_llseek,
.read = generic_file_read,
.write = generic_file_write,
extern struct inode_operations minix_file_inode_operations;
extern struct inode_operations minix_dir_inode_operations;
-extern struct file_operations minix_file_operations;
-extern struct file_operations minix_dir_operations;
+extern const struct file_operations minix_file_operations;
+extern const struct file_operations minix_dir_operations;
extern struct dentry_operations minix_dentry_operations;
static inline struct minix_sb_info *minix_sb(struct super_block *sb)
struct dentry *dentry;
};
+static inline void dput_path(struct path *path, struct nameidata *nd)
+{
+ dput(path->dentry);
+ if (path->mnt != nd->mnt)
+ mntput(path->mnt);
+}
+
+static inline void path_to_nameidata(struct path *path, struct nameidata *nd)
+{
+ dput(nd->dentry);
+ if (nd->mnt != path->mnt)
+ mntput(nd->mnt);
+ nd->mnt = path->mnt;
+ nd->dentry = path->dentry;
+}
+
static __always_inline int __do_follow_link(struct path *path, struct nameidata *nd)
{
int error;
touch_atime(path->mnt, dentry);
nd_set_link(nd, NULL);
- if (path->mnt == nd->mnt)
- mntget(path->mnt);
+ if (path->mnt != nd->mnt) {
+ path_to_nameidata(path, nd);
+ dget(dentry);
+ }
+ mntget(path->mnt);
cookie = dentry->d_inode->i_op->follow_link(dentry, nd);
error = PTR_ERR(cookie);
if (!IS_ERR(cookie)) {
return error;
}
-static inline void dput_path(struct path *path, struct nameidata *nd)
-{
- dput(path->dentry);
- if (path->mnt != nd->mnt)
- mntput(path->mnt);
-}
-
-static inline void path_to_nameidata(struct path *path, struct nameidata *nd)
-{
- dput(nd->dentry);
- if (nd->mnt != path->mnt)
- mntput(nd->mnt);
- nd->mnt = path->mnt;
- nd->dentry = path->dentry;
-}
-
/*
* This limits recursive symlink follows to 8, while
* limiting consecutive symlinks to 40.
spin_unlock(&vfsmount_lock);
if (actual_refs > minimum_refs)
- return -EBUSY;
+ return 0;
- return 0;
+ return 1;
}
EXPORT_SYMBOL(may_umount_tree);
*/
int may_umount(struct vfsmount *mnt)
{
- int ret = 0;
+ int ret = 1;
spin_lock(&vfsmount_lock);
if (propagate_mount_busy(mnt, 2))
- ret = -EBUSY;
+ ret = 0;
spin_unlock(&vfsmount_lock);
return ret;
}
#define ncp_symlink NULL
#endif
-struct file_operations ncp_dir_operations =
+const struct file_operations ncp_dir_operations =
{
.read = generic_read_dir,
.readdir = ncp_readdir,
return 0;
}
-struct file_operations ncp_file_operations =
+const struct file_operations ncp_file_operations =
{
.llseek = remote_llseek,
.read = ncp_file_read,
static int nfs_fsync_dir(struct file *, struct dentry *, int);
static loff_t nfs_llseek_dir(struct file *, loff_t, int);
-struct file_operations nfs_dir_operations = {
+const struct file_operations nfs_dir_operations = {
.llseek = nfs_llseek_dir,
.read = generic_read_dir,
.readdir = nfs_readdir,
static int nfs_lock(struct file *filp, int cmd, struct file_lock *fl);
static int nfs_flock(struct file *filp, int cmd, struct file_lock *fl);
-struct file_operations nfs_file_operations = {
+const struct file_operations nfs_file_operations = {
.llseek = nfs_file_llseek,
.read = do_sync_read,
.write = do_sync_write,
#define EXPKEY_HASHMASK (EXPKEY_HASHMAX -1)
static struct cache_head *expkey_table[EXPKEY_HASHMAX];
-static inline int svc_expkey_hash(struct svc_expkey *item)
+static void expkey_put(struct kref *ref)
{
- int hash = item->ek_fsidtype;
- char * cp = (char*)item->ek_fsid;
- int len = key_len(item->ek_fsidtype);
+ struct svc_expkey *key = container_of(ref, struct svc_expkey, h.ref);
- hash ^= hash_mem(cp, len, EXPKEY_HASHBITS);
- hash ^= hash_ptr(item->ek_client, EXPKEY_HASHBITS);
- return hash & EXPKEY_HASHMASK;
-}
-
-void expkey_put(struct cache_head *item, struct cache_detail *cd)
-{
- if (cache_put(item, cd)) {
- struct svc_expkey *key = container_of(item, struct svc_expkey, h);
- if (test_bit(CACHE_VALID, &item->flags) &&
- !test_bit(CACHE_NEGATIVE, &item->flags))
- exp_put(key->ek_export);
- auth_domain_put(key->ek_client);
- kfree(key);
+ if (test_bit(CACHE_VALID, &key->h.flags) &&
+ !test_bit(CACHE_NEGATIVE, &key->h.flags)) {
+ dput(key->ek_dentry);
+ mntput(key->ek_mnt);
}
+ auth_domain_put(key->ek_client);
+ kfree(key);
}
static void expkey_request(struct cache_detail *cd,
(*bpp)[-1] = '\n';
}
-static struct svc_expkey *svc_expkey_lookup(struct svc_expkey *, int);
+static struct svc_expkey *svc_expkey_update(struct svc_expkey *new, struct svc_expkey *old);
+static struct svc_expkey *svc_expkey_lookup(struct svc_expkey *);
+static struct cache_detail svc_expkey_cache;
+
static int expkey_parse(struct cache_detail *cd, char *mesg, int mlen)
{
/* client fsidtype fsid [path] */
int fsidtype;
char *ep;
struct svc_expkey key;
+ struct svc_expkey *ek;
if (mesg[mlen-1] != '\n')
return -EINVAL;
key.ek_fsidtype = fsidtype;
memcpy(key.ek_fsid, buf, len);
+ ek = svc_expkey_lookup(&key);
+ err = -ENOMEM;
+ if (!ek)
+ goto out;
+
/* now we want a pathname, or empty meaning NEGATIVE */
+ err = -EINVAL;
if ((len=qword_get(&mesg, buf, PAGE_SIZE)) < 0)
goto out;
dprintk("Path seems to be <%s>\n", buf);
err = 0;
if (len == 0) {
- struct svc_expkey *ek;
set_bit(CACHE_NEGATIVE, &key.h.flags);
- ek = svc_expkey_lookup(&key, 1);
+ ek = svc_expkey_update(&key, ek);
if (ek)
- expkey_put(&ek->h, &svc_expkey_cache);
+ cache_put(&ek->h, &svc_expkey_cache);
+ else err = -ENOMEM;
} else {
struct nameidata nd;
- struct svc_expkey *ek;
- struct svc_export *exp;
err = path_lookup(buf, 0, &nd);
if (err)
goto out;
dprintk("Found the path %s\n", buf);
- exp = exp_get_by_name(dom, nd.mnt, nd.dentry, NULL);
-
- err = -ENOENT;
- if (!exp)
- goto out_nd;
- key.ek_export = exp;
- dprintk("And found export\n");
+ key.ek_mnt = nd.mnt;
+ key.ek_dentry = nd.dentry;
- ek = svc_expkey_lookup(&key, 1);
+ ek = svc_expkey_update(&key, ek);
if (ek)
- expkey_put(&ek->h, &svc_expkey_cache);
- exp_put(exp);
- err = 0;
- out_nd:
+ cache_put(&ek->h, &svc_expkey_cache);
+ else
+ err = -ENOMEM;
path_release(&nd);
}
cache_flush();
if (test_bit(CACHE_VALID, &h->flags) &&
!test_bit(CACHE_NEGATIVE, &h->flags)) {
seq_printf(m, " ");
- seq_path(m, ek->ek_export->ex_mnt, ek->ek_export->ex_dentry, "\\ \t\n");
+ seq_path(m, ek->ek_mnt, ek->ek_dentry, "\\ \t\n");
}
seq_printf(m, "\n");
return 0;
}
-
-struct cache_detail svc_expkey_cache = {
- .owner = THIS_MODULE,
- .hash_size = EXPKEY_HASHMAX,
- .hash_table = expkey_table,
- .name = "nfsd.fh",
- .cache_put = expkey_put,
- .cache_request = expkey_request,
- .cache_parse = expkey_parse,
- .cache_show = expkey_show,
-};
-static inline int svc_expkey_match (struct svc_expkey *a, struct svc_expkey *b)
+static inline int expkey_match (struct cache_head *a, struct cache_head *b)
{
- if (a->ek_fsidtype != b->ek_fsidtype ||
- a->ek_client != b->ek_client ||
- memcmp(a->ek_fsid, b->ek_fsid, key_len(a->ek_fsidtype)) != 0)
+ struct svc_expkey *orig = container_of(a, struct svc_expkey, h);
+ struct svc_expkey *new = container_of(b, struct svc_expkey, h);
+
+ if (orig->ek_fsidtype != new->ek_fsidtype ||
+ orig->ek_client != new->ek_client ||
+ memcmp(orig->ek_fsid, new->ek_fsid, key_len(orig->ek_fsidtype)) != 0)
return 0;
return 1;
}
-static inline void svc_expkey_init(struct svc_expkey *new, struct svc_expkey *item)
+static inline void expkey_init(struct cache_head *cnew,
+ struct cache_head *citem)
{
- cache_get(&item->ek_client->h);
+ struct svc_expkey *new = container_of(cnew, struct svc_expkey, h);
+ struct svc_expkey *item = container_of(citem, struct svc_expkey, h);
+
+ kref_get(&item->ek_client->ref);
new->ek_client = item->ek_client;
new->ek_fsidtype = item->ek_fsidtype;
new->ek_fsid[0] = item->ek_fsid[0];
new->ek_fsid[2] = item->ek_fsid[2];
}
-static inline void svc_expkey_update(struct svc_expkey *new, struct svc_expkey *item)
+static inline void expkey_update(struct cache_head *cnew,
+ struct cache_head *citem)
+{
+ struct svc_expkey *new = container_of(cnew, struct svc_expkey, h);
+ struct svc_expkey *item = container_of(citem, struct svc_expkey, h);
+
+ new->ek_mnt = mntget(item->ek_mnt);
+ new->ek_dentry = dget(item->ek_dentry);
+}
+
+static struct cache_head *expkey_alloc(void)
{
- cache_get(&item->ek_export->h);
- new->ek_export = item->ek_export;
+ struct svc_expkey *i = kmalloc(sizeof(*i), GFP_KERNEL);
+ if (i)
+ return &i->h;
+ else
+ return NULL;
}
-static DefineSimpleCacheLookup(svc_expkey,0) /* no inplace updates */
+static struct cache_detail svc_expkey_cache = {
+ .owner = THIS_MODULE,
+ .hash_size = EXPKEY_HASHMAX,
+ .hash_table = expkey_table,
+ .name = "nfsd.fh",
+ .cache_put = expkey_put,
+ .cache_request = expkey_request,
+ .cache_parse = expkey_parse,
+ .cache_show = expkey_show,
+ .match = expkey_match,
+ .init = expkey_init,
+ .update = expkey_update,
+ .alloc = expkey_alloc,
+};
-#define EXPORT_HASHBITS 8
-#define EXPORT_HASHMAX (1<< EXPORT_HASHBITS)
-#define EXPORT_HASHMASK (EXPORT_HASHMAX -1)
+static struct svc_expkey *
+svc_expkey_lookup(struct svc_expkey *item)
+{
+ struct cache_head *ch;
+ int hash = item->ek_fsidtype;
+ char * cp = (char*)item->ek_fsid;
+ int len = key_len(item->ek_fsidtype);
-static struct cache_head *export_table[EXPORT_HASHMAX];
+ hash ^= hash_mem(cp, len, EXPKEY_HASHBITS);
+ hash ^= hash_ptr(item->ek_client, EXPKEY_HASHBITS);
+ hash &= EXPKEY_HASHMASK;
-static inline int svc_export_hash(struct svc_export *item)
+ ch = sunrpc_cache_lookup(&svc_expkey_cache, &item->h,
+ hash);
+ if (ch)
+ return container_of(ch, struct svc_expkey, h);
+ else
+ return NULL;
+}
+
+static struct svc_expkey *
+svc_expkey_update(struct svc_expkey *new, struct svc_expkey *old)
{
- int rv;
+ struct cache_head *ch;
+ int hash = new->ek_fsidtype;
+ char * cp = (char*)new->ek_fsid;
+ int len = key_len(new->ek_fsidtype);
- rv = hash_ptr(item->ex_client, EXPORT_HASHBITS);
- rv ^= hash_ptr(item->ex_dentry, EXPORT_HASHBITS);
- rv ^= hash_ptr(item->ex_mnt, EXPORT_HASHBITS);
- return rv;
+ hash ^= hash_mem(cp, len, EXPKEY_HASHBITS);
+ hash ^= hash_ptr(new->ek_client, EXPKEY_HASHBITS);
+ hash &= EXPKEY_HASHMASK;
+
+ ch = sunrpc_cache_update(&svc_expkey_cache, &new->h,
+ &old->h, hash);
+ if (ch)
+ return container_of(ch, struct svc_expkey, h);
+ else
+ return NULL;
}
-void svc_export_put(struct cache_head *item, struct cache_detail *cd)
+
+#define EXPORT_HASHBITS 8
+#define EXPORT_HASHMAX (1<< EXPORT_HASHBITS)
+#define EXPORT_HASHMASK (EXPORT_HASHMAX -1)
+
+static struct cache_head *export_table[EXPORT_HASHMAX];
+
+static void svc_export_put(struct kref *ref)
{
- if (cache_put(item, cd)) {
- struct svc_export *exp = container_of(item, struct svc_export, h);
- dput(exp->ex_dentry);
- mntput(exp->ex_mnt);
- auth_domain_put(exp->ex_client);
- kfree(exp);
- }
+ struct svc_export *exp = container_of(ref, struct svc_export, h.ref);
+ dput(exp->ex_dentry);
+ mntput(exp->ex_mnt);
+ auth_domain_put(exp->ex_client);
+ kfree(exp);
}
static void svc_export_request(struct cache_detail *cd,
(*bpp)[-1] = '\n';
}
-static struct svc_export *svc_export_lookup(struct svc_export *, int);
+static struct svc_export *svc_export_update(struct svc_export *new,
+ struct svc_export *old);
+static struct svc_export *svc_export_lookup(struct svc_export *);
static int check_export(struct inode *inode, int flags)
{
if (err) goto out;
}
- expp = svc_export_lookup(&exp, 1);
+ expp = svc_export_lookup(&exp);
if (expp)
- exp_put(expp);
- err = 0;
+ expp = svc_export_update(&exp, expp);
+ else
+ err = -ENOMEM;
cache_flush();
+ if (expp == NULL)
+ err = -ENOMEM;
+ else
+ exp_put(expp);
out:
if (nd.dentry)
path_release(&nd);
seq_puts(m, ")\n");
return 0;
}
+static int svc_export_match(struct cache_head *a, struct cache_head *b)
+{
+ struct svc_export *orig = container_of(a, struct svc_export, h);
+ struct svc_export *new = container_of(b, struct svc_export, h);
+ return orig->ex_client == new->ex_client &&
+ orig->ex_dentry == new->ex_dentry &&
+ orig->ex_mnt == new->ex_mnt;
+}
+
+static void svc_export_init(struct cache_head *cnew, struct cache_head *citem)
+{
+ struct svc_export *new = container_of(cnew, struct svc_export, h);
+ struct svc_export *item = container_of(citem, struct svc_export, h);
+
+ kref_get(&item->ex_client->ref);
+ new->ex_client = item->ex_client;
+ new->ex_dentry = dget(item->ex_dentry);
+ new->ex_mnt = mntget(item->ex_mnt);
+}
+
+static void export_update(struct cache_head *cnew, struct cache_head *citem)
+{
+ struct svc_export *new = container_of(cnew, struct svc_export, h);
+ struct svc_export *item = container_of(citem, struct svc_export, h);
+
+ new->ex_flags = item->ex_flags;
+ new->ex_anon_uid = item->ex_anon_uid;
+ new->ex_anon_gid = item->ex_anon_gid;
+ new->ex_fsid = item->ex_fsid;
+}
+
+static struct cache_head *svc_export_alloc(void)
+{
+ struct svc_export *i = kmalloc(sizeof(*i), GFP_KERNEL);
+ if (i)
+ return &i->h;
+ else
+ return NULL;
+}
+
struct cache_detail svc_export_cache = {
.owner = THIS_MODULE,
.hash_size = EXPORT_HASHMAX,
.cache_request = svc_export_request,
.cache_parse = svc_export_parse,
.cache_show = svc_export_show,
+ .match = svc_export_match,
+ .init = svc_export_init,
+ .update = export_update,
+ .alloc = svc_export_alloc,
};
-static inline int svc_export_match(struct svc_export *a, struct svc_export *b)
+static struct svc_export *
+svc_export_lookup(struct svc_export *exp)
{
- return a->ex_client == b->ex_client &&
- a->ex_dentry == b->ex_dentry &&
- a->ex_mnt == b->ex_mnt;
-}
-static inline void svc_export_init(struct svc_export *new, struct svc_export *item)
-{
- cache_get(&item->ex_client->h);
- new->ex_client = item->ex_client;
- new->ex_dentry = dget(item->ex_dentry);
- new->ex_mnt = mntget(item->ex_mnt);
+ struct cache_head *ch;
+ int hash;
+ hash = hash_ptr(exp->ex_client, EXPORT_HASHBITS);
+ hash ^= hash_ptr(exp->ex_dentry, EXPORT_HASHBITS);
+ hash ^= hash_ptr(exp->ex_mnt, EXPORT_HASHBITS);
+
+ ch = sunrpc_cache_lookup(&svc_export_cache, &exp->h,
+ hash);
+ if (ch)
+ return container_of(ch, struct svc_export, h);
+ else
+ return NULL;
}
-static inline void svc_export_update(struct svc_export *new, struct svc_export *item)
+static struct svc_export *
+svc_export_update(struct svc_export *new, struct svc_export *old)
{
- new->ex_flags = item->ex_flags;
- new->ex_anon_uid = item->ex_anon_uid;
- new->ex_anon_gid = item->ex_anon_gid;
- new->ex_fsid = item->ex_fsid;
+ struct cache_head *ch;
+ int hash;
+ hash = hash_ptr(old->ex_client, EXPORT_HASHBITS);
+ hash ^= hash_ptr(old->ex_dentry, EXPORT_HASHBITS);
+ hash ^= hash_ptr(old->ex_mnt, EXPORT_HASHBITS);
+
+ ch = sunrpc_cache_update(&svc_export_cache, &new->h,
+ &old->h,
+ hash);
+ if (ch)
+ return container_of(ch, struct svc_export, h);
+ else
+ return NULL;
}
-static DefineSimpleCacheLookup(svc_export,1) /* allow inplace updates */
-
-struct svc_expkey *
+static struct svc_expkey *
exp_find_key(svc_client *clp, int fsid_type, u32 *fsidv, struct cache_req *reqp)
{
struct svc_expkey key, *ek;
key.ek_fsidtype = fsid_type;
memcpy(key.ek_fsid, fsidv, key_len(fsid_type));
- ek = svc_expkey_lookup(&key, 0);
+ ek = svc_expkey_lookup(&key);
if (ek != NULL)
if ((err = cache_check(&svc_expkey_cache, &ek->h, reqp)))
ek = ERR_PTR(err);
key.ek_client = clp;
key.ek_fsidtype = fsid_type;
memcpy(key.ek_fsid, fsidv, key_len(fsid_type));
- key.ek_export = exp;
+ key.ek_mnt = exp->ex_mnt;
+ key.ek_dentry = exp->ex_dentry;
key.h.expiry_time = NEVER;
key.h.flags = 0;
- ek = svc_expkey_lookup(&key, 1);
+ ek = svc_expkey_lookup(&key);
+ if (ek)
+ ek = svc_expkey_update(&key,ek);
if (ek) {
- expkey_put(&ek->h, &svc_expkey_cache);
+ cache_put(&ek->h, &svc_expkey_cache);
return 0;
}
return -ENOMEM;
key.ex_mnt = mnt;
key.ex_dentry = dentry;
- exp = svc_export_lookup(&key, 0);
+ exp = svc_export_lookup(&key);
if (exp != NULL)
switch (cache_check(&svc_export_cache, &exp->h, reqp)) {
case 0: break;
ek = exp_get_fsid_key(exp->ex_client, exp->ex_fsid);
if (ek && !IS_ERR(ek)) {
ek->h.expiry_time = get_seconds()-1;
- expkey_put(&ek->h, &svc_expkey_cache);
+ cache_put(&ek->h, &svc_expkey_cache);
}
svc_expkey_cache.nextcheck = get_seconds();
}
ek = exp_get_key(exp->ex_client, inode->i_sb->s_dev, inode->i_ino);
if (ek && !IS_ERR(ek)) {
ek->h.expiry_time = get_seconds()-1;
- expkey_put(&ek->h, &svc_expkey_cache);
+ cache_put(&ek->h, &svc_expkey_cache);
}
svc_expkey_cache.nextcheck = get_seconds();
}
if ((nxp->ex_flags & NFSEXP_FSID) &&
(fsid_key = exp_get_fsid_key(clp, nxp->ex_dev)) &&
!IS_ERR(fsid_key) &&
- fsid_key->ek_export &&
- fsid_key->ek_export != exp)
+ fsid_key->ek_mnt &&
+ (fsid_key->ek_mnt != nd.mnt || fsid_key->ek_dentry != nd.dentry) )
goto finish;
if (exp) {
new.ex_anon_gid = nxp->ex_anon_gid;
new.ex_fsid = nxp->ex_dev;
- exp = svc_export_lookup(&new, 1);
+ exp = svc_export_lookup(&new);
+ if (exp)
+ exp = svc_export_update(&new, exp);
- if (exp == NULL)
+ if (!exp)
goto finish;
- err = 0;
-
if (exp_hash(clp, exp) ||
exp_fsid_hash(clp, exp)) {
/* failed to create at least one index */
if (exp)
exp_put(exp);
if (fsid_key && !IS_ERR(fsid_key))
- expkey_put(&fsid_key->h, &svc_expkey_cache);
+ cache_put(&fsid_key->h, &svc_expkey_cache);
if (clp)
auth_domain_put(clp);
path_release(&nd);
return err;
}
+struct svc_export *
+exp_find(struct auth_domain *clp, int fsid_type, u32 *fsidv,
+ struct cache_req *reqp)
+{
+ struct svc_export *exp;
+ struct svc_expkey *ek = exp_find_key(clp, fsid_type, fsidv, reqp);
+ if (!ek || IS_ERR(ek))
+ return ERR_PTR(PTR_ERR(ek));
+
+ exp = exp_get_by_name(clp, ek->ek_mnt, ek->ek_dentry, reqp);
+ cache_put(&ek->h, &svc_expkey_cache);
+
+ if (!exp || IS_ERR(exp))
+ return ERR_PTR(PTR_ERR(exp));
+ return exp;
+}
+
+
/*
* Called when we need the filehandle for the root of the pseudofs,
* for a given NFSv4 client. The root is defined to be the
struct cache_req *creq)
{
struct svc_expkey *fsid_key;
+ struct svc_export *exp;
int rv;
u32 fsidv[2];
if (!fsid_key || IS_ERR(fsid_key))
return nfserr_perm;
- rv = fh_compose(fhp, fsid_key->ek_export,
- fsid_key->ek_export->ex_dentry, NULL);
- expkey_put(&fsid_key->h, &svc_expkey_cache);
+ exp = exp_get_by_name(clp, fsid_key->ek_mnt, fsid_key->ek_dentry, creq);
+ if (exp == NULL)
+ rv = nfserr_perm;
+ else if (IS_ERR(exp))
+ rv = nfserrno(PTR_ERR(exp));
+ else
+ rv = fh_compose(fhp, exp,
+ fsid_key->ek_dentry, NULL);
+ cache_put(&fsid_key->h, &svc_expkey_cache);
return rv;
}
cache_get(&exp->h);
if (cache_check(&svc_export_cache, &exp->h, NULL))
return 0;
- if (cache_put(&exp->h, &svc_export_cache)) BUG();
+ cache_put(&exp->h, &svc_export_cache);
return svc_export_show(m, &svc_export_cache, cp);
}
*/
if (dom) {
err = auth_unix_forget_old(dom);
- dom->h.expiry_time = get_seconds();
auth_domain_put(dom);
}
char authname[IDMAP_NAMESZ];
};
-#define DefineSimpleCacheLookupMap(STRUCT, FUNC) \
- DefineCacheLookup(struct STRUCT, h, FUNC##_lookup, \
- (struct STRUCT *item, int set), /*no setup */, \
- & FUNC##_cache, FUNC##_hash(item), FUNC##_match(item, tmp), \
- STRUCT##_init(new, item), STRUCT##_update(tmp, item), 0)
-
/* Common entry handling */
#define ENT_HASHBITS 8
#define ENT_HASHMAX (1 << ENT_HASHBITS)
#define ENT_HASHMASK (ENT_HASHMAX - 1)
-static inline void
-ent_init(struct ent *new, struct ent *itm)
+static void
+ent_init(struct cache_head *cnew, struct cache_head *citm)
{
+ struct ent *new = container_of(cnew, struct ent, h);
+ struct ent *itm = container_of(citm, struct ent, h);
+
new->id = itm->id;
new->type = itm->type;
strlcpy(new->authname, itm->authname, sizeof(new->name));
}
-static inline void
-ent_update(struct ent *new, struct ent *itm)
+static void
+ent_put(struct kref *ref)
{
- ent_init(new, itm);
+ struct ent *map = container_of(ref, struct ent, h.ref);
+ kfree(map);
}
-static void
-ent_put(struct cache_head *ch, struct cache_detail *cd)
+static struct cache_head *
+ent_alloc(void)
{
- if (cache_put(ch, cd)) {
- struct ent *map = container_of(ch, struct ent, h);
- kfree(map);
- }
+ struct ent *e = kmalloc(sizeof(*e), GFP_KERNEL);
+ if (e)
+ return &e->h;
+ else
+ return NULL;
}
/*
(*bpp)[-1] = '\n';
}
-static inline int
-idtoname_match(struct ent *a, struct ent *b)
+static int
+idtoname_match(struct cache_head *ca, struct cache_head *cb)
{
+ struct ent *a = container_of(ca, struct ent, h);
+ struct ent *b = container_of(cb, struct ent, h);
+
return (a->id == b->id && a->type == b->type &&
strcmp(a->authname, b->authname) == 0);
}
static int idtoname_parse(struct cache_detail *, char *, int);
-static struct ent *idtoname_lookup(struct ent *, int);
+static struct ent *idtoname_lookup(struct ent *);
+static struct ent *idtoname_update(struct ent *, struct ent *);
static struct cache_detail idtoname_cache = {
.owner = THIS_MODULE,
.cache_parse = idtoname_parse,
.cache_show = idtoname_show,
.warn_no_listener = warn_no_idmapd,
+ .match = idtoname_match,
+ .init = ent_init,
+ .update = ent_init,
+ .alloc = ent_alloc,
};
int
if (ent.h.expiry_time == 0)
goto out;
+ error = -ENOMEM;
+ res = idtoname_lookup(&ent);
+ if (!res)
+ goto out;
+
/* Name */
error = qword_get(&buf, buf1, PAGE_SIZE);
if (error == -EINVAL)
memcpy(ent.name, buf1, sizeof(ent.name));
}
error = -ENOMEM;
- if ((res = idtoname_lookup(&ent, 1)) == NULL)
+ res = idtoname_update(&ent, res);
+ if (res == NULL)
goto out;
- ent_put(&res->h, &idtoname_cache);
+ cache_put(&res->h, &idtoname_cache);
error = 0;
out:
return error;
}
-static DefineSimpleCacheLookupMap(ent, idtoname);
+
+static struct ent *
+idtoname_lookup(struct ent *item)
+{
+ struct cache_head *ch = sunrpc_cache_lookup(&idtoname_cache,
+ &item->h,
+ idtoname_hash(item));
+ if (ch)
+ return container_of(ch, struct ent, h);
+ else
+ return NULL;
+}
+
+static struct ent *
+idtoname_update(struct ent *new, struct ent *old)
+{
+ struct cache_head *ch = sunrpc_cache_update(&idtoname_cache,
+ &new->h, &old->h,
+ idtoname_hash(new));
+ if (ch)
+ return container_of(ch, struct ent, h);
+ else
+ return NULL;
+}
+
/*
* Name -> ID cache
(*bpp)[-1] = '\n';
}
-static inline int
-nametoid_match(struct ent *a, struct ent *b)
+static int
+nametoid_match(struct cache_head *ca, struct cache_head *cb)
{
+ struct ent *a = container_of(ca, struct ent, h);
+ struct ent *b = container_of(cb, struct ent, h);
+
return (a->type == b->type && strcmp(a->name, b->name) == 0 &&
strcmp(a->authname, b->authname) == 0);
}
return 0;
}
-static struct ent *nametoid_lookup(struct ent *, int);
+static struct ent *nametoid_lookup(struct ent *);
+static struct ent *nametoid_update(struct ent *, struct ent *);
static int nametoid_parse(struct cache_detail *, char *, int);
static struct cache_detail nametoid_cache = {
.cache_parse = nametoid_parse,
.cache_show = nametoid_show,
.warn_no_listener = warn_no_idmapd,
+ .match = nametoid_match,
+ .init = ent_init,
+ .update = ent_init,
+ .alloc = ent_alloc,
};
static int
set_bit(CACHE_NEGATIVE, &ent.h.flags);
error = -ENOMEM;
- if ((res = nametoid_lookup(&ent, 1)) == NULL)
+ res = nametoid_lookup(&ent);
+ if (res == NULL)
+ goto out;
+ res = nametoid_update(&ent, res);
+ if (res == NULL)
goto out;
- ent_put(&res->h, &nametoid_cache);
+ cache_put(&res->h, &nametoid_cache);
error = 0;
out:
kfree(buf1);
return (error);
}
-static DefineSimpleCacheLookupMap(ent, nametoid);
+
+static struct ent *
+nametoid_lookup(struct ent *item)
+{
+ struct cache_head *ch = sunrpc_cache_lookup(&nametoid_cache,
+ &item->h,
+ nametoid_hash(item));
+ if (ch)
+ return container_of(ch, struct ent, h);
+ else
+ return NULL;
+}
+
+static struct ent *
+nametoid_update(struct ent *new, struct ent *old)
+{
+ struct cache_head *ch = sunrpc_cache_update(&nametoid_cache,
+ &new->h, &old->h,
+ nametoid_hash(new));
+ if (ch)
+ return container_of(ch, struct ent, h);
+ else
+ return NULL;
+}
/*
* Exported API
}
static inline int
-do_idmap_lookup(struct ent *(*lookup_fn)(struct ent *, int), struct ent *key,
+do_idmap_lookup(struct ent *(*lookup_fn)(struct ent *), struct ent *key,
struct cache_detail *detail, struct ent **item,
struct idmap_defer_req *mdr)
{
- *item = lookup_fn(key, 0);
+ *item = lookup_fn(key);
if (!*item)
return -ENOMEM;
return cache_check(detail, &(*item)->h, &mdr->req);
}
static inline int
-do_idmap_lookup_nowait(struct ent *(*lookup_fn)(struct ent *, int),
+do_idmap_lookup_nowait(struct ent *(*lookup_fn)(struct ent *),
struct ent *key, struct cache_detail *detail,
struct ent **item)
{
int ret = -ENOMEM;
- *item = lookup_fn(key, 0);
+ *item = lookup_fn(key);
if (!*item)
goto out_err;
ret = -ETIMEDOUT;
goto out_put;
return 0;
out_put:
- ent_put(&(*item)->h, detail);
+ cache_put(&(*item)->h, detail);
out_err:
*item = NULL;
return ret;
static int
idmap_lookup(struct svc_rqst *rqstp,
- struct ent *(*lookup_fn)(struct ent *, int), struct ent *key,
+ struct ent *(*lookup_fn)(struct ent *), struct ent *key,
struct cache_detail *detail, struct ent **item)
{
struct idmap_defer_req *mdr;
if (ret)
return ret;
*id = item->id;
- ent_put(&item->h, &nametoid_cache);
+ cache_put(&item->h, &nametoid_cache);
return 0;
}
ret = strlen(item->name);
BUG_ON(ret > IDMAP_NAMESZ);
memcpy(name, item->name, ret);
- ent_put(&item->h, &idtoname_cache);
+ cache_put(&item->h, &idtoname_cache);
return ret;
}
return simple_transaction_read(file, buf, size, pos);
}
-static struct file_operations transaction_ops = {
+static const struct file_operations transaction_ops = {
.write = nfsctl_transaction_write,
.read = nfsctl_transaction_read,
.release = simple_transaction_release,
return seq_open(file, &nfs_exports_op);
}
-static struct file_operations exports_operations = {
+static const struct file_operations exports_operations = {
.open = exports_open,
.read = seq_read,
.llseek = seq_lseek,
nfsd_nr_put++;
}
if (exp) {
- svc_export_put(&exp->h, &svc_export_cache);
+ cache_put(&exp->h, &svc_export_cache);
fhp->fh_export = NULL;
}
return;
return single_open(file, nfsd_proc_show, NULL);
}
-static struct file_operations nfsd_proc_fops = {
+static const struct file_operations nfsd_proc_fops = {
.owner = THIS_MODULE,
.open = nfsd_proc_open,
.read = seq_read,
* after it.
*/
static inline int nfsd_dosync(struct file *filp, struct dentry *dp,
- struct file_operations *fop)
+ const struct file_operations *fop)
{
struct inode *inode = dp->d_inode;
int (*fsync) (struct file *, struct dentry *, int);
#endif /* NTFS_RW */
-struct file_operations ntfs_dir_ops = {
+const struct file_operations ntfs_dir_ops = {
.llseek = generic_file_llseek, /* Seek inside directory. */
.read = generic_read_dir, /* Return -EISDIR. */
.readdir = ntfs_readdir, /* Read directory contents. */
#endif /* NTFS_RW */
-struct file_operations ntfs_file_ops = {
+const struct file_operations ntfs_file_ops = {
.llseek = generic_file_llseek, /* Seek inside file. */
.read = generic_file_read, /* Read from file. */
.aio_read = generic_file_aio_read, /* Async read from file. */
#endif /* NTFS_RW */
};
-struct file_operations ntfs_empty_file_ops = {};
+const struct file_operations ntfs_empty_file_ops = {};
struct inode_operations ntfs_empty_inode_ops = {};
extern struct address_space_operations ntfs_aops;
extern struct address_space_operations ntfs_mst_aops;
-extern struct file_operations ntfs_file_ops;
+extern const struct file_operations ntfs_file_ops;
extern struct inode_operations ntfs_file_inode_ops;
-extern struct file_operations ntfs_dir_ops;
+extern const struct file_operations ntfs_dir_ops;
extern struct inode_operations ntfs_dir_inode_ops;
-extern struct file_operations ntfs_empty_file_ops;
+extern const struct file_operations ntfs_empty_file_ops;
extern struct inode_operations ntfs_empty_inode_ops;
extern struct export_operations ntfs_export_ops;
return ret;
}
-static struct file_operations ocfs2_dlm_debug_fops = {
+static const struct file_operations ocfs2_dlm_debug_fops = {
.open = ocfs2_dlm_debug_open,
.release = ocfs2_dlm_debug_release,
.read = seq_read,
.getattr = ocfs2_getattr,
};
-struct file_operations ocfs2_fops = {
+const struct file_operations ocfs2_fops = {
.read = do_sync_read,
.write = do_sync_write,
.sendfile = generic_file_sendfile,
.aio_write = ocfs2_file_aio_write,
};
-struct file_operations ocfs2_dops = {
+const struct file_operations ocfs2_dops = {
.read = generic_read_dir,
.readdir = ocfs2_readdir,
.fsync = ocfs2_sync_file,
#ifndef OCFS2_FILE_H
#define OCFS2_FILE_H
-extern struct file_operations ocfs2_fops;
-extern struct file_operations ocfs2_dops;
+extern const struct file_operations ocfs2_fops;
+extern const struct file_operations ocfs2_dops;
extern struct inode_operations ocfs2_file_iops;
extern struct inode_operations ocfs2_special_file_iops;
struct ocfs2_alloc_context;
return 0;
}
-static struct file_operations openpromfs_prop_ops = {
+static const struct file_operations openpromfs_prop_ops = {
.read = property_read,
.write = property_write,
.release = property_release,
};
-static struct file_operations openpromfs_nodenum_ops = {
+static const struct file_operations openpromfs_nodenum_ops = {
.read = nodenum_read,
};
-static struct file_operations openprom_operations = {
+static const struct file_operations openprom_operations = {
.read = generic_read_dir,
.readdir = openpromfs_readdir,
};
.sysfs_ops = &part_sysfs_ops,
};
+static inline void partition_sysfs_add_subdir(struct hd_struct *p)
+{
+ struct kobject *k;
+
+ k = kobject_get(&p->kobj);
+ p->holder_dir = kobject_add_dir(k, "holders");
+ kobject_put(k);
+}
+
+static inline void disk_sysfs_add_subdirs(struct gendisk *disk)
+{
+ struct kobject *k;
+
+ k = kobject_get(&disk->kobj);
+ disk->holder_dir = kobject_add_dir(k, "holders");
+ disk->slave_dir = kobject_add_dir(k, "slaves");
+ kobject_put(k);
+}
+
void delete_partition(struct gendisk *disk, int part)
{
struct hd_struct *p = disk->part[part-1];
p->ios[0] = p->ios[1] = 0;
p->sectors[0] = p->sectors[1] = 0;
devfs_remove("%s/part%d", disk->devfs_name, part);
+ if (p->holder_dir)
+ kobject_unregister(p->holder_dir);
kobject_unregister(&p->kobj);
}
p->kobj.parent = &disk->kobj;
p->kobj.ktype = &ktype_part;
kobject_register(&p->kobj);
+ partition_sysfs_add_subdir(p);
disk->part[part-1] = p;
}
if ((err = kobject_add(&disk->kobj)))
return;
disk_sysfs_symlinks(disk);
+ disk_sysfs_add_subdirs(disk);
kobject_uevent(&disk->kobj, KOBJ_ADD);
/* No minors to use for partitions */
devfs_remove_disk(disk);
+ if (disk->holder_dir)
+ kobject_unregister(disk->holder_dir);
+ if (disk->slave_dir)
+ kobject_unregister(disk->slave_dir);
if (disk->driverfs_dev) {
char *disk_name = make_block_name(disk);
sysfs_remove_link(&disk->kobj, "device");
* The file_operations structs are not static because they
* are also used in linux/fs/fifo.c to do operations on FIFOs.
*/
-struct file_operations read_fifo_fops = {
+const struct file_operations read_fifo_fops = {
.llseek = no_llseek,
.read = pipe_read,
.readv = pipe_readv,
.fasync = pipe_read_fasync,
};
-struct file_operations write_fifo_fops = {
+const struct file_operations write_fifo_fops = {
.llseek = no_llseek,
.read = bad_pipe_r,
.write = pipe_write,
.fasync = pipe_write_fasync,
};
-struct file_operations rdwr_fifo_fops = {
+const struct file_operations rdwr_fifo_fops = {
.llseek = no_llseek,
.read = pipe_read,
.readv = pipe_readv,
struct file * filp = list_entry(p, struct file, f_u.fu_list);
struct dentry * dentry = filp->f_dentry;
struct inode * inode;
- struct file_operations *fops;
+ const struct file_operations *fops;
if (dentry->d_op != &proc_dentry_operations)
continue;
#endif
-extern void create_seq_entry(char *name, mode_t mode, struct file_operations *f);
+extern void create_seq_entry(char *name, mode_t mode, const struct file_operations *f);
extern int proc_exe_link(struct inode *, struct dentry **, struct vfsmount **);
extern int proc_tid_stat(struct task_struct *, char *);
extern int proc_tgid_stat(struct task_struct *, char *);
static ssize_t read_kcore(struct file *, char __user *, size_t, loff_t *);
-struct file_operations proc_kcore_operations = {
+const struct file_operations proc_kcore_operations = {
.read = read_kcore,
.open = open_kcore,
};
}
-struct file_operations proc_kmsg_operations = {
+const struct file_operations proc_kmsg_operations = {
.read = kmsg_read,
.poll = kmsg_poll,
.open = kmsg_open,
if (wall_to_monotonic.tv_nsec)
--jif;
- for_each_cpu(i) {
+ for_each_possible_cpu(i) {
int j;
user = cputime64_add(user, kstat_cpu(i).cpustat.user);
struct proc_dir_entry *proc_root_kcore;
-void create_seq_entry(char *name, mode_t mode, struct file_operations *f)
+void create_seq_entry(char *name, mode_t mode, const struct file_operations *f)
{
struct proc_dir_entry *entry;
entry = create_proc_entry(name, mode, NULL);
return 0;
}
-struct file_operations proc_vmcore_operations = {
+const struct file_operations proc_vmcore_operations = {
.read = read_vmcore,
.open = open_vmcore,
};
return 0;
}
-struct file_operations qnx4_dir_operations =
+const struct file_operations qnx4_dir_operations =
{
.read = generic_read_dir,
.readdir = qnx4_readdir,
* We have mostly NULL's here: the current defaults are ok for
* the qnx4 filesystem.
*/
-struct file_operations qnx4_file_operations =
+const struct file_operations qnx4_file_operations =
{
.llseek = generic_file_llseek,
.read = generic_file_read,
.commit_write = simple_commit_write
};
-struct file_operations ramfs_file_operations = {
+const struct file_operations ramfs_file_operations = {
.read = generic_file_read,
.write = generic_file_write,
.mmap = generic_file_mmap,
.commit_write = simple_commit_write
};
-struct file_operations ramfs_file_operations = {
+const struct file_operations ramfs_file_operations = {
.mmap = ramfs_nommu_mmap,
.get_unmapped_area = ramfs_nommu_get_unmapped_area,
.read = generic_file_read,
extern struct address_space_operations ramfs_aops;
-extern struct file_operations ramfs_file_operations;
+extern const struct file_operations ramfs_file_operations;
extern struct inode_operations ramfs_file_inode_operations;
#include <asm/uaccess.h>
#include <asm/unistd.h>
-struct file_operations generic_ro_fops = {
+const struct file_operations generic_ro_fops = {
.llseek = generic_file_llseek,
.read = generic_file_read,
.mmap = generic_file_readonly_mmap,
static int reiserfs_dir_fsync(struct file *filp, struct dentry *dentry,
int datasync);
-struct file_operations reiserfs_dir_operations = {
+const struct file_operations reiserfs_dir_operations = {
.read = generic_read_dir,
.readdir = reiserfs_readdir,
.fsync = reiserfs_dir_fsync,
return generic_file_aio_write(iocb, buf, count, pos);
}
-struct file_operations reiserfs_file_operations = {
+const struct file_operations reiserfs_file_operations = {
.read = generic_file_read,
.write = reiserfs_file_write,
.ioctl = reiserfs_ioctl,
return ret;
}
-static struct file_operations r_file_operations = {
+static const struct file_operations r_file_operations = {
.open = r_open,
.read = seq_read,
.llseek = seq_lseek,
.readpage = romfs_readpage
};
-static struct file_operations romfs_dir_operations = {
+static const struct file_operations romfs_dir_operations = {
.read = generic_read_dir,
.readdir = romfs_readdir,
};
#define ROUND_UP(x,y) (((x)+(y)-1)/(y))
#define DEFAULT_POLLMASK (POLLIN | POLLOUT | POLLRDNORM | POLLWRNORM)
-struct poll_table_entry {
- struct file * filp;
- wait_queue_t wait;
- wait_queue_head_t * wait_address;
-};
-
struct poll_table_page {
struct poll_table_page * next;
struct poll_table_entry * entry;
init_poll_funcptr(&pwq->pt, __pollwait);
pwq->error = 0;
pwq->table = NULL;
+ pwq->inline_index = 0;
}
EXPORT_SYMBOL(poll_initwait);
+static void free_poll_entry(struct poll_table_entry *entry)
+{
+ remove_wait_queue(entry->wait_address,&entry->wait);
+ fput(entry->filp);
+}
+
void poll_freewait(struct poll_wqueues *pwq)
{
struct poll_table_page * p = pwq->table;
+ int i;
+ for (i = 0; i < pwq->inline_index; i++)
+ free_poll_entry(pwq->inline_entries + i);
while (p) {
struct poll_table_entry * entry;
struct poll_table_page *old;
entry = p->entry;
do {
entry--;
- remove_wait_queue(entry->wait_address,&entry->wait);
- fput(entry->filp);
+ free_poll_entry(entry);
} while (entry > p->entries);
old = p;
p = p->next;
EXPORT_SYMBOL(poll_freewait);
-static void __pollwait(struct file *filp, wait_queue_head_t *wait_address,
- poll_table *_p)
+static struct poll_table_entry *poll_get_entry(poll_table *_p)
{
struct poll_wqueues *p = container_of(_p, struct poll_wqueues, pt);
struct poll_table_page *table = p->table;
+ if (p->inline_index < N_INLINE_POLL_ENTRIES)
+ return p->inline_entries + p->inline_index++;
+
if (!table || POLL_TABLE_FULL(table)) {
struct poll_table_page *new_table;
if (!new_table) {
p->error = -ENOMEM;
__set_current_state(TASK_RUNNING);
- return;
+ return NULL;
}
new_table->entry = new_table->entries;
new_table->next = table;
table = new_table;
}
- /* Add a new entry */
- {
- struct poll_table_entry * entry = table->entry;
- table->entry = entry+1;
- get_file(filp);
- entry->filp = filp;
- entry->wait_address = wait_address;
- init_waitqueue_entry(&entry->wait, current);
- add_wait_queue(wait_address,&entry->wait);
- }
+ return table->entry++;
+}
+
+/* Add a new entry */
+static void __pollwait(struct file *filp, wait_queue_head_t *wait_address,
+ poll_table *p)
+{
+ struct poll_table_entry *entry = poll_get_entry(p);
+ if (!entry)
+ return;
+ get_file(filp);
+ entry->filp = filp;
+ entry->wait_address = wait_address;
+ init_waitqueue_entry(&entry->wait, current);
+ add_wait_queue(wait_address,&entry->wait);
}
#define FDS_IN(fds, n) (fds->in + n)
for (i = 0; i < n; ++rinp, ++routp, ++rexp) {
unsigned long in, out, ex, all_bits, bit = 1, mask, j;
unsigned long res_in = 0, res_out = 0, res_ex = 0;
- struct file_operations *f_op = NULL;
+ const struct file_operations *f_op = NULL;
struct file *file = NULL;
in = *inp++; out = *outp++; ex = *exp++;
}
for (j = 0; j < __NFDBITS; ++j, ++i, bit <<= 1) {
+ int fput_needed;
if (i >= n)
break;
if (!(bit & all_bits))
continue;
- file = fget(i);
+ file = fget_light(i, &fput_needed);
if (file) {
f_op = file->f_op;
mask = DEFAULT_POLLMASK;
if (f_op && f_op->poll)
mask = (*f_op->poll)(file, retval ? NULL : wait);
- fput(file);
+ fput_light(file, fput_needed);
if ((mask & POLLIN_SET) && (in & bit)) {
res_in |= bit;
retval++;
return retval;
}
-static void *select_bits_alloc(int size)
-{
- return kmalloc(6 * size, GFP_KERNEL);
-}
-
-static void select_bits_free(void *bits, int size)
-{
- kfree(bits);
-}
-
/*
* We can actually return ERESTARTSYS instead of EINTR, but I'd
* like to be certain this leads to no problems. So I return
char *bits;
int ret, size, max_fdset;
struct fdtable *fdt;
+ /* Allocate small arguments on the stack to save memory and be faster */
+ char stack_fds[SELECT_STACK_ALLOC];
ret = -EINVAL;
if (n < 0)
*/
ret = -ENOMEM;
size = FDS_BYTES(n);
- bits = select_bits_alloc(size);
+ if (6*size < SELECT_STACK_ALLOC)
+ bits = stack_fds;
+ else
+ bits = kmalloc(6 * size, GFP_KERNEL);
if (!bits)
goto out_nofds;
fds.in = (unsigned long *) bits;
ret = -EFAULT;
out:
- select_bits_free(bits, size);
+ if (bits != stack_fds)
+ kfree(bits);
out_nofds:
return ret;
}
fdp = fdpage+i;
fd = fdp->fd;
if (fd >= 0) {
- struct file * file = fget(fd);
+ int fput_needed;
+ struct file * file = fget_light(fd, &fput_needed);
mask = POLLNVAL;
if (file != NULL) {
mask = DEFAULT_POLLMASK;
if (file->f_op && file->f_op->poll)
mask = file->f_op->poll(file, *pwait);
mask &= fdp->events | POLLERR | POLLHUP;
- fput(file);
+ fput_light(file, fput_needed);
}
if (mask) {
*pwait = NULL;
return count;
}
+#define N_STACK_PPS ((sizeof(stack_pps) - sizeof(struct poll_list)) / \
+ sizeof(struct pollfd))
+
int do_sys_poll(struct pollfd __user *ufds, unsigned int nfds, s64 *timeout)
{
struct poll_wqueues table;
struct poll_list *walk;
struct fdtable *fdt;
int max_fdset;
+ /* Allocate small arguments on the stack to save memory and be faster */
+ char stack_pps[POLL_STACK_ALLOC];
+ struct poll_list *stack_pp = NULL;
/* Do a sanity check on nfds ... */
rcu_read_lock();
err = -ENOMEM;
while(i!=0) {
struct poll_list *pp;
- pp = kmalloc(sizeof(struct poll_list)+
- sizeof(struct pollfd)*
- (i>POLLFD_PER_PAGE?POLLFD_PER_PAGE:i),
- GFP_KERNEL);
- if(pp==NULL)
- goto out_fds;
+ int num, size;
+ if (stack_pp == NULL)
+ num = N_STACK_PPS;
+ else
+ num = POLLFD_PER_PAGE;
+ if (num > i)
+ num = i;
+ size = sizeof(struct poll_list) + sizeof(struct pollfd)*num;
+ if (!stack_pp)
+ stack_pp = pp = (struct poll_list *)stack_pps;
+ else {
+ pp = kmalloc(size, GFP_KERNEL);
+ if (!pp)
+ goto out_fds;
+ }
pp->next=NULL;
- pp->len = (i>POLLFD_PER_PAGE?POLLFD_PER_PAGE:i);
+ pp->len = num;
if (head == NULL)
head = pp;
else
walk = pp;
if (copy_from_user(pp->entries, ufds + nfds-i,
- sizeof(struct pollfd)*pp->len)) {
+ sizeof(struct pollfd)*num)) {
err = -EFAULT;
goto out_fds;
}
walk = head;
while(walk!=NULL) {
struct poll_list *pp = walk->next;
- kfree(walk);
+ if (walk != stack_pp)
+ kfree(walk);
walk = pp;
}
poll_freewait(&table);
static int smb_make_node(struct inode *,struct dentry *,int,dev_t);
static int smb_link(struct dentry *, struct inode *, struct dentry *);
-struct file_operations smb_dir_operations =
+const struct file_operations smb_dir_operations =
{
.read = generic_read_dir,
.readdir = smb_readdir,
return error;
}
-struct file_operations smb_file_operations =
+const struct file_operations smb_file_operations =
{
.llseek = remote_llseek,
.read = smb_file_read,
extern int smb_proc_link(struct smb_sb_info *server, struct dentry *dentry, struct dentry *new_dentry);
extern void smb_install_null_ops(struct smb_ops *ops);
/* dir.c */
-extern struct file_operations smb_dir_operations;
+extern const struct file_operations smb_dir_operations;
extern struct inode_operations smb_dir_inode_operations;
extern struct inode_operations smb_dir_inode_operations_unix;
extern void smb_new_dentry(struct dentry *dentry);
extern int smb_notify_change(struct dentry *dentry, struct iattr *attr);
/* file.c */
extern struct address_space_operations smb_file_aops;
-extern struct file_operations smb_file_operations;
+extern const struct file_operations smb_file_operations;
extern struct inode_operations smb_file_inode_operations;
/* ioctl.c */
extern int smb_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg);
return 0;
}
-struct file_operations bin_fops = {
+const struct file_operations bin_fops = {
.read = read,
.write = write,
.mmap = mmap,
return offset;
}
-struct file_operations sysfs_dir_operations = {
+const struct file_operations sysfs_dir_operations = {
.open = sysfs_dir_open,
.release = sysfs_dir_close,
.llseek = sysfs_dir_lseek,
return 0;
}
-struct file_operations sysfs_file_operations = {
+const struct file_operations sysfs_file_operations = {
.read = sysfs_read_file,
.write = sysfs_write_file,
.llseek = generic_file_llseek,
extern struct rw_semaphore sysfs_rename_sem;
extern struct super_block * sysfs_sb;
-extern struct file_operations sysfs_dir_operations;
-extern struct file_operations sysfs_file_operations;
-extern struct file_operations bin_fops;
+extern const struct file_operations sysfs_dir_operations;
+extern const struct file_operations sysfs_file_operations;
+extern const struct file_operations bin_fops;
extern struct inode_operations sysfs_dir_inode_operations;
extern struct inode_operations sysfs_symlink_inode_operations;
static int sysv_readdir(struct file *, void *, filldir_t);
-struct file_operations sysv_dir_operations = {
+const struct file_operations sysv_dir_operations = {
.read = generic_read_dir,
.readdir = sysv_readdir,
.fsync = sysv_sync_file,
* We have mostly NULLs here: the current defaults are OK for
* the coh filesystem.
*/
-struct file_operations sysv_file_operations = {
+const struct file_operations sysv_file_operations = {
.llseek = generic_file_llseek,
.read = generic_file_read,
.write = generic_file_write,
extern struct inode_operations sysv_file_inode_operations;
extern struct inode_operations sysv_dir_inode_operations;
extern struct inode_operations sysv_fast_symlink_inode_operations;
-extern struct file_operations sysv_file_operations;
-extern struct file_operations sysv_dir_operations;
+extern const struct file_operations sysv_file_operations;
+extern const struct file_operations sysv_dir_operations;
extern struct address_space_operations sysv_aops;
extern struct super_operations sysv_sops;
extern struct dentry_operations sysv_dentry_operations;
/* readdir and lookup functions */
-struct file_operations udf_dir_operations = {
+const struct file_operations udf_dir_operations = {
.read = generic_read_dir,
.readdir = udf_readdir,
.ioctl = udf_ioctl,
return 0;
}
-struct file_operations udf_file_operations = {
+const struct file_operations udf_file_operations = {
.read = generic_file_read,
.ioctl = udf_ioctl,
.open = generic_file_open,
struct super_block;
extern struct inode_operations udf_dir_inode_operations;
-extern struct file_operations udf_dir_operations;
+extern const struct file_operations udf_dir_operations;
extern struct inode_operations udf_file_inode_operations;
-extern struct file_operations udf_file_operations;
+extern const struct file_operations udf_file_operations;
extern struct address_space_operations udf_aops;
extern struct address_space_operations udf_adinicb_aops;
extern struct address_space_operations udf_symlink_aops;
return 1;
}
-struct file_operations ufs_dir_operations = {
+const struct file_operations ufs_dir_operations = {
.read = generic_read_dir,
.readdir = ufs_readdir,
.fsync = file_fsync,
* the ufs filesystem.
*/
-struct file_operations ufs_file_operations = {
+const struct file_operations ufs_file_operations = {
.llseek = generic_file_llseek,
.read = generic_file_read,
.write = generic_file_write,
}
#endif /* HAVE_FOP_OPEN_EXEC */
-struct file_operations xfs_file_operations = {
+const struct file_operations xfs_file_operations = {
.llseek = generic_file_llseek,
.read = do_sync_read,
.write = do_sync_write,
#endif
};
-struct file_operations xfs_invis_file_operations = {
+const struct file_operations xfs_invis_file_operations = {
.llseek = generic_file_llseek,
.read = do_sync_read,
.write = do_sync_write,
};
-struct file_operations xfs_dir_file_operations = {
+const struct file_operations xfs_dir_file_operations = {
.read = generic_read_dir,
.readdir = xfs_file_readdir,
.unlocked_ioctl = xfs_file_ioctl,
extern struct inode_operations xfs_dir_inode_operations;
extern struct inode_operations xfs_symlink_inode_operations;
-extern struct file_operations xfs_file_operations;
-extern struct file_operations xfs_dir_file_operations;
-extern struct file_operations xfs_invis_file_operations;
+extern const struct file_operations xfs_file_operations;
+extern const struct file_operations xfs_dir_file_operations;
+extern const struct file_operations xfs_invis_file_operations;
extern int xfs_ioctl(struct bhv_desc *, struct inode *, struct file *,
int, unsigned int, void __user *);
#define kvaddr_to_nid(kaddr) pa_to_nid(__pa(kaddr))
#define node_start_pfn(nid) (NODE_DATA(nid)->node_start_pfn)
-#define local_mapnr(kvaddr) \
- ((__pa(kvaddr) >> PAGE_SHIFT) - node_start_pfn(kvaddr_to_nid(kvaddr)))
-
/*
* Given a kaddr, LOCAL_BASE_ADDR finds the owning node of the memory
* and returns the kaddr corresponding to first physical page in the
pte_t pte; \
unsigned long pfn; \
\
- pfn = ((unsigned long)((page)-page_zone(page)->zone_mem_map)) << 32; \
- pfn += page_zone(page)->zone_start_pfn << 32; \
+ pfn = page_to_pfn(page) << 32; \
pte_val(pte) = pfn | pgprot_val(pgprot); \
\
pte; \
__xx; \
})
-#define pfn_to_page(pfn) \
-({ \
- unsigned long kaddr = (unsigned long)__va((pfn) << PAGE_SHIFT); \
- (NODE_DATA(kvaddr_to_nid(kaddr))->node_mem_map + local_mapnr(kaddr)); \
-})
-
-#define page_to_pfn(page) \
- ((page) - page_zone(page)->zone_mem_map + \
- (page_zone(page)->zone_start_pfn))
-
#define page_to_pa(page) \
- ((( (page) - page_zone(page)->zone_mem_map ) \
- + page_zone(page)->zone_start_pfn) << PAGE_SHIFT)
+ (page_to_pfn(page) << PAGE_SHIFT)
#define pfn_to_nid(pfn) pa_to_nid(((u64)(pfn) << PAGE_SHIFT))
#define pfn_valid(pfn) \
#define __pa(x) ((unsigned long) (x) - PAGE_OFFSET)
#define __va(x) ((void *)((unsigned long) (x) + PAGE_OFFSET))
#ifndef CONFIG_DISCONTIGMEM
-#define pfn_to_page(pfn) (mem_map + (pfn))
-#define page_to_pfn(page) ((unsigned long)((page) - mem_map))
#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
#define pfn_valid(pfn) ((pfn) < max_mapnr)
#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
-
#endif /* __KERNEL__ */
+#include <asm-generic/memory_model.h>
#include <asm-generic/page.h>
#endif /* _ALPHA_PAGE_H */
#define POLLWRNORM (1 << 8)
#define POLLWRBAND (1 << 9)
#define POLLMSG (1 << 10)
-#define POLLREMOVE (1 << 11)
-#define POLLRDHUP (1 << 12)
+#define POLLREMOVE (1 << 12)
+#define POLLRDHUP (1 << 13)
struct pollfd {
#define UART(x) (*(volatile unsigned long *)(serial_port + (x)))
-static void putstr( const char *s )
+static void putc(int c)
{
unsigned long serial_port;
do {
return;
} while (0);
- for (; *s; s++) {
- /* wait for space in the UART's transmitter */
- while ((UART(UART_SR) & UART_SR_TxFF));
- /* send the character out. */
- UART(UART_DR) = *s;
- /* if a LF, also do CR... */
- if (*s == 10) {
- while ((UART(UART_SR) & UART_SR_TxFF));
- UART(UART_DR) = 13;
- }
- }
+ /* wait for space in the UART's transmitter */
+ while ((UART(UART_SR) & UART_SR_TxFF))
+ barrier();
+
+ /* send the character out. */
+ UART(UART_DR) = c;
+}
+
+static inline void flush(void)
+{
}
#define arch_decomp_setup()
*
* This does not append a newline
*/
-static void putstr(const char *s)
+static void putc(int c)
+{
+ void __iomem *sys = (void __iomem *) AT91_BASE_SYS; /* physical address */
+
+ while (!(__raw_readl(sys + AT91_DBGU_SR) & AT91_DBGU_TXRDY))
+ barrier();
+ __raw_writel(c, sys + AT91_DBGU_THR);
+}
+
+static inline void flush(void)
{
void __iomem *sys = (void __iomem *) AT91_BASE_SYS; /* physical address */
- while (*s) {
- while (!(__raw_readl(sys + AT91_DBGU_SR) & AT91_DBGU_TXRDY)) { barrier(); }
- __raw_writel(*s, sys + AT91_DBGU_THR);
- if (*s == '\n') {
- while (!(__raw_readl(sys + AT91_DBGU_SR) & AT91_DBGU_TXRDY)) { barrier(); }
- __raw_writel('\r', sys + AT91_DBGU_THR);
- }
- s++;
- }
/* wait for transmission to complete */
- while (!(__raw_readl(sys + AT91_DBGU_SR) & AT91_DBGU_TXEMPTY)) { barrier(); }
+ while (!(__raw_readl(sys + AT91_DBGU_SR) & AT91_DBGU_TXEMPTY))
+ barrier();
}
#define arch_decomp_setup()
*
* Copyright (C) 1999, 2000 Nexus Electronics Ltd.
*/
-
#define BASE 0x03010000
#define SERBASE (BASE + (0x2f8 << 2))
-static __inline__ void putc(char c)
+static inline void putc(char c)
{
- while (!(*((volatile unsigned int *)(SERBASE + 0x14)) & 0x20));
+ while (!(*((volatile unsigned int *)(SERBASE + 0x14)) & 0x20))
+ barrier();
+
*((volatile unsigned int *)(SERBASE)) = c;
}
-/*
- * This does not append a newline
- */
-static void putstr(const char *s)
+static inline void flush(void)
{
- while (*s) {
- putc(*s);
- if (*s == '\n')
- putc('\r');
- s++;
- }
}
static __inline__ void arch_decomp_setup(void)
#undef CLPS7111_BASE
#define CLPS7111_BASE CLPS7111_PHYS_BASE
-#define barrier() __asm__ __volatile__("": : :"memory")
#define __raw_readl(p) (*(unsigned long *)(p))
#define __raw_writel(v,p) (*(unsigned long *)(p) = (v))
/*
* This does not append a newline
*/
-static void putstr(const char *s)
+static inline void putc(int c)
{
- char c;
-
- while ((c = *s++) != '\0') {
- while (clps_readl(SYSFLGx) & SYSFLG_UTXFF)
- barrier();
- clps_writel(c, UARTDRx);
+ while (clps_readl(SYSFLGx) & SYSFLG_UTXFF)
+ barrier();
+ clps_writel(c, UARTDRx);
+}
- if (c == '\n') {
- while (clps_readl(SYSFLGx) & SYSFLG_UTXFF)
- barrier();
- clps_writel('\r', UARTDRx);
- }
- }
+static inline void flush(void)
+{
while (clps_readl(SYSFLGx) & SYSFLG_UBUSY)
barrier();
}
* published by the Free Software Foundation.
*/
+#include <linux/serial_reg.h>
+
+#define SERIAL_BASE ((unsigned char *)0xfe000be0)
+
/*
* This does not append a newline
*/
-static void putstr(const char *s)
+static inline void putc(int c)
+{
+ unsigned char v, *base = SERIAL_BASE;
+
+ do {
+ v = base[UART_LSR << 2];
+ barrier();
+ } while (!(v & UART_LSR_THRE));
+
+ base[UART_TX << 2] = c;
+}
+
+static inline void flush(void)
{
- unsigned long tmp1, tmp2;
- __asm__ __volatile__(
- "ldrb %0, [%2], #1\n"
-" teq %0, #0\n"
-" beq 3f\n"
-"1: strb %0, [%3]\n"
-"2: ldrb %1, [%3, #0x14]\n"
-" and %1, %1, #0x60\n"
-" teq %1, #0x60\n"
-" bne 2b\n"
-" teq %0, #'\n'\n"
-" moveq %0, #'\r'\n"
-" beq 1b\n"
-" ldrb %0, [%2], #1\n"
-" teq %0, #0\n"
-" bne 1b\n"
-"3: ldrb %1, [%3, #0x14]\n"
-" and %1, %1, #0x60\n"
-" teq %1, #0x60\n"
-" bne 3b"
- : "=&r" (tmp1), "=&r" (tmp2)
- : "r" (s), "r" (0xf0000be0) : "cc");
+ unsigned char v, *base = SERIAL_BASE;
+
+ do {
+ v = base[UART_LSR << 2];
+ barrier();
+ } while ((v & (UART_LSR_TEMT|UART_LSR_THRE)) !=
+ (UART_LSR_TEMT|UART_LSR_THRE));
}
/*
#define DC21285_BASE ((volatile unsigned int *)0x42000160)
#define SER0_BASE ((volatile unsigned char *)0x7c0003f8)
-static __inline__ void putc(char c)
+static inline void putc(char c)
{
if (machine_is_netwinder()) {
- while ((SER0_BASE[5] & 0x60) != 0x60);
+ while ((SER0_BASE[5] & 0x60) != 0x60)
+ barrier();
SER0_BASE[0] = c;
} else {
while (DC21285_BASE[6] & 8);
}
}
-/*
- * This does not append a newline
- */
-static void putstr(const char *s)
+static inline void flush(void)
{
- while (*s) {
- putc(*s);
- if (*s == '\n')
- putc('\r');
- s++;
- }
}
/*
return *((volatile unsigned char *)ptr);
}
+static unsigned int __raw_readl(unsigned int ptr)
+{
+ return *((volatile unsigned int *)ptr);
+}
+
static void __raw_writeb(unsigned char value, unsigned int ptr)
{
*((volatile unsigned char *)ptr) = value;
}
+static void __raw_writel(unsigned int value, unsigned int ptr)
+{
+ *((volatile unsigned int *)ptr) = value;
+}
+
#define PHYS_UART1_DATA 0x808c0000
#define PHYS_UART1_FLAG 0x808c0018
#define UART1_FLAG_TXFF 0x20
-static __inline__ void putc(char c)
+static inline void putc(int c)
{
int i;
__raw_writeb(c, PHYS_UART1_DATA);
}
-static void putstr(const char *s)
+static inline void flush(void)
{
- while (*s) {
- putc(*s);
- if (*s == '\n')
- putc('\r');
- s++;
- }
}
-#define arch_decomp_setup()
+
+/*
+ * Some bootloaders don't turn off DMA from the ethernet MAC before
+ * jumping to linux, which means that we might end up with bits of RX
+ * status and packet data scribbled over the uncompressed kernel image.
+ * Work around this by resetting the ethernet MAC before we uncompress.
+ */
+#define PHYS_ETH_SELF_CTL 0x80010020
+#define ETH_SELF_CTL_RESET 0x00000001
+
+static void ethernet_reset(void)
+{
+ unsigned int v;
+
+ /* Reset the ethernet MAC. */
+ v = __raw_readl(PHYS_ETH_SELF_CTL);
+ __raw_writel(v | ETH_SELF_CTL_RESET, PHYS_ETH_SELF_CTL);
+
+ /* Wait for reset to finish. */
+ while (__raw_readl(PHYS_ETH_SELF_CTL) & ETH_SELF_CTL_RESET)
+ ;
+}
+
+
+static void arch_decomp_setup(void)
+{
+ ethernet_reset();
+}
+
#define arch_decomp_wdog()
#define LSR 0x14
#define TEMPTY 0x40
-static void putstr(const char *s)
+static inline void putc(int c)
{
- char c;
volatile unsigned char *p = (volatile unsigned char *)(IO_PHYS+0x20000);
- while ( (c = *s++) != '\0') {
- /* wait until transmit buffer is empty */
- while((p[LSR] & TEMPTY) == 0x0);
- /* write next character */
- *p = c;
-
- if(c == '\n') {
- while((p[LSR] & TEMPTY) == 0x0);
- *p = '\r';
- }
- }
+ /* wait until transmit buffer is empty */
+ while((p[LSR] & TEMPTY) == 0x0)
+ barrier();
+
+ /* write next character */
+ *p = c;
+}
+
+static inline void flush(void)
+{
}
/*
*
* This does not append a newline
*/
-static void
-putstr(const char *s)
+static void putc(int c)
{
unsigned long serial_port;
return;
} while(0);
- while (*s) {
- while ( !(UART(USR2) & USR2_TXFE) )
- barrier();
+ while (!(UART(USR2) & USR2_TXFE))
+ barrier();
- UART(TXR) = *s;
-
- if (*s == '\n') {
- while ( !(UART(USR2) & USR2_TXFE) )
- barrier();
+ UART(TXR) = c;
+}
- UART(TXR) = '\r';
- }
- s++;
- }
+static inline void flush(void)
+{
}
/*
/*
* This does not append a newline
*/
-static void putstr(const char *s)
+static void putc(int c)
{
- while (*s) {
- while (AMBA_UART_FR & (1 << 5));
+ while (AMBA_UART_FR & (1 << 5))
+ barrier();
- AMBA_UART_DR = *s;
-
- if (*s == '\n') {
- while (AMBA_UART_FR & (1 << 5));
+ AMBA_UART_DR = c;
+}
- AMBA_UART_DR = '\r';
- }
- s++;
- }
- while (AMBA_UART_FR & (1 << 3));
+static inline void flush(void)
+{
+ while (AMBA_UART_FR & (1 << 3))
+ barrier();
}
/*
#define TX_DONE (UART_LSR_TEMT|UART_LSR_THRE)
-static __inline__ void putc(char c)
+static inline void putc(char c)
{
- while ((uart_base[UART_LSR] & TX_DONE) != TX_DONE);
+ while ((uart_base[UART_LSR] & TX_DONE) != TX_DONE)
+ barrier();
*uart_base = c;
}
-/*
- * This does not append a newline
- */
-static void putstr(const char *s)
+static inline void flush(void)
{
- while (*s) {
- putc(*s);
- if (*s == '\n')
- putc('\r');
- s++;
- }
}
static __inline__ void __arch_decomp_setup(unsigned long arch_id)
#define UARTSR PHYS(0x14) /* Status reg */
-static __inline__ void putc(char c)
+static inline void putc(int c)
{
int j = 0x1000;
- while (--j && !(*UARTSR & UART_LSR_THRE));
+ while (--j && !(*UARTSR & UART_LSR_THRE))
+ barrier();
+
*UARTDR = c;
}
-static void putstr(const char *s)
+static inline void flush(void)
{
- while (*s)
- {
- putc(*s);
- if (*s == '\n')
- putc('\r');
- s++;
- }
}
#define arch_decomp_setup()
--- /dev/null
+/*
+ * include/asm-arm/arch-ixp23xx/debug-macro.S
+ *
+ * Debugging macro include header
+ *
+ * Copyright (C) 1994-1999 Russell King
+ * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <asm/arch/ixp23xx.h>
+
+ .macro addruart,rx
+ mrc p15, 0, \rx, c1, c0
+ tst \rx, #1 @ mmu enabled?
+ ldreq \rx, =IXP23XX_PERIPHERAL_PHYS @ physical
+ ldrne \rx, =IXP23XX_PERIPHERAL_VIRT @ virtual
+ .endm
+
+#define UART_SHIFT 2
+#include <asm/hardware/debug-8250.S>
--- /dev/null
+/*
+ * include/asm-arm/arch-ixp23xx/dma.h
+ */
--- /dev/null
+/*
+ * include/asm-arm/arch-ixp23xx/entry-macro.S
+ */
+
+ .macro disable_fiq
+ .endm
+
+ .macro get_irqnr_and_base, irqnr, irqstat, base, tmp
+ ldr \irqnr, =(IXP23XX_INTC_VIRT + IXP23XX_INTR_IRQ_ENC_ST_OFFSET)
+ ldr \irqnr, [\irqnr] @ get interrupt number
+ cmp \irqnr, #0x0 @ suprious interrupt ?
+ movne \irqnr, \irqnr, lsr #2 @ skip unwanted low order bits
+ subne \irqnr, \irqnr, #1 @ convert to 0 based
+
+#if 0
+ cmp \irqnr, #IRQ_IXP23XX_PCI_INT_RPH
+ bne 1001f
+ mov \irqnr, #IRQ_IXP23XX_INTA
+
+ ldr \irqnr, =0xf5000030
+
+ mov \tmp, #(1<<26)
+ tst \irqnr, \tmp
+ movne \irqnr, #IRQ_IXP23XX_INTB
+
+ mov \tmp, #(1<<27)
+ tst \irqnr, \tmp
+ movne \irqnr, #IRQ_IXP23XX_INTA
+1001:
+#endif
+ .endm
--- /dev/null
+/*
+ * include/asm-arm/arch-ixp23xx/hardware.h
+ *
+ * Copyright (C) 2002-2004 Intel Corporation.
+ * Copyricht (C) 2005 MontaVista Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Hardware definitions for IXP23XX based systems
+ */
+
+#ifndef __ASM_ARCH_HARDWARE_H
+#define __ASM_ARCH_HARDWARE_H
+
+/* PCI IO info */
+#define PCIO_BASE IXP23XX_PCI_IO_VIRT
+#define PCIBIOS_MIN_IO 0x00000000
+#define PCIBIOS_MIN_MEM 0xe0000000
+
+#include "ixp23xx.h"
+
+#define pcibios_assign_all_busses() 0
+
+/*
+ * Platform helper functions
+ */
+#include "platform.h"
+
+/*
+ * Platform-specific headers
+ */
+#include "ixdp2351.h"
+
+
+#endif
--- /dev/null
+/*
+ * include/asm-arm/arch-ixp23xx/io.h
+ *
+ * Original Author: Naeem M Afzal <naeem.m.afzal@intel.com>
+ * Maintainer: Deepak Saxena <dsaxena@plexity.net>
+ *
+ * Copyright (C) 2003-2005 Intel Corp.
+ * Copyright (C) 2005 MontaVista Software, Inc
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __ASM_ARCH_IO_H
+#define __ASM_ARCH_IO_H
+
+#define IO_SPACE_LIMIT 0xffffffff
+
+#define __io(p) ((void __iomem*)((p) + IXP23XX_PCI_IO_VIRT))
+#define __mem_pci(a) (a)
+
+#include <linux/kernel.h> /* For BUG */
+
+static inline void __iomem *
+ixp23xx_ioremap(unsigned long addr, unsigned long size, unsigned long flags)
+{
+ if (addr >= IXP23XX_PCI_MEM_START &&
+ addr <= IXP23XX_PCI_MEM_START + IXP23XX_PCI_MEM_SIZE) {
+ if (addr + size > IXP23XX_PCI_MEM_START + IXP23XX_PCI_MEM_SIZE)
+ return NULL;
+
+ return (void __iomem *)
+ ((addr - IXP23XX_PCI_MEM_START) + IXP23XX_PCI_MEM_VIRT);
+ }
+
+ return __ioremap(addr, size, flags);
+}
+
+static inline void
+ixp23xx_iounmap(void __iomem *addr)
+{
+ if ((((u32)addr) >= IXP23XX_PCI_MEM_VIRT) &&
+ (((u32)addr) < IXP23XX_PCI_MEM_VIRT + IXP23XX_PCI_MEM_SIZE))
+ return;
+
+ __iounmap(addr);
+}
+
+#define __arch_ioremap(a,s,f) ixp23xx_ioremap(a,s,f)
+#define __arch_iounmap(a) ixp23xx_iounmap(a)
+
+
+#endif
--- /dev/null
+/*
+ * include/asm-arm/arch-ixp23xx/irqs.h
+ *
+ * IRQ definitions for IXP23XX based systems
+ *
+ * Author: Naeem Afzal <naeem.m.afzal@intel.com>
+ *
+ * Copyright (C) 2003-2004 Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __ASM_ARCH_IRQS_H
+#define __ASM_ARCH_IRQS_H
+
+#define NR_IXP23XX_IRQS IRQ_IXP23XX_INTB+1
+#define IRQ_IXP23XX_EXTIRQS NR_IXP23XX_IRQS
+
+
+#define IRQ_IXP23XX_DBG0 0 /* Debug/Execution/MBox */
+#define IRQ_IXP23XX_DBG1 1 /* Debug/Execution/MBox */
+#define IRQ_IXP23XX_NPE_TRG 2 /* npe_trigger */
+#define IRQ_IXP23XX_TIMER1 3 /* Timer[0] */
+#define IRQ_IXP23XX_TIMER2 4 /* Timer[1] */
+#define IRQ_IXP23XX_TIMESTAMP 5 /* Timer[2], Time-stamp */
+#define IRQ_IXP23XX_WDOG 6 /* Time[3], Watchdog Timer */
+#define IRQ_IXP23XX_PCI_DBELL 7 /* PCI Doorbell */
+#define IRQ_IXP23XX_PCI_DMA1 8 /* PCI DMA Channel 1 */
+#define IRQ_IXP23XX_PCI_DMA2 9 /* PCI DMA Channel 2 */
+#define IRQ_IXP23XX_PCI_DMA3 10 /* PCI DMA Channel 3 */
+#define IRQ_IXP23XX_PCI_INT_RPH 11 /* pcxg_pci_int_rph */
+#define IRQ_IXP23XX_CPP_PMU 12 /* xpxg_pm_int_rpl */
+#define IRQ_IXP23XX_SWINT0 13 /* S/W Interrupt0 */
+#define IRQ_IXP23XX_SWINT1 14 /* S/W Interrupt1 */
+#define IRQ_IXP23XX_UART2 15 /* UART1 Interrupt */
+#define IRQ_IXP23XX_UART1 16 /* UART0 Interrupt */
+#define IRQ_IXP23XX_XSI_PMU_ROLLOVER 17 /* AHB Performance M. Unit counter rollover */
+#define IRQ_IXP23XX_XSI_AHB_PM0 18 /* intr_pm_o */
+#define IRQ_IXP23XX_XSI_AHB_ECE0 19 /* intr_ece_o */
+#define IRQ_IXP23XX_XSI_AHB_GASKET 20 /* gas_intr_o */
+#define IRQ_IXP23XX_XSI_CPP 21 /* xsi2cpp_int */
+#define IRQ_IXP23XX_CPP_XSI 22 /* cpp2xsi_int */
+#define IRQ_IXP23XX_ME_ATTN0 23 /* ME_ATTN */
+#define IRQ_IXP23XX_ME_ATTN1 24 /* ME_ATTN */
+#define IRQ_IXP23XX_ME_ATTN2 25 /* ME_ATTN */
+#define IRQ_IXP23XX_ME_ATTN3 26 /* ME_ATTN */
+#define IRQ_IXP23XX_PCI_ERR_RPH 27 /* PCXG_PCI_ERR_RPH */
+#define IRQ_IXP23XX_D0XG_ECC_CORR 28 /* D0XG_DRAM_ECC_CORR */
+#define IRQ_IXP23XX_D0XG_ECC_UNCORR 29 /* D0XG_DRAM_ECC_UNCORR */
+#define IRQ_IXP23XX_SRAM_ERR1 30 /* SRAM1_ERR */
+#define IRQ_IXP23XX_SRAM_ERR0 31 /* SRAM0_ERR */
+#define IRQ_IXP23XX_MEDIA_ERR 32 /* MEDIA_ERR */
+#define IRQ_IXP23XX_STH_DRAM_ECC_MAJ 33 /* STH_DRAM0_ECC_MAJ */
+#define IRQ_IXP23XX_GPIO6 34 /* GPIO0 interrupts */
+#define IRQ_IXP23XX_GPIO7 35 /* GPIO1 interrupts */
+#define IRQ_IXP23XX_GPIO8 36 /* GPIO2 interrupts */
+#define IRQ_IXP23XX_GPIO9 37 /* GPIO3 interrupts */
+#define IRQ_IXP23XX_GPIO10 38 /* GPIO4 interrupts */
+#define IRQ_IXP23XX_GPIO11 39 /* GPIO5 interrupts */
+#define IRQ_IXP23XX_GPIO12 40 /* GPIO6 interrupts */
+#define IRQ_IXP23XX_GPIO13 41 /* GPIO7 interrupts */
+#define IRQ_IXP23XX_GPIO14 42 /* GPIO8 interrupts */
+#define IRQ_IXP23XX_GPIO15 43 /* GPIO9 interrupts */
+#define IRQ_IXP23XX_SHAC_RING0 44 /* SHAC Ring Full */
+#define IRQ_IXP23XX_SHAC_RING1 45 /* SHAC Ring Full */
+#define IRQ_IXP23XX_SHAC_RING2 46 /* SHAC Ring Full */
+#define IRQ_IXP23XX_SHAC_RING3 47 /* SHAC Ring Full */
+#define IRQ_IXP23XX_SHAC_RING4 48 /* SHAC Ring Full */
+#define IRQ_IXP23XX_SHAC_RING5 49 /* SHAC Ring Full */
+#define IRQ_IXP23XX_SHAC_RING6 50 /* SHAC RING Full */
+#define IRQ_IXP23XX_SHAC_RING7 51 /* SHAC Ring Full */
+#define IRQ_IXP23XX_SHAC_RING8 52 /* SHAC Ring Full */
+#define IRQ_IXP23XX_SHAC_RING9 53 /* SHAC Ring Full */
+#define IRQ_IXP23XX_SHAC_RING10 54 /* SHAC Ring Full */
+#define IRQ_IXP23XX_SHAC_RING11 55 /* SHAC Ring Full */
+#define IRQ_IXP23XX_ME_THREAD_A0_ME0 56 /* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A1_ME0 57 /* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A2_ME0 58 /* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A3_ME0 59 /* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A4_ME0 60 /* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A5_ME0 61 /* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A6_ME0 62 /* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A7_ME0 63 /* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A8_ME1 64 /* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A9_ME1 65 /* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A10_ME1 66 /* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A11_ME1 67 /* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A12_ME1 68 /* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A13_ME1 69 /* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A14_ME1 70 /* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A15_ME1 71 /* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A16_ME2 72 /* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A17_ME2 73 /* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A18_ME2 74 /* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A19_ME2 75 /* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A20_ME2 76 /* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A21_ME2 77 /* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A22_ME2 78 /* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A23_ME2 79 /* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A24_ME3 80 /* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A25_ME3 81 /* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A26_ME3 82 /* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A27_ME3 83 /* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A28_ME3 84 /* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A29_ME3 85 /* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A30_ME3 86 /* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A31_ME3 87 /* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_B0_ME0 88 /* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B1_ME0 89 /* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B2_ME0 90 /* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B3_ME0 91 /* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B4_ME0 92 /* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B5_ME0 93 /* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B6_ME0 94 /* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B7_ME0 95 /* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B8_ME1 96 /* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B9_ME1 97 /* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B10_ME1 98 /* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B11_ME1 99 /* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B12_ME1 100 /* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B13_ME1 101 /* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B14_ME1 102 /* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B15_ME1 103 /* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B16_ME2 104 /* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B17_ME2 105 /* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B18_ME2 106 /* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B19_ME2 107 /* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B20_ME2 108 /* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B21_ME2 109 /* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B22_ME2 110 /* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B23_ME2 111 /* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B24_ME3 112 /* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B25_ME3 113 /* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B26_ME3 114 /* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B27_ME3 115 /* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B28_ME3 116 /* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B29_ME3 117 /* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B30_ME3 118 /* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B31_ME3 119 /* ME_THREAD_B */
+
+#define NUM_IXP23XX_RAW_IRQS 120
+
+#define IRQ_IXP23XX_INTA 120 /* Indirect pcxg_pci_int_rph */
+#define IRQ_IXP23XX_INTB 121 /* Indirect pcxg_pci_int_rph */
+
+#define NR_IXP23XX_IRQ (IRQ_IXP23XX_INTB + 1)
+
+/*
+ * We default to 32 per-board IRQs. Increase this number if you need
+ * more, but keep it realistic.
+ */
+#define NR_IXP23XX_MACH_IRQS 32
+
+#define NR_IRQS NR_IXP23XX_IRQS + NR_IXP23XX_MACH_IRQS
+
+#define IXP23XX_MACH_IRQ(irq) (NR_IXP23XX_IRQ + (irq))
+
+
+/*
+ * IXDP2351-specific interrupts
+ */
+
+/*
+ * External PCI interrupts signaled through INTB
+ *
+ */
+#define IXDP2351_INTB_IRQ_BASE 0
+#define IRQ_IXDP2351_INTA_82546 IXP23XX_MACH_IRQ(0)
+#define IRQ_IXDP2351_INTB_82546 IXP23XX_MACH_IRQ(1)
+#define IRQ_IXDP2351_SPCI_DB_0 IXP23XX_MACH_IRQ(2)
+#define IRQ_IXDP2351_SPCI_DB_1 IXP23XX_MACH_IRQ(3)
+#define IRQ_IXDP2351_SPCI_PMC_INTA IXP23XX_MACH_IRQ(4)
+#define IRQ_IXDP2351_SPCI_PMC_INTB IXP23XX_MACH_IRQ(5)
+#define IRQ_IXDP2351_SPCI_PMC_INTC IXP23XX_MACH_IRQ(6)
+#define IRQ_IXDP2351_SPCI_PMC_INTD IXP23XX_MACH_IRQ(7)
+#define IRQ_IXDP2351_SPCI_FIC IXP23XX_MACH_IRQ(8)
+
+#define IXDP2351_INTB_IRQ_BIT(irq) (irq - IXP23XX_MACH_IRQ(0))
+#define IXDP2351_INTB_IRQ_MASK(irq) (1 << IXDP2351_INTB_IRQ_BIT(irq))
+#define IXDP2351_INTB_IRQ_VALID 0x01FF
+#define IXDP2351_INTB_IRQ_NUM 16
+
+/*
+ * Other external interrupts signaled through INTA
+ */
+#define IXDP2351_INTA_IRQ_BASE 16
+#define IRQ_IXDP2351_IPMI_FROM IXP23XX_MACH_IRQ(16)
+#define IRQ_IXDP2351_125US IXP23XX_MACH_IRQ(17)
+#define IRQ_IXDP2351_DB_0_ADD IXP23XX_MACH_IRQ(18)
+#define IRQ_IXDP2351_DB_1_ADD IXP23XX_MACH_IRQ(19)
+#define IRQ_IXDP2351_DEBUG1 IXP23XX_MACH_IRQ(20)
+#define IRQ_IXDP2351_ADD_UART IXP23XX_MACH_IRQ(21)
+#define IRQ_IXDP2351_FIC_ADD IXP23XX_MACH_IRQ(24)
+#define IRQ_IXDP2351_CS8900 IXP23XX_MACH_IRQ(25)
+#define IRQ_IXDP2351_BBSRAM IXP23XX_MACH_IRQ(26)
+#define IRQ_IXDP2351_CONFIG_MEDIA IXP23XX_MACH_IRQ(27)
+#define IRQ_IXDP2351_CLOCK_REF IXP23XX_MACH_IRQ(28)
+#define IRQ_IXDP2351_A10_NP IXP23XX_MACH_IRQ(29)
+#define IRQ_IXDP2351_A11_NP IXP23XX_MACH_IRQ(30)
+#define IRQ_IXDP2351_DEBUG_NP IXP23XX_MACH_IRQ(31)
+
+#define IXDP2351_INTA_IRQ_BIT(irq) (irq - IXP23XX_MACH_IRQ(16))
+#define IXDP2351_INTA_IRQ_MASK(irq) (1 << IXDP2351_INTA_IRQ_BIT(irq))
+#define IXDP2351_INTA_IRQ_VALID 0xFF3F
+#define IXDP2351_INTA_IRQ_NUM 16
+
+
+/*
+ * ADI RoadRunner IRQs
+ */
+#define IRQ_ROADRUNNER_PCI_INTA IRQ_IXP23XX_INTA
+#define IRQ_ROADRUNNER_PCI_INTB IRQ_IXP23XX_INTB
+#define IRQ_ROADRUNNER_PCI_INTC IRQ_IXP23XX_GPIO11
+#define IRQ_ROADRUNNER_PCI_INTD IRQ_IXP23XX_GPIO12
+
+/*
+ * Put new board definitions here
+ */
+
+
+#endif
--- /dev/null
+/*
+ * include/asm-arm/arch-ixp23xx/ixdp2351.h
+ *
+ * Register and other defines for IXDP2351
+ *
+ * Copyright (c) 2002-2004 Intel Corp.
+ * Copytight (c) 2005 MontaVista Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#ifndef __ASM_ARCH_IXDP2351_H
+#define __ASM_ARCH_IXDP2351_H
+
+/*
+ * NP module memory map
+ */
+#define IXDP2351_NP_PHYS_BASE (IXP23XX_EXP_BUS_CS4_BASE)
+#define IXDP2351_NP_PHYS_SIZE 0x00100000
+#define IXDP2351_NP_VIRT_BASE 0xeff00000
+
+#define IXDP2351_VIRT_CS8900_BASE (IXDP2351_NP_VIRT_BASE)
+#define IXDP2351_VIRT_CS8900_END (IXDP2351_VIRT_CS8900_BASE + 16)
+
+#define IXDP2351_VIRT_NP_CPLD_BASE (IXP23XX_EXP_BUS_CS4_BASE_VIRT + 0x00010000)
+
+#define IXDP2351_NP_CPLD_REG(reg) ((volatile u16 *)(IXDP2351_VIRT_NP_CPLD_BASE + reg))
+
+#define IXDP2351_NP_CPLD_RESET1_REG IXDP2351_NP_CPLD_REG(0x00)
+#define IXDP2351_NP_CPLD_LED_REG IXDP2351_NP_CPLD_REG(0x02)
+#define IXDP2351_NP_CPLD_VERSION_REG IXDP2351_NP_CPLD_REG(0x04)
+
+/*
+ * Base board module memory map
+ */
+
+#define IXDP2351_BB_BASE_PHYS (IXP23XX_EXP_BUS_CS5_BASE)
+#define IXDP2351_BB_SIZE 0x01000000
+#define IXDP2351_BB_BASE_VIRT (0xee000000)
+
+#define IXDP2351_BB_AREA_BASE(offset) (IXDP2351_BB_BASE_VIRT + offset)
+
+#define IXDP2351_VIRT_NVRAM_BASE IXDP2351_BB_AREA_BASE(0x0)
+#define IXDP2351_NVRAM_SIZE (0x20000)
+
+#define IXDP2351_VIRT_MB_IXF1104_BASE IXDP3251_BB_AREA_BASE(0x00020000)
+#define IXDP2351_VIRT_ADD_UART_BASE IXDP2351_BB_AREA_BASE(0x000240C0)
+#define IXDP2351_VIRT_FIC_BASE IXDP2351_BB_AREA_BASE(0x00200000)
+#define IXDP2351_VIRT_DB0_BASE IXDP2351_BB_AREA_BASE(0x00400000)
+#define IXDP2351_VIRT_DB1_BASE IXDP2351_BB_AREA_BASE(0x00600000)
+#define IXDP2351_VIRT_CPLD_BASE IXDP2351_BB_AREA_BASE(0x00024000)
+
+/*
+ * On board CPLD registers
+ */
+#define IXDP2351_CPLD_BB_REG(reg) ((volatile u16 *)(IXDP2351_VIRT_CPLD_BASE + reg))
+
+#define IXDP2351_CPLD_RESET0_REG IXDP2351_CPLD_BB_REG(0x00)
+#define IXDP2351_CPLD_RESET1_REG IXDP2351_CPLD_BB_REG(0x04)
+
+#define IXDP2351_CPLD_RESET1_MAGIC 0x55AA
+#define IXDP2351_CPLD_RESET1_ENABLE 0x8000
+
+#define IXDP2351_CPLD_FPGA_CONFIG_REG IXDP2351_CPLD_BB_REG(0x08)
+#define IXDP2351_CPLD_INTB_MASK_SET_REG IXDP2351_CPLD_BB_REG(0x10)
+#define IXDP2351_CPLD_INTA_MASK_SET_REG IXDP2351_CPLD_BB_REG(0x14)
+#define IXDP2351_CPLD_INTB_STAT_REG IXDP2351_CPLD_BB_REG(0x18)
+#define IXDP2351_CPLD_INTA_STAT_REG IXDP2351_CPLD_BB_REG(0x1C)
+#define IXDP2351_CPLD_INTB_RAW_REG IXDP2351_CPLD_BB_REG(0x20) /* read */
+#define IXDP2351_CPLD_INTA_RAW_REG IXDP2351_CPLD_BB_REG(0x24) /* read */
+#define IXDP2351_CPLD_INTB_MASK_CLR_REG IXDP2351_CPLD_INTB_RAW_REG /* write */
+#define IXDP2351_CPLD_INTA_MASK_CLR_REG IXDP2351_CPLD_INTA_RAW_REG /* write */
+#define IXDP2351_CPLD_INTB_SIM_REG IXDP2351_CPLD_BB_REG(0x28)
+#define IXDP2351_CPLD_INTA_SIM_REG IXDP2351_CPLD_BB_REG(0x2C)
+ /* Interrupt bits are defined in irqs.h */
+#define IXDP2351_CPLD_BB_GBE0_REG IXDP2351_CPLD_BB_REG(0x30)
+#define IXDP2351_CPLD_BB_GBE1_REG IXDP2351_CPLD_BB_REG(0x34)
+
+/* #define IXDP2351_CPLD_BB_MISC_REG IXDP2351_CPLD_REG(0x1C) */
+/* #define IXDP2351_CPLD_BB_MISC_REV_MASK 0xFF */
+/* #define IXDP2351_CPLD_BB_GDXCS0_REG IXDP2351_CPLD_REG(0x24) */
+/* #define IXDP2351_CPLD_BB_GDXCS1_REG IXDP2351_CPLD_REG(0x28) */
+/* #define IXDP2351_CPLD_BB_CLOCK_REG IXDP2351_CPLD_REG(0x04) */
+
+
+#endif
--- /dev/null
+/*
+ * include/asm-arm/arch-ixp23xx/ixp23xx.h
+ *
+ * Register definitions for IXP23XX
+ *
+ * Copyright (C) 2003-2005 Intel Corporation.
+ * Copyright (C) 2005 MontaVista Software, Inc.
+ *
+ * Maintainer: Deepak Saxena <dsaxena@plexity.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __ASM_ARCH_IXP23XX_H
+#define __ASM_ARCH_IXP23XX_H
+
+/*
+ * IXP2300 linux memory map:
+ *
+ * virt phys size
+ * fffd0000 a0000000 64K XSI2CPP_CSR
+ * fffc0000 c4000000 4K EXP_CFG
+ * fff00000 c8000000 64K PERIPHERAL
+ * fe000000 1c0000000 16M CAP_CSR
+ * fd000000 1c8000000 16M MSF_CSR
+ * fb000000 16M ---
+ * fa000000 1d8000000 32M PCI_IO
+ * f8000000 1da000000 32M PCI_CFG
+ * f6000000 1de000000 32M PCI_CREG
+ * f4000000 32M ---
+ * f0000000 1e0000000 64M PCI_MEM
+ * e[c-f]000000 per-platform mappings
+ */
+
+
+/****************************************************************************
+ * Static mappings.
+ ****************************************************************************/
+#define IXP23XX_XSI2CPP_CSR_PHYS 0xa0000000
+#define IXP23XX_XSI2CPP_CSR_VIRT 0xfffd0000
+#define IXP23XX_XSI2CPP_CSR_SIZE 0x00010000
+
+#define IXP23XX_EXP_CFG_PHYS 0xc4000000
+#define IXP23XX_EXP_CFG_VIRT 0xfffc0000
+#define IXP23XX_EXP_CFG_SIZE 0x00001000
+
+#define IXP23XX_PERIPHERAL_PHYS 0xc8000000
+#define IXP23XX_PERIPHERAL_VIRT 0xfff00000
+#define IXP23XX_PERIPHERAL_SIZE 0x00010000
+
+#define IXP23XX_CAP_CSR_PHYS 0x1c0000000ULL
+#define IXP23XX_CAP_CSR_VIRT 0xfe000000
+#define IXP23XX_CAP_CSR_SIZE 0x01000000
+
+#define IXP23XX_MSF_CSR_PHYS 0x1c8000000ULL
+#define IXP23XX_MSF_CSR_VIRT 0xfd000000
+#define IXP23XX_MSF_CSR_SIZE 0x01000000
+
+#define IXP23XX_PCI_IO_PHYS 0x1d8000000ULL
+#define IXP23XX_PCI_IO_VIRT 0xfa000000
+#define IXP23XX_PCI_IO_SIZE 0x02000000
+
+#define IXP23XX_PCI_CFG_PHYS 0x1da000000ULL
+#define IXP23XX_PCI_CFG_VIRT 0xf8000000
+#define IXP23XX_PCI_CFG_SIZE 0x02000000
+#define IXP23XX_PCI_CFG0_VIRT IXP23XX_PCI_CFG_VIRT
+#define IXP23XX_PCI_CFG1_VIRT (IXP23XX_PCI_CFG_VIRT + 0x01000000)
+
+#define IXP23XX_PCI_CREG_PHYS 0x1de000000ULL
+#define IXP23XX_PCI_CREG_VIRT 0xf6000000
+#define IXP23XX_PCI_CREG_SIZE 0x02000000
+#define IXP23XX_PCI_CSR_VIRT (IXP23XX_PCI_CREG_VIRT + 0x01000000)
+
+#define IXP23XX_PCI_MEM_START 0xe0000000
+#define IXP23XX_PCI_MEM_PHYS 0x1e0000000ULL
+#define IXP23XX_PCI_MEM_VIRT 0xf0000000
+#define IXP23XX_PCI_MEM_SIZE 0x04000000
+
+
+/****************************************************************************
+ * XSI2CPP CSRs.
+ ****************************************************************************/
+#define IXP23XX_XSI2CPP_REG(x) ((volatile unsigned long *)(IXP23XX_XSI2CPP_CSR_VIRT + (x)))
+#define IXP23XX_CPP2XSI_CURR_XFER_REG3 IXP23XX_XSI2CPP_REG(0xf8)
+#define IXP23XX_CPP2XSI_ADDR_31 (1 << 19)
+#define IXP23XX_CPP2XSI_PSH_OFF (1 << 20)
+#define IXP23XX_CPP2XSI_COH_OFF (1 << 21)
+
+
+/****************************************************************************
+ * Expansion Bus Config.
+ ****************************************************************************/
+#define IXP23XX_EXP_CFG_REG(x) ((volatile unsigned long *)(IXP23XX_EXP_CFG_VIRT + (x)))
+#define IXP23XX_EXP_CS0 IXP23XX_EXP_CFG_REG(0x00)
+#define IXP23XX_EXP_CS1 IXP23XX_EXP_CFG_REG(0x04)
+#define IXP23XX_EXP_CS2 IXP23XX_EXP_CFG_REG(0x08)
+#define IXP23XX_EXP_CS3 IXP23XX_EXP_CFG_REG(0x0c)
+#define IXP23XX_EXP_CS4 IXP23XX_EXP_CFG_REG(0x10)
+#define IXP23XX_EXP_CS5 IXP23XX_EXP_CFG_REG(0x14)
+#define IXP23XX_EXP_CS6 IXP23XX_EXP_CFG_REG(0x18)
+#define IXP23XX_EXP_CS7 IXP23XX_EXP_CFG_REG(0x1c)
+#define IXP23XX_FLASH_WRITABLE (0x2)
+#define IXP23XX_FLASH_BUS8 (0x1)
+
+#define IXP23XX_EXP_CFG0 IXP23XX_EXP_CFG_REG(0x20)
+#define IXP23XX_EXP_CFG1 IXP23XX_EXP_CFG_REG(0x24)
+#define IXP23XX_EXP_CFG0_MEM_MAP (1 << 31)
+#define IXP23XX_EXP_CFG0_XSCALE_SPEED_SEL (3 << 22)
+#define IXP23XX_EXP_CFG0_XSCALE_SPEED_EN (1 << 21)
+#define IXP23XX_EXP_CFG0_CPP_SPEED_SEL (3 << 19)
+#define IXP23XX_EXP_CFG0_CPP_SPEED_EN (1 << 18)
+#define IXP23XX_EXP_CFG0_PCI_SWIN (3 << 16)
+#define IXP23XX_EXP_CFG0_PCI_DWIN (3 << 14)
+#define IXP23XX_EXP_CFG0_PCI33_MODE (1 << 13)
+#define IXP23XX_EXP_CFG0_QDR_SPEED_SEL (1 << 12)
+#define IXP23XX_EXP_CFG0_CPP_DIV_SEL (1 << 5)
+#define IXP23XX_EXP_CFG0_XSI_NOT_PRES (1 << 4)
+#define IXP23XX_EXP_CFG0_PROM_BOOT (1 << 3)
+#define IXP23XX_EXP_CFG0_PCI_ARB (1 << 2)
+#define IXP23XX_EXP_CFG0_PCI_HOST (1 << 1)
+#define IXP23XX_EXP_CFG0_FLASH_WIDTH (1 << 0)
+
+#define IXP23XX_EXP_UNIT_FUSE IXP23XX_EXP_CFG_REG(0x28)
+#define IXP23XX_EXP_MSF_MUX IXP23XX_EXP_CFG_REG(0x30)
+
+#define IXP23XX_EXP_BUS_PHYS 0x90000000
+#define IXP23XX_EXP_BUS_WINDOW_SIZE 0x01000000
+
+#define IXP23XX_EXP_BUS_CS0_BASE (IXP23XX_EXP_BUS_PHYS + 0x00000000)
+#define IXP23XX_EXP_BUS_CS1_BASE (IXP23XX_EXP_BUS_PHYS + 0x01000000)
+#define IXP23XX_EXP_BUS_CS2_BASE (IXP23XX_EXP_BUS_PHYS + 0x02000000)
+#define IXP23XX_EXP_BUS_CS3_BASE (IXP23XX_EXP_BUS_PHYS + 0x03000000)
+#define IXP23XX_EXP_BUS_CS4_BASE (IXP23XX_EXP_BUS_PHYS + 0x04000000)
+#define IXP23XX_EXP_BUS_CS5_BASE (IXP23XX_EXP_BUS_PHYS + 0x05000000)
+#define IXP23XX_EXP_BUS_CS6_BASE (IXP23XX_EXP_BUS_PHYS + 0x06000000)
+#define IXP23XX_EXP_BUS_CS7_BASE (IXP23XX_EXP_BUS_PHYS + 0x07000000)
+
+
+/****************************************************************************
+ * Peripherals.
+ ****************************************************************************/
+#define IXP23XX_UART1_VIRT (IXP23XX_PERIPHERAL_VIRT + 0x0000)
+#define IXP23XX_UART2_VIRT (IXP23XX_PERIPHERAL_VIRT + 0x1000)
+#define IXP23XX_PMU_VIRT (IXP23XX_PERIPHERAL_VIRT + 0x2000)
+#define IXP23XX_INTC_VIRT (IXP23XX_PERIPHERAL_VIRT + 0x3000)
+#define IXP23XX_GPIO_VIRT (IXP23XX_PERIPHERAL_VIRT + 0x4000)
+#define IXP23XX_TIMER_VIRT (IXP23XX_PERIPHERAL_VIRT + 0x5000)
+#define IXP23XX_NPE0_VIRT (IXP23XX_PERIPHERAL_VIRT + 0x6000)
+#define IXP23XX_DSR_VIRT (IXP23XX_PERIPHERAL_VIRT + 0x7000)
+#define IXP23XX_NPE1_VIRT (IXP23XX_PERIPHERAL_VIRT + 0x8000)
+#define IXP23XX_ETH0_VIRT (IXP23XX_PERIPHERAL_VIRT + 0x9000)
+#define IXP23XX_ETH1_VIRT (IXP23XX_PERIPHERAL_VIRT + 0xA000)
+#define IXP23XX_GIG0_VIRT (IXP23XX_PERIPHERAL_VIRT + 0xB000)
+#define IXP23XX_GIG1_VIRT (IXP23XX_PERIPHERAL_VIRT + 0xC000)
+#define IXP23XX_DDRS_VIRT (IXP23XX_PERIPHERAL_VIRT + 0xD000)
+
+#define IXP23XX_UART1_PHYS (IXP23XX_PERIPHERAL_PHYS + 0x0000)
+#define IXP23XX_UART2_PHYS (IXP23XX_PERIPHERAL_PHYS + 0x1000)
+#define IXP23XX_PMU_PHYS (IXP23XX_PERIPHERAL_PHYS + 0x2000)
+#define IXP23XX_INTC_PHYS (IXP23XX_PERIPHERAL_PHYS + 0x3000)
+#define IXP23XX_GPIO_PHYS (IXP23XX_PERIPHERAL_PHYS + 0x4000)
+#define IXP23XX_TIMER_PHYS (IXP23XX_PERIPHERAL_PHYS + 0x5000)
+#define IXP23XX_NPE0_PHYS (IXP23XX_PERIPHERAL_PHYS + 0x6000)
+#define IXP23XX_DSR_PHYS (IXP23XX_PERIPHERAL_PHYS + 0x7000)
+#define IXP23XX_NPE1_PHYS (IXP23XX_PERIPHERAL_PHYS + 0x8000)
+#define IXP23XX_ETH0_PHYS (IXP23XX_PERIPHERAL_PHYS + 0x9000)
+#define IXP23XX_ETH1_PHYS (IXP23XX_PERIPHERAL_PHYS + 0xA000)
+#define IXP23XX_GIG0_PHYS (IXP23XX_PERIPHERAL_PHYS + 0xB000)
+#define IXP23XX_GIG1_PHYS (IXP23XX_PERIPHERAL_PHYS + 0xC000)
+#define IXP23XX_DDRS_PHYS (IXP23XX_PERIPHERAL_PHYS + 0xD000)
+
+
+/****************************************************************************
+ * Interrupt controller.
+ ****************************************************************************/
+#define IXP23XX_INTC_REG(x) ((volatile unsigned long *)(IXP23XX_INTC_VIRT + (x)))
+#define IXP23XX_INTR_ST1 IXP23XX_INTC_REG(0x00)
+#define IXP23XX_INTR_ST2 IXP23XX_INTC_REG(0x04)
+#define IXP23XX_INTR_ST3 IXP23XX_INTC_REG(0x08)
+#define IXP23XX_INTR_ST4 IXP23XX_INTC_REG(0x0c)
+#define IXP23XX_INTR_EN1 IXP23XX_INTC_REG(0x10)
+#define IXP23XX_INTR_EN2 IXP23XX_INTC_REG(0x14)
+#define IXP23XX_INTR_EN3 IXP23XX_INTC_REG(0x18)
+#define IXP23XX_INTR_EN4 IXP23XX_INTC_REG(0x1c)
+#define IXP23XX_INTR_SEL1 IXP23XX_INTC_REG(0x20)
+#define IXP23XX_INTR_SEL2 IXP23XX_INTC_REG(0x24)
+#define IXP23XX_INTR_SEL3 IXP23XX_INTC_REG(0x28)
+#define IXP23XX_INTR_SEL4 IXP23XX_INTC_REG(0x2c)
+#define IXP23XX_INTR_IRQ_ST1 IXP23XX_INTC_REG(0x30)
+#define IXP23XX_INTR_IRQ_ST2 IXP23XX_INTC_REG(0x34)
+#define IXP23XX_INTR_IRQ_ST3 IXP23XX_INTC_REG(0x38)
+#define IXP23XX_INTR_IRQ_ST4 IXP23XX_INTC_REG(0x3c)
+#define IXP23XX_INTR_IRQ_ENC_ST_OFFSET 0x54
+
+
+/****************************************************************************
+ * GPIO.
+ ****************************************************************************/
+#define IXP23XX_GPIO_REG(x) ((volatile unsigned long *)(IXP23XX_GPIO_VIRT + (x)))
+#define IXP23XX_GPIO_GPOUTR IXP23XX_GPIO_REG(0x00)
+#define IXP23XX_GPIO_GPOER IXP23XX_GPIO_REG(0x04)
+#define IXP23XX_GPIO_GPINR IXP23XX_GPIO_REG(0x08)
+#define IXP23XX_GPIO_GPISR IXP23XX_GPIO_REG(0x0c)
+#define IXP23XX_GPIO_GPIT1R IXP23XX_GPIO_REG(0x10)
+#define IXP23XX_GPIO_GPIT2R IXP23XX_GPIO_REG(0x14)
+#define IXP23XX_GPIO_GPCLKR IXP23XX_GPIO_REG(0x18)
+#define IXP23XX_GPIO_GPDBSELR IXP23XX_GPIO_REG(0x1c)
+
+#define IXP23XX_GPIO_STYLE_MASK 0x7
+#define IXP23XX_GPIO_STYLE_ACTIVE_HIGH 0x0
+#define IXP23XX_GPIO_STYLE_ACTIVE_LOW 0x1
+#define IXP23XX_GPIO_STYLE_RISING_EDGE 0x2
+#define IXP23XX_GPIO_STYLE_FALLING_EDGE 0x3
+#define IXP23XX_GPIO_STYLE_TRANSITIONAL 0x4
+
+#define IXP23XX_GPIO_STYLE_SIZE 3
+
+
+/****************************************************************************
+ * Timer.
+ ****************************************************************************/
+#define IXP23XX_TIMER_REG(x) ((volatile unsigned long *)(IXP23XX_TIMER_VIRT + (x)))
+#define IXP23XX_TIMER_CONT IXP23XX_TIMER_REG(0x00)
+#define IXP23XX_TIMER1_TIMESTAMP IXP23XX_TIMER_REG(0x04)
+#define IXP23XX_TIMER1_RELOAD IXP23XX_TIMER_REG(0x08)
+#define IXP23XX_TIMER2_TIMESTAMP IXP23XX_TIMER_REG(0x0c)
+#define IXP23XX_TIMER2_RELOAD IXP23XX_TIMER_REG(0x10)
+#define IXP23XX_TIMER_WDOG IXP23XX_TIMER_REG(0x14)
+#define IXP23XX_TIMER_WDOG_EN IXP23XX_TIMER_REG(0x18)
+#define IXP23XX_TIMER_WDOG_KEY IXP23XX_TIMER_REG(0x1c)
+#define IXP23XX_TIMER_WDOG_KEY_MAGIC 0x482e
+#define IXP23XX_TIMER_STATUS IXP23XX_TIMER_REG(0x20)
+#define IXP23XX_TIMER_SOFT_RESET IXP23XX_TIMER_REG(0x24)
+#define IXP23XX_TIMER_SOFT_RESET_EN IXP23XX_TIMER_REG(0x28)
+
+#define IXP23XX_TIMER_ENABLE (1 << 0)
+#define IXP23XX_TIMER_ONE_SHOT (1 << 1)
+/* Low order bits of reload value ignored */
+#define IXP23XX_TIMER_RELOAD_MASK (0x3)
+#define IXP23XX_TIMER_DISABLED (0x0)
+#define IXP23XX_TIMER1_INT_PEND (1 << 0)
+#define IXP23XX_TIMER2_INT_PEND (1 << 1)
+#define IXP23XX_TIMER_STATUS_TS_PEND (1 << 2)
+#define IXP23XX_TIMER_STATUS_WDOG_PEND (1 << 3)
+#define IXP23XX_TIMER_STATUS_WARM_RESET (1 << 4)
+
+
+/****************************************************************************
+ * CAP CSRs.
+ ****************************************************************************/
+#define IXP23XX_GLOBAL_REG(x) ((volatile unsigned long *)(IXP23XX_CAP_CSR_VIRT + 0x4a00 + (x)))
+#define IXP23XX_PROD_IDG IXP23XX_GLOBAL_REG(0x00)
+#define IXP23XX_MISC_CONTROL IXP23XX_GLOBAL_REG(0x04)
+#define IXP23XX_MSF_CLK_CNTRL IXP23XX_GLOBAL_REG(0x08)
+#define IXP23XX_RESET0 IXP23XX_GLOBAL_REG(0x0c)
+#define IXP23XX_RESET1 IXP23XX_GLOBAL_REG(0x10)
+#define IXP23XX_STRAP_OPTIONS IXP23XX_GLOBAL_REG(0x18)
+
+#define IXP23XX_ENABLE_WATCHDOG (1 << 24)
+#define IXP23XX_SHPC_INIT_COMP (1 << 21)
+#define IXP23XX_RST_ALL (1 << 16)
+#define IXP23XX_RESET_PCI (1 << 2)
+#define IXP23XX_PCI_UNIT_RESET (1 << 1)
+#define IXP23XX_XSCALE_RESET (1 << 0)
+
+
+/****************************************************************************
+ * PCI CSRs.
+ ****************************************************************************/
+#define IXP23XX_PCI_CREG(x) ((volatile unsigned long *)(IXP23XX_PCI_CREG_VIRT + (x)))
+#define IXP23XX_PCI_CMDSTAT IXP23XX_PCI_CREG(0x04)
+#define IXP23XX_PCI_SRAM_BAR IXP23XX_PCI_CREG(0x14)
+#define IXP23XX_PCI_SDRAM_BAR IXP23XX_PCI_CREG(0x18)
+
+
+#define IXP23XX_PCI_CSR(x) ((volatile unsigned long *)(IXP23XX_PCI_CREG_VIRT + 0x01000000 + (x)))
+#define IXP23XX_PCI_OUT_INT_STATUS IXP23XX_PCI_CSR(0x0030)
+#define IXP23XX_PCI_OUT_INT_MASK IXP23XX_PCI_CSR(0x0034)
+#define IXP23XX_PCI_SRAM_BASE_ADDR_MASK IXP23XX_PCI_CSR(0x00fc)
+#define IXP23XX_PCI_DRAM_BASE_ADDR_MASK IXP23XX_PCI_CSR(0x0100)
+#define IXP23XX_PCI_CONTROL IXP23XX_PCI_CSR(0x013c)
+#define IXP23XX_PCI_ADDR_EXT IXP23XX_PCI_CSR(0x0140)
+#define IXP23XX_PCI_ME_PUSH_STATUS IXP23XX_PCI_CSR(0x0148)
+#define IXP23XX_PCI_ME_PUSH_EN IXP23XX_PCI_CSR(0x014c)
+#define IXP23XX_PCI_ERR_STATUS IXP23XX_PCI_CSR(0x0150)
+#define IXP23XX_PCI_ERROR_STATUS IXP23XX_PCI_CSR(0x0150)
+#define IXP23XX_PCI_ERR_ENABLE IXP23XX_PCI_CSR(0x0154)
+#define IXP23XX_PCI_XSCALE_INT_STATUS IXP23XX_PCI_CSR(0x0158)
+#define IXP23XX_PCI_XSCALE_INT_ENABLE IXP23XX_PCI_CSR(0x015c)
+#define IXP23XX_PCI_CPP_ADDR_BITS IXP23XX_PCI_CSR(0x0160)
+
+
+#ifndef __ASSEMBLY__
+/*
+ * Is system memory on the XSI or CPP bus?
+ */
+static inline unsigned ixp23xx_cpp_boot(void)
+{
+ return (*IXP23XX_EXP_CFG0 & IXP23XX_EXP_CFG0_XSI_NOT_PRES);
+}
+#endif
+
+
+#endif
--- /dev/null
+/*
+ * include/asm-arm/arch-ixp23xx/memory.h
+ *
+ * Copyright (c) 2003-2004 Intel Corp.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#ifndef __ASM_ARCH_MEMORY_H
+#define __ASM_ARCH_MEMORY_H
+
+#include <asm/hardware.h>
+
+/*
+ * Physical DRAM offset.
+ */
+#define PHYS_OFFSET (0x00000000)
+
+
+/*
+ * Virtual view <-> DMA view memory address translations
+ * virt_to_bus: Used to translate the virtual address to an
+ * address suitable to be passed to set_dma_addr
+ * bus_to_virt: Used to convert an address for DMA operations
+ * to an address that the kernel can use.
+ */
+#ifndef __ASSEMBLY__
+
+#define __virt_to_bus(v) \
+ ({ unsigned int ret; \
+ ret = ((__virt_to_phys(v) - 0x00000000) + \
+ (*((volatile int *)IXP23XX_PCI_SDRAM_BAR) & 0xfffffff0)); \
+ ret; })
+
+#define __bus_to_virt(b) \
+ ({ unsigned int data; \
+ data = *((volatile int *)IXP23XX_PCI_SDRAM_BAR); \
+ __phys_to_virt((((b - (data & 0xfffffff0)) + 0x00000000))); })
+
+#endif
+
+
+#endif
--- /dev/null
+/*
+ * include/asm-arm/arch-ixp23xx/platform.h
+ *
+ * Various bits of code used by platform-level code.
+ *
+ * Author: Deepak Saxena <dsaxena@plexity.net>
+ *
+ * Copyright 2005 (c) MontaVista Software, Inc.
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#ifndef __ASSEMBLY__
+
+struct pci_sys_data;
+
+void ixp23xx_map_io(void);
+void ixp23xx_init_irq(void);
+void ixp23xx_sys_init(void);
+int ixp23xx_pci_setup(int, struct pci_sys_data *);
+void ixp23xx_pci_preinit(void);
+struct pci_bus *ixp23xx_pci_scan_bus(int, struct pci_sys_data*);
+
+extern struct sys_timer ixp23xx_timer;
+
+#define IXP23XX_UART_XTAL 14745600
+
+
+#endif
--- /dev/null
+/*
+ * include/asm-arm/arch-ixp23xx/system.h
+ *
+ * Copyright (C) 2003 Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <asm/hardware.h>
+#include <asm/mach-types.h>
+
+static inline void arch_idle(void)
+{
+#if 0
+ if (!hlt_counter)
+ cpu_do_idle();
+#endif
+}
+
+static inline void arch_reset(char mode)
+{
+ /* First try machine specific support */
+ if (machine_is_ixdp2351()) {
+ *IXDP2351_CPLD_RESET1_REG = IXDP2351_CPLD_RESET1_MAGIC;
+ (void) *IXDP2351_CPLD_RESET1_REG;
+ *IXDP2351_CPLD_RESET1_REG = IXDP2351_CPLD_RESET1_ENABLE;
+ }
+
+ /* Use on-chip reset capability */
+ *IXP23XX_RESET0 |= IXP23XX_RST_ALL;
+}
--- /dev/null
+/*
+ * include/asm-arm/arch-ixp23xx/time.h
+ */
--- /dev/null
+/*
+ * include/asm-arm/arch-ixp23xx/timex.h
+ *
+ * XScale architecture timex specifications
+ */
+
+#define CLOCK_TICK_RATE 75000000
--- /dev/null
+/*
+ * include/asm-arm/arch-ixp23xx/uncompress.h
+ *
+ * Copyright (C) 2002-2004 Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __ASM_ARCH_UNCOMPRESS_H
+#define __ASM_ARCH_UNCOMPRESS_H
+
+#include <asm/hardware.h>
+#include <linux/serial_reg.h>
+
+#define UART_BASE ((volatile u32 *)IXP23XX_UART1_PHYS)
+
+static __inline__ void putc(char c)
+{
+ int j;
+
+ for (j = 0; j < 0x1000; j++) {
+ if (UART_BASE[UART_LSR] & UART_LSR_THRE)
+ break;
+ }
+
+ UART_BASE[UART_TX] = c;
+}
+
+static void putstr(const char *s)
+{
+ while (*s) {
+ putc(*s);
+ if (*s == '\n')
+ putc('\r');
+ s++;
+ }
+}
+
+#define arch_decomp_setup()
+#define arch_decomp_wdog()
+
+
+#endif
--- /dev/null
+/*
+ * include/asm-arm/arch-ixp23xx/vmalloc.h
+ *
+ * Copyright (c) 2005 MontaVista Software, Inc.
+ *
+ * NPU mappings end at 0xf0000000 and we allocate 64MB for board
+ * specific static I/O.
+ */
+
+#define VMALLOC_END (0xec000000)
static volatile u32* uart_base;
-static __inline__ void putc(char c)
+static inline void putc(int c)
{
/* Check THRE and TEMT bits before we transmit the character.
*/
- while ((uart_base[UART_LSR] & TX_DONE) != TX_DONE);
+ while ((uart_base[UART_LSR] & TX_DONE) != TX_DONE)
+ barrier();
+
*uart_base = c;
}
-/*
- * This does not append a newline
- */
-static void putstr(const char *s)
+static void flush(void)
{
- while (*s)
- {
- putc(*s);
- if (*s == '\n')
- putc('\r');
- s++;
- }
}
static __inline__ void __arch_decomp_setup(unsigned long arch_id)
#define __raw_writeb(v,p) (*(volatile unsigned char *)(p) = (v))
#define __raw_readb(p) (*(volatile unsigned char *)(p))
-static __inline__ void putc(char c)
+static inline void putc(int c)
{
while(__raw_readb(IO_UART + 0x18) & 0x20 ||
- __raw_readb(IO_UART + 0x18) & 0x08);
+ __raw_readb(IO_UART + 0x18) & 0x08)
+ barrier();
+
__raw_writeb(c, IO_UART + 0x00);
}
-static void putstr(const char *s)
+static inline void flush(void)
{
- while (*s) {
- if (*s == 10) { /* If a LF, add CR */
- putc(10);
- putc(13);
- }
- putc(*(s++));
- }
}
static __inline__ void arch_decomp_setup(void)
#define UART_STATUS (*(volatile unsigned long*) (UART2_PHYS + UART_R_STATUS))
#define UART_DATA (*(volatile unsigned long*) (UART2_PHYS + UART_R_DATA))
-static __inline__ void putc (char ch)
+static inline void putc(int ch)
{
while (UART_STATUS & nTxRdy)
- ;
+ barrier();
UART_DATA = ch;
}
-static void putstr (const char* sz)
+static inline void flush(void)
{
- for (; *sz; ++sz) {
- putc (*sz);
- if (*sz == '\n')
- putc ('\r');
- }
}
/* NULL functions; we don't presently need them */
#define check_port(base, shift) ((base[UART_OMAP_MDR1 << shift] & 7) == 0)
#define omap_get_id() ((*(volatile unsigned int *)(0xfffed404)) >> 12) & ID_MASK
-static void
-putstr(const char *s)
+static void putc(int c)
{
volatile u8 * uart = 0;
int shift = 2;
/*
* Now, xmit each character
*/
- while (*s) {
- while (!(uart[UART_LSR << shift] & UART_LSR_THRE))
- barrier();
- uart[UART_TX << shift] = *s;
- if (*s++ == '\n') {
- while (!(uart[UART_LSR << shift] & UART_LSR_THRE))
- barrier();
- uart[UART_TX << shift] = '\r';
- }
- }
+ while (!(uart[UART_LSR << shift] & UART_LSR_THRE))
+ barrier();
+ uart[UART_TX << shift] = c;
+}
+
+static inline void flush(void)
+{
}
/*
#elif defined(CONFIG_SHARP_LOCOMO)
#define NR_IRQS (IRQ_LOCOMO_SPI_TEND + 1)
#elif defined(CONFIG_ARCH_LUBBOCK) || \
+ defined(CONFIG_MACH_LOGICPD_PXA270) || \
defined(CONFIG_MACH_MAINSTONE)
#define NR_IRQS (IRQ_BOARD_END)
#else
#define LUBBOCK_USB_DISC_IRQ LUBBOCK_IRQ(6) /* usb disconnect */
#define LUBBOCK_LAST_IRQ LUBBOCK_IRQ(6)
+#define LPD270_IRQ(x) (IRQ_BOARD_START + (x))
+#define LPD270_USBC_IRQ LPD270_IRQ(2)
+#define LPD270_ETHERNET_IRQ LPD270_IRQ(3)
+#define LPD270_AC97_IRQ LPD270_IRQ(4)
+
#define MAINSTONE_IRQ(x) (IRQ_BOARD_START + (x))
#define MAINSTONE_MMC_IRQ MAINSTONE_IRQ(0)
#define MAINSTONE_USIM_IRQ MAINSTONE_IRQ(1)
--- /dev/null
+/*
+ * include/asm-arm/arch-pxa/lpd270.h
+ *
+ * Author: Lennert Buytenhek
+ * Created: Feb 10, 2006
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __ASM_ARCH_LPD270_H
+#define __ASM_ARCH_LPD270_H
+
+#define LPD270_CPLD_PHYS PXA_CS2_PHYS
+#define LPD270_CPLD_VIRT 0xf0000000
+#define LPD270_CPLD_SIZE 0x00100000
+
+#define LPD270_ETH_PHYS (PXA_CS2_PHYS + 0x01000000)
+
+/* CPLD registers */
+#define LPD270_CPLD_REG(x) ((unsigned long)(LPD270_CPLD_VIRT + (x)))
+#define LPD270_CONTROL LPD270_CPLD_REG(0x00)
+#define LPD270_PERIPHERAL0 LPD270_CPLD_REG(0x04)
+#define LPD270_PERIPHERAL1 LPD270_CPLD_REG(0x08)
+#define LPD270_CPLD_REVISION LPD270_CPLD_REG(0x14)
+#define LPD270_EEPROM_SPI_ITF LPD270_CPLD_REG(0x20)
+#define LPD270_MODE_PINS LPD270_CPLD_REG(0x24)
+#define LPD270_EGPIO LPD270_CPLD_REG(0x30)
+#define LPD270_INT_MASK LPD270_CPLD_REG(0x40)
+#define LPD270_INT_STATUS LPD270_CPLD_REG(0x50)
+
+#define LPD270_INT_AC97 (1 << 4) /* AC'97 CODEC IRQ */
+#define LPD270_INT_ETHERNET (1 << 3) /* Ethernet controller IRQ */
+#define LPD270_INT_USBC (1 << 2) /* USB client cable detection IRQ */
+
+
+#endif
#define UART FFUART
-static __inline__ void putc(char c)
+static inline void putc(char c)
{
- while (!(UART[5] & 0x20));
+ while (!(UART[5] & 0x20))
+ barrier();
UART[0] = c;
}
/*
* This does not append a newline
*/
-static void putstr(const char *s)
+static inline void flush(void)
{
- while (*s) {
- putc(*s);
- if (*s == '\n')
- putc('\r');
- s++;
- }
}
/*
/*
* This does not append a newline
*/
-static void putstr(const char *s)
+static inline void putc(int c)
{
- while (*s) {
- while (AMBA_UART_FR & (1 << 5))
- barrier();
-
- AMBA_UART_DR = *s;
+ while (AMBA_UART_FR & (1 << 5))
+ barrier();
- if (*s == '\n') {
- while (AMBA_UART_FR & (1 << 5))
- barrier();
+ AMBA_UART_DR = c;
+}
- AMBA_UART_DR = '\r';
- }
- s++;
- }
+static inline void flush(void)
+{
while (AMBA_UART_FR & (1 << 3))
barrier();
}
/*
* This does not append a newline
*/
-static void putstr(const char *s)
+static void putc(int c)
{
extern void ll_write_char(char *, char c, char white);
int x,y;
- unsigned char c;
char *ptr;
x = params->video_x;
y = params->video_y;
- while ( ( c = *(unsigned char *)s++ ) != '\0' ) {
- if ( c == '\n' ) {
+ if (c == '\n') {
+ if (++y >= video_num_lines)
+ y--;
+ } else if (c == '\r') {
+ x = 0;
+ } else {
+ ptr = VIDMEM + ((y*video_num_columns*params->bytes_per_char_v+x)*bytes_per_char_h);
+ ll_write_char(ptr, c, white);
+ if (++x >= video_num_columns) {
x = 0;
if ( ++y >= video_num_lines ) {
y--;
}
- } else {
- ptr = VIDMEM + ((y*video_num_columns*params->bytes_per_char_v+x)*bytes_per_char_h);
- ll_write_char(ptr, c, white);
- if ( ++x >= video_num_columns ) {
- x = 0;
- if ( ++y >= video_num_lines ) {
- y--;
- }
- }
}
}
params->video_y = y;
}
+static inline void flush(void)
+{
+}
+
static void error(char *x);
/*
* waiting for tx to happen...
*/
-static void
-putc(char ch)
+static void putc(int ch)
{
int cpuid = S3C2410_GSTATUS1_2410;
cpuid &= S3C2410_GSTATUS1_IDMASK;
#endif
- if (ch == '\n')
- putc('\r'); /* expand newline to \r\n */
-
if (uart_rd(S3C2410_UFCON) & S3C2410_UFCON_FIFOMODE) {
int level;
} else {
/* not using fifos */
- while ((uart_rd(S3C2410_UTRSTAT) & S3C2410_UTRSTAT_TXE) != S3C2410_UTRSTAT_TXE);
+ while ((uart_rd(S3C2410_UTRSTAT) & S3C2410_UTRSTAT_TXE) != S3C2410_UTRSTAT_TXE)
+ barrier();
}
/* write byte to transmission register */
uart_wr(S3C2410_UTXH, ch);
}
-static void
-putstr(const char *ptr)
+static inline void flush(void)
{
- for (; *ptr != '\0'; ptr++) {
- putc(*ptr);
- }
}
#define __raw_writel(d,ad) do { *((volatile unsigned int *)(ad)) = (d); } while(0)
#define UART(x) (*(volatile unsigned long *)(serial_port + (x)))
-static void putstr( const char *s )
+static void putc(int c)
{
unsigned long serial_port;
return;
} while (0);
- for (; *s; s++) {
- /* wait for space in the UART's transmitter */
- while (!(UART(UTSR1) & UTSR1_TNF));
+ /* wait for space in the UART's transmitter */
+ while (!(UART(UTSR1) & UTSR1_TNF))
+ barrier();
- /* send the character out. */
- UART(UTDR) = *s;
+ /* send the character out. */
+ UART(UTDR) = c;
+}
- /* if a LF, also do CR... */
- if (*s == 10) {
- while (!(UART(UTSR1) & UTSR1_TNF));
- UART(UTDR) = 13;
- }
- }
+static inline void flush(void)
+{
}
/*
#define SERIAL_BASE ((volatile unsigned char *)0x400003f8)
-static __inline__ void putc(char c)
+static inline void putc(int c)
{
int t;
while (t--);
}
-/*
- * This does not append a newline
- */
-static void putstr(const char *s)
+static inline void flush(void)
{
- while (*s) {
- putc(*s);
- if (*s == '\n')
- putc('\r');
- s++;
- }
}
#ifdef DEBUG
/*
* This does not append a newline
*/
-static void putstr(const char *s)
+static inline void putc(int c)
{
- while (*s) {
- while (AMBA_UART_FR & (1 << 5))
- barrier();
-
- AMBA_UART_DR = *s;
+ while (AMBA_UART_FR & (1 << 5))
+ barrier();
- if (*s == '\n') {
- while (AMBA_UART_FR & (1 << 5))
- barrier();
+ AMBA_UART_DR = c;
+}
- AMBA_UART_DR = '\r';
- }
- s++;
- }
+static inline void flush(void)
+{
while (AMBA_UART_FR & (1 << 3))
barrier();
}
# endif
#endif
+#if defined(CONFIG_CPU_XSC3)
+# ifdef _CACHE
+# define MULTI_CACHE 1
+# else
+# define _CACHE xsc3
+# endif
+#endif
+
#if defined(CONFIG_CPU_V6)
//# ifdef _CACHE
# define MULTI_CACHE 1
* DOMAIN_IO - domain 2 includes all IO only
* DOMAIN_USER - domain 1 includes all user memory only
* DOMAIN_KERNEL - domain 0 includes all kernel memory only
+ *
+ * The domain numbering depends on whether we support 36 physical
+ * address for I/O or not. Addresses above the 32 bit boundary can
+ * only be mapped using supersections and supersections can only
+ * be set for domain 0. We could just default to DOMAIN_IO as zero,
+ * but there may be systems with supersection support and no 36-bit
+ * addressing. In such cases, we want to map system memory with
+ * supersections to reduce TLB misses and footprint.
+ *
+ * 36-bit addressing and supersections are only available on
+ * CPUs based on ARMv6+ or the Intel XSC3 core.
*/
+#ifndef CONFIG_IO_36
#define DOMAIN_KERNEL 0
#define DOMAIN_TABLE 0
#define DOMAIN_USER 1
#define DOMAIN_IO 2
+#else
+#define DOMAIN_KERNEL 2
+#define DOMAIN_TABLE 2
+#define DOMAIN_USER 1
+#define DOMAIN_IO 0
+#endif
/*
* Domain types
* virt_addr_valid(k) indicates whether a virtual address is valid
*/
#ifndef CONFIG_DISCONTIGMEM
-
-#define page_to_pfn(page) (((page) - mem_map) + PHYS_PFN_OFFSET)
-#define pfn_to_page(pfn) ((mem_map + (pfn)) - PHYS_PFN_OFFSET)
+#define ARCH_PFN_OFFSET (PHYS_PFN_OFFSET)
#define pfn_valid(pfn) ((pfn) >= PHYS_PFN_OFFSET && (pfn) < (PHYS_PFN_OFFSET + max_mapnr))
#define virt_to_page(kaddr) (pfn_to_page(__pa(kaddr) >> PAGE_SHIFT))
* around in memory.
*/
#include <linux/numa.h>
-
-#define page_to_pfn(page) \
- (( (page) - page_zone(page)->zone_mem_map) \
- + page_zone(page)->zone_start_pfn)
-
-#define pfn_to_page(pfn) \
- (PFN_TO_MAPBASE(pfn) + LOCAL_MAP_NR((pfn) << PAGE_SHIFT))
+#define arch_pfn_to_nid(pfn) (PFN_TO_NID(pfn))
+#define arch_local_page_offset(pfn, nid) (LOCAL_MAP_NR((pfn) << PAGE_OFFSET))
#define pfn_valid(pfn) \
({ \
#endif
+#include <asm-generic/memory_model.h>
+
#endif
* v4wb - ARMv4 with writeback cache, without minicache
* v4_mc - ARMv4 with minicache
* xscale - Xscale
+ * xsc3 - XScalev3
*/
#undef _USER
#undef MULTI_USER
# endif
#endif
+#ifdef CONFIG_CPU_XSC3
+# ifdef _USER
+# define MULTI_USER 1
+# else
+# define _USER xsc3_mc
+# endif
+#endif
+
#ifdef CONFIG_CPU_COPY_V6
# define MULTI_USER 1
#endif
# define CPU_NAME cpu_xscale
# endif
# endif
+# ifdef CONFIG_CPU_XSC3
+# ifdef CPU_NAME
+# undef MULTI_CPU
+# define MULTI_CPU
+# else
+# define CPU_NAME cpu_xsc3
+# endif
+# endif
# ifdef CONFIG_CPU_V6
# ifdef CPU_NAME
# undef MULTI_CPU
int (*proc)(char *buf);
};
-void rtc_time_to_tm(unsigned long, struct rtc_time *);
-int rtc_tm_to_time(struct rtc_time *, unsigned long *);
-int rtc_valid_tm(struct rtc_time *);
void rtc_next_alarm_time(struct rtc_time *, struct rtc_time *, struct rtc_time *);
void rtc_update(unsigned long, unsigned long);
int register_rtc(struct rtc_ops *);
extern int cpu_architecture(void);
extern void cpu_init(void);
+/*
+ * Intel's XScale3 core supports some v6 features (supersections, L2)
+ * but advertises itself as v5 as it does not support the v6 ISA. For
+ * this reason, we need a way to explicitly test for this type of CPU.
+ */
+#ifndef CONFIG_CPU_XSC3
+#define cpu_is_xsc3() 0
+#else
+static inline int cpu_is_xsc3(void)
+{
+ extern unsigned int processor_id;
+
+ if ((processor_id & 0xffffe000) == 0x69056000)
+ return 1;
+
+ return 0;
+}
+#endif
+
#define set_cr(x) \
__asm__ __volatile__( \
"mcr p15, 0, %0, c1, c0, 0 @ set CR" \
* virt_to_page(k) convert a _valid_ virtual address to struct page *
* virt_addr_valid(k) indicates whether a virtual address is valid
*/
-#define page_to_pfn(page) (((page) - mem_map) + PHYS_PFN_OFFSET)
-#define pfn_to_page(pfn) ((mem_map + (pfn)) - PHYS_PFN_OFFSET)
+#define ARCH_PFN_OFFSET (PHYS_PFN_OFFSET)
#define pfn_valid(pfn) ((pfn) >= PHYS_PFN_OFFSET && (pfn) < (PHYS_PFN_OFFSET + max_mapnr))
#define virt_to_page(kaddr) (pfn_to_page(__pa(kaddr) >> PAGE_SHIFT))
*/
#define page_to_bus(page) (page_address(page))
+#include <asm-generic/memory_model.h>
#endif
/* On CRIS the PFN numbers doesn't start at 0 so we have to compensate */
/* for that before indexing into the page table starting at mem_map */
-#define pfn_to_page(pfn) (mem_map + ((pfn) - (PAGE_OFFSET >> PAGE_SHIFT)))
-#define page_to_pfn(page) ((unsigned long)((page) - mem_map) + (PAGE_OFFSET >> PAGE_SHIFT))
+#define ARCH_PFN_OFFSET (PAGE_OFFSET >> PAGE_SHIFT)
#define pfn_valid(pfn) (((pfn) - (PAGE_OFFSET >> PAGE_SHIFT)) < max_mapnr)
/* to index into the page map. our pages all start at physical addr PAGE_OFFSET so
#endif /* __KERNEL__ */
+#include <asm-generic/memory_model.h>
#include <asm-generic/page.h>
#endif /* _CRIS_PAGE_H */
extern int futex_atomic_op_inuser(int encoded_op, int __user *uaddr);
+static inline int
+futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval, int newval)
+{
+ return -ENOSYS;
+}
+
#endif
#endif
extern unsigned long max_pfn;
#ifdef CONFIG_MMU
-#define pfn_to_page(pfn) (mem_map + (pfn))
-#define page_to_pfn(page) ((unsigned long) ((page) - mem_map))
#define pfn_valid(pfn) ((pfn) < max_mapnr)
-
#else
-#define pfn_to_page(pfn) (&mem_map[(pfn) - (PAGE_OFFSET >> PAGE_SHIFT)])
-#define page_to_pfn(page) ((PAGE_OFFSET >> PAGE_SHIFT) + (unsigned long) ((page) - mem_map))
+#define ARCH_PFN_OFFSET (PAGE_OFFSET >> PAGE_SHIFT)
#define pfn_valid(pfn) ((pfn) >= min_low_pfn && (pfn) < max_low_pfn)
#endif
#define WANT_PAGE_VIRTUAL 1
#endif
+#include <asm-generic/memory_model.h>
#include <asm-generic/page.h>
#endif /* _ASM_PAGE_H */
return ret;
}
+static inline int
+futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval, int newval)
+{
+ return -ENOSYS;
+}
+
#endif
#endif
#include <linux/config.h>
#include <linux/percpu.h>
#include <linux/hardirq.h>
+#include <asm/atomic.h>
#include <asm/types.h>
/* An unsigned long type for operations which are atomic for a single
* CPU. Usually used in combination with per-cpu variables. */
-#if BITS_PER_LONG == 32
/* Implement in terms of atomics. */
/* Don't use typedef: don't want them to be mixed with atomic_t's. */
typedef struct
{
- atomic_t a;
+ atomic_long_t a;
} local_t;
-#define LOCAL_INIT(i) { ATOMIC_INIT(i) }
+#define LOCAL_INIT(i) { ATOMIC_LONG_INIT(i) }
-#define local_read(l) ((unsigned long)atomic_read(&(l)->a))
-#define local_set(l,i) atomic_set((&(l)->a),(i))
-#define local_inc(l) atomic_inc(&(l)->a)
-#define local_dec(l) atomic_dec(&(l)->a)
-#define local_add(i,l) atomic_add((i),(&(l)->a))
-#define local_sub(i,l) atomic_sub((i),(&(l)->a))
+#define local_read(l) ((unsigned long)atomic_long_read(&(l)->a))
+#define local_set(l,i) atomic_long_set((&(l)->a),(i))
+#define local_inc(l) atomic_long_inc(&(l)->a)
+#define local_dec(l) atomic_long_dec(&(l)->a)
+#define local_add(i,l) atomic_long_add((i),(&(l)->a))
+#define local_sub(i,l) atomic_long_sub((i),(&(l)->a))
/* Non-atomic variants, ie. preemption disabled and won't be touched
* in interrupt, etc. Some archs can optimize this case well. */
#define __local_add(i,l) local_set((l), local_read(l) + (i))
#define __local_sub(i,l) local_set((l), local_read(l) - (i))
-#else /* ... can't use atomics. */
-/* Implement in terms of three variables.
- Another option would be to use local_irq_save/restore. */
-
-typedef struct
-{
- /* 0 = in hardirq, 1 = in softirq, 2 = usermode. */
- unsigned long v[3];
-} local_t;
-
-#define _LOCAL_VAR(l) ((l)->v[!in_interrupt() + !in_irq()])
-
-#define LOCAL_INIT(i) { { (i), 0, 0 } }
-
-static inline unsigned long local_read(local_t *l)
-{
- return l->v[0] + l->v[1] + l->v[2];
-}
-
-static inline void local_set(local_t *l, unsigned long v)
-{
- l->v[0] = v;
- l->v[1] = l->v[2] = 0;
-}
-
-static inline void local_inc(local_t *l)
-{
- preempt_disable();
- _LOCAL_VAR(l)++;
- preempt_enable();
-}
-
-static inline void local_dec(local_t *l)
-{
- preempt_disable();
- _LOCAL_VAR(l)--;
- preempt_enable();
-}
-
-static inline void local_add(unsigned long v, local_t *l)
-{
- preempt_disable();
- _LOCAL_VAR(l) += v;
- preempt_enable();
-}
-
-static inline void local_sub(unsigned long v, local_t *l)
-{
- preempt_disable();
- _LOCAL_VAR(l) -= v;
- preempt_enable();
-}
-
-/* Non-atomic variants, ie. preemption disabled and won't be touched
- * in interrupt, etc. Some archs can optimize this case well. */
-#define __local_inc(l) ((l)->v[0]++)
-#define __local_dec(l) ((l)->v[0]--)
-#define __local_add(i,l) ((l)->v[0] += (i))
-#define __local_sub(i,l) ((l)->v[0] -= (i))
-
-#endif /* Non-atomic implementation */
-
/* Use these for per-cpu local_t variables: on some archs they are
* much more efficient than these naive implementations. Note they take
* a variable (eg. mystruct.foo), not an address.
--- /dev/null
+#ifndef __ASM_MEMORY_MODEL_H
+#define __ASM_MEMORY_MODEL_H
+
+#ifdef __KERNEL__
+#ifndef __ASSEMBLY__
+
+#if defined(CONFIG_FLATMEM)
+
+#ifndef ARCH_PFN_OFFSET
+#define ARCH_PFN_OFFSET (0UL)
+#endif
+
+#elif defined(CONFIG_DISCONTIGMEM)
+
+#ifndef arch_pfn_to_nid
+#define arch_pfn_to_nid(pfn) pfn_to_nid(pfn)
+#endif
+
+#ifndef arch_local_page_offset
+#define arch_local_page_offset(pfn, nid) \
+ ((pfn) - NODE_DATA(nid)->node_start_pfn)
+#endif
+
+#endif /* CONFIG_DISCONTIGMEM */
+
+#ifdef CONFIG_OUT_OF_LINE_PFN_TO_PAGE
+struct page;
+/* this is useful when inlined pfn_to_page is too big */
+extern struct page *pfn_to_page(unsigned long pfn);
+extern unsigned long page_to_pfn(struct page *page);
+#else
+/*
+ * supports 3 memory models.
+ */
+#if defined(CONFIG_FLATMEM)
+
+#define pfn_to_page(pfn) (mem_map + ((pfn) - ARCH_PFN_OFFSET))
+#define page_to_pfn(page) ((unsigned long)((page) - mem_map) + \
+ ARCH_PFN_OFFSET)
+#elif defined(CONFIG_DISCONTIGMEM)
+
+#define pfn_to_page(pfn) \
+({ unsigned long __pfn = (pfn); \
+ unsigned long __nid = arch_pfn_to_nid(pfn); \
+ NODE_DATA(__nid)->node_mem_map + arch_local_page_offset(__pfn, __nid);\
+})
+
+#define page_to_pfn(pg) \
+({ struct page *__pg = (pg); \
+ struct pglist_data *__pgdat = NODE_DATA(page_to_nid(__pg)); \
+ (unsigned long)(__pg - __pgdat->node_mem_map) + \
+ __pgdat->node_start_pfn; \
+})
+
+#elif defined(CONFIG_SPARSEMEM)
+/*
+ * Note: section's mem_map is encorded to reflect its start_pfn.
+ * section[i].section_mem_map == mem_map's address - start_pfn;
+ */
+#define page_to_pfn(pg) \
+({ struct page *__pg = (pg); \
+ int __sec = page_to_section(__pg); \
+ __pg - __section_mem_map_addr(__nr_to_section(__sec)); \
+})
+
+#define pfn_to_page(pfn) \
+({ unsigned long __pfn = (pfn); \
+ struct mem_section *__sec = __pfn_to_section(__pfn); \
+ __section_mem_map_addr(__sec) + __pfn; \
+})
+#endif /* CONFIG_FLATMEM/DISCONTIGMEM/SPARSEMEM */
+#endif /* CONFIG_OUT_OF_LINE_PFN_TO_PAGE */
+
+#endif /* __ASSEMBLY__ */
+#endif /* __KERNEL__ */
+
+#endif
#define percpu_modcopy(pcpudst, src, size) \
do { \
unsigned int __i; \
- for_each_cpu(__i) \
+ for_each_possible_cpu(__i) \
memcpy((pcpudst)+__per_cpu_offset[__i], \
(src), (size)); \
} while (0)
#define page_to_virt(page) ((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET)
#define pfn_valid(page) (page < max_mapnr)
-#define pfn_to_page(pfn) virt_to_page(pfn_to_virt(pfn))
-#define page_to_pfn(page) virt_to_pfn(page_to_virt(page))
+#define ARCH_PFN_OFFSET (PAGE_OFFSET >> PAGE_SHIFT)
#define virt_addr_valid(kaddr) (((void *)(kaddr) >= (void *)PAGE_OFFSET) && \
((void *)(kaddr) < (void *)memory_end))
#endif /* __KERNEL__ */
+#include <asm-generic/memory_model.h>
#include <asm-generic/page.h>
#endif /* _H8300_PAGE_H */
return ret;
}
+static inline int
+futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval, int newval)
+{
+ if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int)))
+ return -EFAULT;
+
+ __asm__ __volatile__(
+ "1: " LOCK_PREFIX "cmpxchgl %3, %1 \n"
+
+ "2: .section .fixup, \"ax\" \n"
+ "3: mov %2, %0 \n"
+ " jmp 2b \n"
+ " .previous \n"
+
+ " .section __ex_table, \"a\" \n"
+ " .align 8 \n"
+ " .long 1b,3b \n"
+ " .previous \n"
+
+ : "=a" (oldval), "=m" (*uaddr)
+ : "i" (-EFAULT), "r" (newval), "0" (oldval)
+ : "memory"
+ );
+
+ return oldval;
+}
+
#endif
#endif
int signr;
};
-/* Note - you should never unregister because that can race with NMIs.
- If you really want to do it first unregister - then synchronize_sched - then free.
- */
-int register_die_notifier(struct notifier_block *nb);
-extern struct notifier_block *i386die_chain;
+extern int register_die_notifier(struct notifier_block *);
+extern int unregister_die_notifier(struct notifier_block *);
+extern struct atomic_notifier_head i386die_chain;
/* Grossly misnamed. */
.trapnr = trap,
.signr = sig
};
- return notifier_call_chain(&i386die_chain, val, &args);
+ return atomic_notifier_call_chain(&i386die_chain, val, &args);
}
#endif
static inline unsigned long mach_get_cmos_time(void)
{
unsigned int year, mon, day, hour, min, sec;
- int i;
- /* The Linux interpretation of the CMOS clock register contents:
- * When the Update-In-Progress (UIP) flag goes from 1 to 0, the
- * RTC registers show the second which has precisely just started.
- * Let's hope other operating systems interpret the RTC the same way.
- */
- /* read RTC exactly on falling edge of update flag */
- for (i = 0 ; i < 1000000 ; i++) /* may take up to 1 second... */
- if (CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP)
- break;
- for (i = 0 ; i < 1000000 ; i++) /* must try at least 2.228 ms */
- if (!(CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP))
- break;
- do { /* Isn't this overkill ? UIP above should guarantee consistency */
+ do {
sec = CMOS_READ(RTC_SECONDS);
min = CMOS_READ(RTC_MINUTES);
hour = CMOS_READ(RTC_HOURS);
mon = CMOS_READ(RTC_MONTH);
year = CMOS_READ(RTC_YEAR);
} while (sec != CMOS_READ(RTC_SECONDS));
- if (!(CMOS_READ(RTC_CONTROL) & RTC_DM_BINARY) || RTC_ALWAYS_BCD)
- {
- BCD_TO_BIN(sec);
- BCD_TO_BIN(min);
- BCD_TO_BIN(hour);
- BCD_TO_BIN(day);
- BCD_TO_BIN(mon);
- BCD_TO_BIN(year);
- }
- if ((year += 1900) < 1970)
+
+ if (!(CMOS_READ(RTC_CONTROL) & RTC_DM_BINARY) || RTC_ALWAYS_BCD) {
+ BCD_TO_BIN(sec);
+ BCD_TO_BIN(min);
+ BCD_TO_BIN(hour);
+ BCD_TO_BIN(day);
+ BCD_TO_BIN(mon);
+ BCD_TO_BIN(year);
+ }
+
+ year += 1900;
+ if (year < 1970)
year += 100;
return mktime(year, mon, day, hour, min, sec);
#endif
}
-#define node_localnr(pfn, nid) ((pfn) - node_data[nid]->node_start_pfn)
-
/*
* Following are macros that each numa implmentation must define.
*/
/* XXX: FIXME -- wli */
#define kern_addr_valid(kaddr) (0)
-#define pfn_to_page(pfn) \
-({ \
- unsigned long __pfn = pfn; \
- int __node = pfn_to_nid(__pfn); \
- &NODE_DATA(__node)->node_mem_map[node_localnr(__pfn,__node)]; \
-})
-
-#define page_to_pfn(pg) \
-({ \
- struct page *__page = pg; \
- struct zone *__zone = page_zone(__page); \
- (unsigned long)(__page - __zone->zone_mem_map) \
- + __zone->zone_start_pfn; \
-})
-
#ifdef CONFIG_X86_NUMAQ /* we have contiguous memory on NUMA-Q */
#define pfn_valid(pfn) ((pfn) < num_physpages)
#else
#define __va(x) ((void *)((unsigned long)(x)+PAGE_OFFSET))
#define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT)
#ifdef CONFIG_FLATMEM
-#define pfn_to_page(pfn) (mem_map + (pfn))
-#define page_to_pfn(page) ((unsigned long)((page) - mem_map))
#define pfn_valid(pfn) ((pfn) < max_mapnr)
#endif /* CONFIG_FLATMEM */
#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
#endif /* __KERNEL__ */
+#include <asm-generic/memory_model.h>
#include <asm-generic/page.h>
#endif /* _I386_PAGE_H */
#include <linux/config.h>
#include <linux/threads.h>
#include <asm/percpu.h>
+#include <linux/cpumask.h>
/* flag for disabling the tsc */
extern int tsc_disable;
char pad0;
int x86_power;
unsigned long loops_per_jiffy;
+#ifdef CONFIG_SMP
+ cpumask_t llc_shared_map; /* cpus sharing the last level cache */
+#endif
unsigned char x86_max_cores; /* cpuid returned max cores value */
unsigned char booted_cores; /* number of cores as seen by OS */
unsigned char apicid;
extern int phys_proc_id[NR_CPUS];
extern int cpu_core_id[NR_CPUS];
+extern int cpu_llc_id[NR_CPUS];
extern char ignore_fpu_irq;
extern void identify_cpu(struct cpuinfo_x86 *);
unsigned int reserved[3];
struct extended_signature sigs[0];
};
-/* '6' because it used to be for P6 only (but now covers Pentium 4 as well) */
-#define MICROCODE_IOCFREE _IO('6',0)
/* REP NOP (PAUSE) is a good thing to insert into busy-wait loops. */
static inline void rep_nop(void)
#ifndef _i386_SETUP_H
#define _i386_SETUP_H
-#define PFN_UP(x) (((x) + PAGE_SIZE-1) >> PAGE_SHIFT)
-#define PFN_DOWN(x) ((x) >> PAGE_SHIFT)
-#define PFN_PHYS(x) ((x) << PAGE_SHIFT)
+#include <linux/pfn.h>
/*
* Reserved space for vmalloc and iomap - defined in asm/page.h
#endif /* CONFIG_NUMA */
+extern cpumask_t cpu_coregroup_map(int cpu);
+
#endif /* _ASM_I386_TOPOLOGY_H */
#define __NR_pselect6 308
#define __NR_ppoll 309
#define __NR_unshare 310
+#define __NR_set_robust_list 311
+#define __NR_get_robust_list 312
-#define NR_syscalls 311
+#define NR_syscalls 313
/*
* user-visible error numbers are in the range -1 - -128: see
return (void __user *) (unsigned long) uptr;
}
+static inline compat_uptr_t
+ptr_to_compat(void __user *uptr)
+{
+ return (u32)(unsigned long)uptr;
+}
+
static __inline__ void __user *
compat_alloc_user_space (long len)
{
extern int register_die_notifier(struct notifier_block *);
extern int unregister_die_notifier(struct notifier_block *);
-extern struct notifier_block *ia64die_chain;
+extern struct atomic_notifier_head ia64die_chain;
enum die_val {
DIE_BREAK = 1,
.signr = sig
};
- return notifier_call_chain(&ia64die_chain, val, &args);
+ return atomic_notifier_call_chain(&ia64die_chain, val, &args);
}
#endif
# define ia64_pfn_valid(pfn) 1
#endif
+#ifdef CONFIG_VIRTUAL_MEM_MAP
+extern struct page *vmem_map;
+#ifdef CONFIG_DISCONTIGMEM
+# define page_to_pfn(page) ((unsigned long) (page - vmem_map))
+# define pfn_to_page(pfn) (vmem_map + (pfn))
+#endif
+#endif
+
+#if defined(CONFIG_FLATMEM) || defined(CONFIG_SPARSEMEM)
+/* FLATMEM always configures mem_map (mem_map = vmem_map if necessary) */
+#include <asm-generic/memory_model.h>
+#endif
+
#ifdef CONFIG_FLATMEM
# define pfn_valid(pfn) (((pfn) < max_mapnr) && ia64_pfn_valid(pfn))
-# define page_to_pfn(page) ((unsigned long) (page - mem_map))
-# define pfn_to_page(pfn) (mem_map + (pfn))
#elif defined(CONFIG_DISCONTIGMEM)
-extern struct page *vmem_map;
extern unsigned long min_low_pfn;
extern unsigned long max_low_pfn;
# define pfn_valid(pfn) (((pfn) >= min_low_pfn) && ((pfn) < max_low_pfn) && ia64_pfn_valid(pfn))
-# define page_to_pfn(page) ((unsigned long) (page - vmem_map))
-# define pfn_to_page(pfn) (vmem_map + (pfn))
#endif
#define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT)
__pgdat->node_start_pfn + __pgdat->node_spanned_pages - 1; \
})
-#define pfn_to_page(pfn) \
-({ \
- unsigned long __pfn = pfn; \
- int __node = pfn_to_nid(__pfn); \
- &NODE_DATA(__node)->node_mem_map[node_localnr(__pfn,__node)]; \
-})
-
-#define page_to_pfn(pg) \
-({ \
- struct page *__page = pg; \
- struct zone *__zone = page_zone(__page); \
- (unsigned long)(__page - __zone->zone_mem_map) \
- + __zone->zone_start_pfn; \
-})
#define pmd_page(pmd) (pfn_to_page(pmd_val(pmd) >> PAGE_SHIFT))
/*
* pfn_valid should be made as fast as possible, and the current definition
#ifndef CONFIG_DISCONTIGMEM
#define PFN_BASE (CONFIG_MEMORY_START >> PAGE_SHIFT)
-#define pfn_to_page(pfn) (mem_map + ((pfn) - PFN_BASE))
-#define page_to_pfn(page) \
- ((unsigned long)((page) - mem_map) + PFN_BASE)
+#define ARCH_PFN_OFFSET PFN_BASE
#define pfn_valid(pfn) (((pfn) - PFN_BASE) < max_mapnr)
#endif /* !CONFIG_DISCONTIGMEM */
#endif /* __KERNEL__ */
+#include <asm-generic/memory_model.h>
#include <asm-generic/page.h>
#endif /* _ASM_M32R_PAGE_H */
#define RAMDISK_PROMPT_FLAG (0x8000)
#define RAMDISK_LOAD_FLAG (0x4000)
-#define PFN_UP(x) (((x) + PAGE_SIZE-1) >> PAGE_SHIFT)
-#define PFN_DOWN(x) ((x) >> PAGE_SHIFT)
-#define PFN_PHYS(x) ((x) << PAGE_SHIFT)
-
extern unsigned long memory_start;
extern unsigned long memory_end;
return (void __user *)(long)uptr;
}
+static inline compat_uptr_t ptr_to_compat(void __user *uptr)
+{
+ return (u32)(unsigned long)uptr;
+}
+
static inline void __user *compat_alloc_user_space(long len)
{
struct pt_regs *regs = (struct pt_regs *)
return ret;
}
+static inline int
+futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval, int newval)
+{
+ return -ENOSYS;
+}
+
#endif
#endif
return retval;
}
-/*
- * Returns true if a clock update is in progress
- */
-static inline unsigned char rtc_is_updating(void)
-{
- unsigned char uip;
- unsigned long flags;
-
- spin_lock_irqsave(&rtc_lock, flags);
- uip = (CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP);
- spin_unlock_irqrestore(&rtc_lock, flags);
- return uip;
-}
-
static inline unsigned long mc146818_get_cmos_time(void)
{
unsigned int year, mon, day, hour, min, sec;
- int i;
unsigned long flags;
- /*
- * The Linux interpretation of the CMOS clock register contents:
- * When the Update-In-Progress (UIP) flag goes from 1 to 0, the
- * RTC registers show the second which has precisely just started.
- * Let's hope other operating systems interpret the RTC the same way.
- */
-
- /* read RTC exactly on falling edge of update flag */
- for (i = 0 ; i < 1000000 ; i++) /* may take up to 1 second... */
- if (rtc_is_updating())
- break;
- for (i = 0 ; i < 1000000 ; i++) /* must try at least 2.228 ms */
- if (!rtc_is_updating())
- break;
-
spin_lock_irqsave(&rtc_lock, flags);
- do { /* Isn't this overkill ? UIP above should guarantee consistency */
+
+ do {
sec = CMOS_READ(RTC_SECONDS);
min = CMOS_READ(RTC_MINUTES);
hour = CMOS_READ(RTC_HOURS);
NODE_DATA(__n)->node_spanned_pages) : 0);\
})
-#define pfn_to_page(pfn) \
-({ \
- unsigned long __pfn = (pfn); \
- pg_data_t *__pg = NODE_DATA(pfn_to_nid(__pfn)); \
- __pg->node_mem_map + (__pfn - __pg->node_start_pfn); \
-})
-
-#define page_to_pfn(p) \
-({ \
- struct page *__p = (p); \
- struct zone *__z = page_zone(__p); \
- ((__p - __z->zone_mem_map) + __z->zone_start_pfn); \
-})
-
/* XXX: FIXME -- wli */
#define kern_addr_valid(addr) (0)
#define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT)
#ifndef CONFIG_NEED_MULTIPLE_NODES
-#define pfn_to_page(pfn) (mem_map + (pfn))
-#define page_to_pfn(page) ((unsigned long)((page) - mem_map))
#define pfn_valid(pfn) ((pfn) < max_mapnr)
#endif
#define WANT_PAGE_VIRTUAL
#endif
+#include <asm-generic/memory_model.h>
#include <asm-generic/page.h>
#endif /* _ASM_PAGE_H */
#define IVR_SERIAL_PORT_DEFNS
#endif
-#ifdef CONFIG_SERIAL_AU1X00
-#include <asm/mach-au1x00/au1000.h>
-#ifdef CONFIG_SOC_AU1000
-#define AU1000_SERIAL_PORT_DEFNS \
- { .baud_base = 0, .port = UART0_ADDR, \
- .iomem_base = (unsigned char *)UART0_ADDR, \
- .irq = AU1000_UART0_INT, .flags = STD_COM_FLAGS, \
- .iomem_reg_shift = 2 }, \
- { .baud_base = 0, .port = UART1_ADDR, \
- .iomem_base = (unsigned char *)UART1_ADDR, \
- .irq = AU1000_UART1_INT, .flags = STD_COM_FLAGS, \
- .iomem_reg_shift = 2 }, \
- { .baud_base = 0, .port = UART2_ADDR, \
- .iomem_base = (unsigned char *)UART2_ADDR, \
- .irq = AU1000_UART2_INT, .flags = STD_COM_FLAGS, \
- .iomem_reg_shift = 2 }, \
- { .baud_base = 0, .port = UART3_ADDR, \
- .iomem_base = (unsigned char *)UART3_ADDR, \
- .irq = AU1000_UART3_INT, .flags = STD_COM_FLAGS, \
- .iomem_reg_shift = 2 },
-#endif
-
-#ifdef CONFIG_SOC_AU1500
-#define AU1000_SERIAL_PORT_DEFNS \
- { .baud_base = 0, .port = UART0_ADDR, \
- .iomem_base = (unsigned char *)UART0_ADDR, \
- .irq = AU1500_UART0_INT, .flags = STD_COM_FLAGS, \
- .iomem_reg_shift = 2 }, \
- { .baud_base = 0, .port = UART3_ADDR, \
- .iomem_base = (unsigned char *)UART3_ADDR, \
- .irq = AU1500_UART3_INT, .flags = STD_COM_FLAGS, \
- .iomem_reg_shift = 2 },
-#endif
-
-#ifdef CONFIG_SOC_AU1100
-#define AU1000_SERIAL_PORT_DEFNS \
- { .baud_base = 0, .port = UART0_ADDR, \
- .iomem_base = (unsigned char *)UART0_ADDR, \
- .irq = AU1100_UART0_INT, .flags = STD_COM_FLAGS, \
- .iomem_reg_shift = 2 }, \
- { .baud_base = 0, .port = UART1_ADDR, \
- .iomem_base = (unsigned char *)UART1_ADDR, \
- .irq = AU1100_UART1_INT, .flags = STD_COM_FLAGS, \
- .iomem_reg_shift = 2 }, \
- { .baud_base = 0, .port = UART3_ADDR, \
- .iomem_base = (unsigned char *)UART3_ADDR, \
- .irq = AU1100_UART3_INT, .flags = STD_COM_FLAGS, \
- .iomem_reg_shift = 2 },
-#endif
-
-#ifdef CONFIG_SOC_AU1550
-#define AU1000_SERIAL_PORT_DEFNS \
- { .baud_base = 0, .port = UART0_ADDR, \
- .iomem_base = (unsigned char *)UART0_ADDR, \
- .irq = AU1550_UART0_INT, .flags = STD_COM_FLAGS, \
- .iomem_reg_shift = 2 }, \
- { .baud_base = 0, .port = UART1_ADDR, \
- .iomem_base = (unsigned char *)UART1_ADDR, \
- .irq = AU1550_UART1_INT, .flags = STD_COM_FLAGS, \
- .iomem_reg_shift = 2 }, \
- { .baud_base = 0, .port = UART3_ADDR, \
- .iomem_base = (unsigned char *)UART3_ADDR, \
- .irq = AU1550_UART3_INT, .flags = STD_COM_FLAGS,\
- .iomem_reg_shift = 2 },
-#endif
-
-#ifdef CONFIG_SOC_AU1200
-#define AU1000_SERIAL_PORT_DEFNS \
- { .baud_base = 0, .port = UART0_ADDR, \
- .iomem_base = (unsigned char *)UART0_ADDR, \
- .irq = AU1200_UART0_INT, .flags = STD_COM_FLAGS, \
- .iomem_reg_shift = 2 }, \
- { .baud_base = 0, .port = UART1_ADDR, \
- .iomem_base = (unsigned char *)UART1_ADDR, \
- .irq = AU1200_UART1_INT, .flags = STD_COM_FLAGS, \
- .iomem_reg_shift = 2 },
-#endif
-
-#else
-#define AU1000_SERIAL_PORT_DEFNS
-#endif
-
#ifdef CONFIG_HAVE_STD_PC_SERIAL_PORT
#define STD_SERIAL_PORT_DEFNS \
/* UART CLK PORT IRQ FLAGS */ \
MOMENCO_OCELOT_G_SERIAL_PORT_DEFNS \
MOMENCO_OCELOT_C_SERIAL_PORT_DEFNS \
MOMENCO_OCELOT_SERIAL_PORT_DEFNS \
- MOMENCO_OCELOT_3_SERIAL_PORT_DEFNS \
- AU1000_SERIAL_PORT_DEFNS
+ MOMENCO_OCELOT_3_SERIAL_PORT_DEFNS
#endif /* _ASM_SERIAL_H */
/*
* RTC ops. By default, they point to no-RTC functions.
- * rtc_get_time - mktime(year, mon, day, hour, min, sec) in seconds.
- * rtc_set_time - reverse the above translation and set time to RTC.
- * rtc_set_mmss - similar to rtc_set_time, but only min and sec need
+ * rtc_mips_get_time - mktime(year, mon, day, hour, min, sec) in seconds.
+ * rtc_mips_set_time - reverse the above translation and set time to RTC.
+ * rtc_mips_set_mmss - similar to rtc_set_time, but only min and sec need
* to be set. Used by RTC sync-up.
*/
-extern unsigned long (*rtc_get_time)(void);
-extern int (*rtc_set_time)(unsigned long);
-extern int (*rtc_set_mmss)(unsigned long);
+extern unsigned long (*rtc_mips_get_time)(void);
+extern int (*rtc_mips_set_time)(unsigned long);
+extern int (*rtc_mips_set_mmss)(unsigned long);
/*
* Timer interrupt functions.
return (void __user *)(unsigned long)uptr;
}
+static inline compat_uptr_t ptr_to_compat(void __user *uptr)
+{
+ return (u32)(unsigned long)uptr;
+}
+
static __inline__ void __user *compat_alloc_user_space(long len)
{
struct pt_regs *regs = ¤t->thread.regs;
pg_data_t *__pgdat = NODE_DATA(nid); \
__pgdat->node_start_pfn + __pgdat->node_spanned_pages; \
})
-#define node_localnr(pfn, nid) ((pfn) - node_start_pfn(nid))
-
-#define pfn_to_page(pfn) \
-({ \
- unsigned long __pfn = (pfn); \
- int __node = pfn_to_nid(__pfn); \
- &NODE_DATA(__node)->node_mem_map[node_localnr(__pfn,__node)]; \
-})
-
-#define page_to_pfn(pg) \
-({ \
- struct page *__page = pg; \
- struct zone *__zone = page_zone(__page); \
- BUG_ON(__zone == NULL); \
- (unsigned long)(__page - __zone->zone_mem_map) \
- + __zone->zone_start_pfn; \
-})
/* We have these possible memory map layouts:
* Astro: 0-3.75, 67.75-68, 4-64
#define __va(x) ((void *)((unsigned long)(x)+PAGE_OFFSET))
#ifndef CONFIG_DISCONTIGMEM
-#define pfn_to_page(pfn) (mem_map + (pfn))
-#define page_to_pfn(page) ((unsigned long)((page) - mem_map))
#define pfn_valid(pfn) ((pfn) < max_mapnr)
#endif /* CONFIG_DISCONTIGMEM */
#endif /* __KERNEL__ */
+#include <asm-generic/memory_model.h>
#include <asm-generic/page.h>
#endif /* _PARISC_PAGE_H */
unsigned long curr_key;
};
-/* Values for PDC_MODEL_CAPABILITES non-equivalent virtual aliasing support */
+/* Values for PDC_MODEL_CAPABILITIES non-equivalent virtual aliasing support */
#define PDC_MODEL_IOPDIR_FDC (1 << 2) /* see sba_iommu.c */
#define PDC_MODEL_NVA_MASK (3 << 4)
return ret;
}
+static inline int
+futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval, int newval)
+{
+ return -ENOSYS;
+}
+
#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_FUTEX_H */
int signr;
};
-/*
- Note - you should never unregister because that can race with NMIs.
- If you really want to do it first unregister - then synchronize_sched -
- then free.
- */
-int register_die_notifier(struct notifier_block *nb);
-extern struct notifier_block *powerpc_die_chain;
+extern int register_die_notifier(struct notifier_block *);
+extern int unregister_die_notifier(struct notifier_block *);
+extern struct atomic_notifier_head powerpc_die_chain;
/* Grossly misnamed. */
enum die_val {
static inline int notify_die(enum die_val val,char *str,struct pt_regs *regs,long err,int trap, int sig)
{
struct die_args args = { .regs=regs, .str=str, .err=err, .trapnr=trap,.signr=sig };
- return notifier_call_chain(&powerpc_die_chain, val, &args);
+ return atomic_notifier_call_chain(&powerpc_die_chain, val, &args);
}
#endif /* __KERNEL__ */
#endif
#ifdef CONFIG_FLATMEM
-#define pfn_to_page(pfn) (mem_map + (pfn))
-#define page_to_pfn(page) ((unsigned long)((page) - mem_map))
#define pfn_valid(pfn) ((pfn) < max_mapnr)
#endif
struct page *p);
extern int page_is_ram(unsigned long pfn);
+#include <asm-generic/memory_model.h>
#endif /* __ASSEMBLY__ */
#endif /* __KERNEL__ */
#define __pa(x) ___pa((unsigned long)(x))
#define __va(x) ((void *)(___va((unsigned long)(x))))
-#define pfn_to_page(pfn) (mem_map + ((pfn) - PPC_PGSTART))
-#define page_to_pfn(page) ((unsigned long)((page) - mem_map) + PPC_PGSTART)
+#define ARCH_PFN_OFFSET (PPC_PGSTART)
#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
#define page_to_virt(page) __va(page_to_pfn(page) << PAGE_SHIFT)
/* We do define AT_SYSINFO_EHDR but don't use the gate mecanism */
#define __HAVE_ARCH_GATE_AREA 1
+#include <asm-generic/memory_model.h>
#endif /* __KERNEL__ */
#endif /* _PPC_PAGE_H */
return (void __user *)(unsigned long)(uptr & 0x7fffffffUL);
}
+static inline compat_uptr_t ptr_to_compat(void __user *uptr)
+{
+ return (u32)(unsigned long)uptr;
+}
+
static inline void __user *compat_alloc_user_space(long len)
{
unsigned long stack;
#define PAGE_OFFSET 0x0UL
#define __pa(x) (unsigned long)(x)
#define __va(x) (void *)(unsigned long)(x)
-#define pfn_to_page(pfn) (mem_map + (pfn))
-#define page_to_pfn(page) ((unsigned long)((page) - mem_map))
#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
#define pfn_valid(pfn) ((pfn) < max_mapnr)
#endif /* __KERNEL__ */
+#include <asm-generic/memory_model.h>
#include <asm-generic/page.h>
#endif /* _S390_PAGE_H */
#include <asm/cpu/addrspace.h>
-/* Memory segments (32bit Priviledged mode addresses) */
+/* Memory segments (32bit Privileged mode addresses) */
#define P0SEG 0x00000000
#define P1SEG 0x80000000
#define P2SEG 0xa0000000
/* PFN start number, because of __MEMORY_START */
#define PFN_START (__MEMORY_START >> PAGE_SHIFT)
-
-#define pfn_to_page(pfn) (mem_map + (pfn) - PFN_START)
-#define page_to_pfn(page) ((unsigned long)((page) - mem_map) + PFN_START)
+#define ARCH_PFN_OFFSET (FPN_START)
#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
#define pfn_valid(pfn) (((pfn) - PFN_START) < max_mapnr)
#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
#endif /* __KERNEL__ */
+#include <asm-generic/memory_model.h>
#include <asm-generic/page.h>
#endif /* __ASM_SH_PAGE_H */
/* PFN start number, because of __MEMORY_START */
#define PFN_START (__MEMORY_START >> PAGE_SHIFT)
-
-#define pfn_to_page(pfn) (mem_map + (pfn) - PFN_START)
-#define page_to_pfn(page) ((unsigned long)((page) - mem_map) + PFN_START)
+#define ARCH_PFN_OFFSET (PFN_START)
#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
#define pfn_valid(pfn) (((pfn) - PFN_START) < max_mapnr)
#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
#endif /* __KERNEL__ */
+#include <asm-generic/memory_model.h>
#include <asm-generic/page.h>
#endif /* __ASM_SH64_PAGE_H */
#define code_resource (platform_parms.kram_res_p[STANDARD_KRAM_RESOURCES - 2])
#define data_resource (platform_parms.kram_res_p[STANDARD_KRAM_RESOURCES - 1])
-/* Be prepared to 64-bit sign extensions */
-#define PFN_UP(x) ((((x) + PAGE_SIZE-1) >> PAGE_SHIFT) & 0x000fffff)
-#define PFN_DOWN(x) (((x) >> PAGE_SHIFT) & 0x000fffff)
-#define PFN_PHYS(x) ((x) << PAGE_SHIFT)
-
#endif /* __ASM_SH64_PLATFORM_H */
#define virt_to_phys __pa
#define phys_to_virt __va
-#define pfn_to_page(pfn) (mem_map + ((pfn)-(pfn_base)))
-#define page_to_pfn(page) ((unsigned long)(((page) - mem_map) + pfn_base))
+#define ARCH_PFN_OFFSET (pfn_base)
#define virt_to_page(kaddr) (mem_map + ((((unsigned long)(kaddr)-PAGE_OFFSET)>>PAGE_SHIFT)))
#define pfn_valid(pfn) (((pfn) >= (pfn_base)) && (((pfn)-(pfn_base)) < max_mapnr))
#endif /* __KERNEL__ */
+#include <asm-generic/memory_model.h>
#include <asm-generic/page.h>
#endif /* _SPARC_PAGE_H */
if (!sun_floppy_types[0] && sun_floppy_types[1]) {
/*
* Set the drive exchange bit in FCR on NS87303,
- * make shure other bits are sane before doing so.
+ * make sure other bits are sane before doing so.
*/
ns87303_modify(config, FER, FER_EDM, 0);
ns87303_modify(config, ASC, ASC_DRV2_SEL, 0);
return ret;
}
+static inline int
+futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval, int newval)
+{
+ __asm__ __volatile__(
+ "\n1: lduwa [%2] %%asi, %0\n"
+ "2: casa [%2] %%asi, %0, %1\n"
+ "3:\n"
+ " .section .fixup,#alloc,#execinstr\n"
+ " .align 4\n"
+ "4: ba 3b\n"
+ " mov %3, %0\n"
+ " .previous\n"
+ " .section __ex_table,\"a\"\n"
+ " .align 4\n"
+ " .word 1b, 4b\n"
+ " .word 2b, 4b\n"
+ " .previous\n"
+ : "=&r" (oldval)
+ : "r" (newval), "r" (uaddr), "i" (-EFAULT)
+ : "memory");
+
+ return oldval;
+}
+
#endif /* !(_SPARC64_FUTEX_H) */
int signr;
};
-/* Note - you should never unregister because that can race with NMIs.
- * If you really want to do it first unregister - then synchronize_sched
- * - then free.
- */
-int register_die_notifier(struct notifier_block *nb);
-extern struct notifier_block *sparc64die_chain;
+extern int register_die_notifier(struct notifier_block *);
+extern int unregister_die_notifier(struct notifier_block *);
+extern struct atomic_notifier_head sparc64die_chain;
extern void bad_trap(struct pt_regs *, long);
.trapnr = trap,
.signr = sig };
- return notifier_call_chain(&sparc64die_chain, val, &args);
+ return atomic_notifier_call_chain(&sparc64die_chain, val, &args);
}
#endif
(_AC(0x0000000070000000,UL)) : \
(_AC(0xfffff80000000000,UL) + (1UL << 32UL)))
+#include <asm-generic/memory_model.h>
+
#endif /* !(__ASSEMBLY__) */
/* to align the pointer to the (next) page boundary */
#define __pa(virt) to_phys((void *) (unsigned long) (virt))
#define __va(phys) to_virt((unsigned long) (phys))
-#define page_to_pfn(page) ((page) - mem_map)
-#define pfn_to_page(pfn) (mem_map + (pfn))
-
#define phys_to_pfn(p) ((p) >> PAGE_SHIFT)
#define pfn_to_phys(pfn) ((pfn) << PAGE_SHIFT)
extern void arch_free_page(struct page *page, int order);
#define HAVE_ARCH_FREE_PAGE
+#include <asm-generic/memory_model.h>
#include <asm-generic/page.h>
#endif
#define __get_user(x, ptr) \
({ \
- const __typeof__(ptr) __private_ptr = ptr; \
- __typeof__(*(__private_ptr)) __private_val; \
- int __private_ret = -EFAULT; \
- (x) = (__typeof__(*(__private_ptr)))0; \
- if (__copy_from_user(&__private_val, (__private_ptr), \
- sizeof(*(__private_ptr))) == 0) {\
- (x) = (__typeof__(*(__private_ptr))) __private_val; \
- __private_ret = 0; \
- } \
- __private_ret; \
+ const __typeof__(ptr) __private_ptr = ptr; \
+ __typeof__(x) __private_val; \
+ int __private_ret = -EFAULT; \
+ (x) = (__typeof__(*(__private_ptr)))0; \
+ if (__copy_from_user((void *) &__private_val, (__private_ptr), \
+ sizeof(*(__private_ptr))) == 0) { \
+ (x) = (__typeof__(*(__private_ptr))) __private_val; \
+ __private_ret = 0; \
+ } \
+ __private_ret; \
})
#define get_user(x, ptr) \
};
#endif
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only. This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
#define page_to_virt(page) \
((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET)
-#define pfn_to_page(pfn) virt_to_page (pfn_to_virt (pfn))
-#define page_to_pfn(page) virt_to_pfn (page_to_virt (page))
+#define ARCH_PFN_OFFSET (PAGE_OFFSET >> PAGE_SHIFT)
#define pfn_valid(pfn) ((pfn) < max_mapnr)
#define virt_addr_valid(kaddr) \
#endif /* KERNEL */
+#include <asm-generic/memory_model.h>
#include <asm-generic/page.h>
#endif /* __V850_PAGE_H__ */
return ret;
}
+static inline int
+futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval, int newval)
+{
+ if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int)))
+ return -EFAULT;
+
+ __asm__ __volatile__(
+ "1: " LOCK_PREFIX "cmpxchgl %3, %1 \n"
+
+ "2: .section .fixup, \"ax\" \n"
+ "3: mov %2, %0 \n"
+ " jmp 2b \n"
+ " .previous \n"
+
+ " .section __ex_table, \"a\" \n"
+ " .align 8 \n"
+ " .quad 1b,3b \n"
+ " .previous \n"
+
+ : "=a" (oldval), "=m" (*uaddr)
+ : "i" (-EFAULT), "r" (newval), "0" (oldval)
+ : "memory"
+ );
+
+ return oldval;
+}
+
#endif
#endif
struct pt_regs;
-struct die_args {
+struct die_args {
struct pt_regs *regs;
const char *str;
- long err;
+ long err;
int trapnr;
int signr;
-};
+};
+
+extern int register_die_notifier(struct notifier_block *);
+extern int unregister_die_notifier(struct notifier_block *);
+extern struct atomic_notifier_head die_chain;
-/* Note - you should never unregister because that can race with NMIs.
- If you really want to do it first unregister - then synchronize_sched - then free.
- */
-int register_die_notifier(struct notifier_block *nb);
-extern struct notifier_block *die_chain;
/* Grossly misnamed. */
-enum die_val {
+enum die_val {
DIE_OOPS = 1,
DIE_INT3,
DIE_DEBUG,
DIE_CALL,
DIE_NMI_IPI,
DIE_PAGE_FAULT,
-};
-
+};
+
static inline int notify_die(enum die_val val, const char *str,
struct pt_regs *regs, long err, int trap, int sig)
{
.trapnr = trap,
.signr = sig
};
- return notifier_call_chain(&die_chain, val, &args);
+ return atomic_notifier_call_chain(&die_chain, val, &args);
}
extern int printk_address(unsigned long address);
#define pfn_to_nid(pfn) phys_to_nid((unsigned long)(pfn) << PAGE_SHIFT)
#define kvaddr_to_nid(kaddr) phys_to_nid(__pa(kaddr))
-extern struct page *pfn_to_page(unsigned long pfn);
-extern unsigned long page_to_pfn(struct page *page);
extern int pfn_valid(unsigned long pfn);
#endif
-#define local_mapnr(kvaddr) \
- ( (__pa(kvaddr) >> PAGE_SHIFT) - node_start_pfn(kvaddr_to_nid(kvaddr)) )
#endif
#endif
#define __boot_va(x) __va(x)
#define __boot_pa(x) __pa(x)
#ifdef CONFIG_FLATMEM
-#define pfn_to_page(pfn) (mem_map + (pfn))
-#define page_to_pfn(page) ((unsigned long)((page) - mem_map))
#define pfn_valid(pfn) ((pfn) < end_pfn)
#endif
#endif /* __KERNEL__ */
+#include <asm-generic/memory_model.h>
#include <asm-generic/page.h>
#endif /* _X86_64_PAGE_H */
#include <asm/mmsegment.h>
#include <asm/percpu.h>
#include <linux/personality.h>
+#include <linux/cpumask.h>
#define TF_MASK 0x00000100
#define IF_MASK 0x00000200
__u32 x86_power;
__u32 extended_cpuid_level; /* Max extended CPUID function supported */
unsigned long loops_per_jiffy;
+#ifdef CONFIG_SMP
+ cpumask_t llc_shared_map; /* cpus sharing the last level cache */
+#endif
__u8 apicid;
__u8 booted_cores; /* number of cores as seen by OS */
} ____cacheline_aligned;
struct extended_signature sigs[0];
};
-/* '6' because it used to be for P6 only (but now covers Pentium 4 as well) */
-#define MICROCODE_IOCFREE _IO('6',0)
-
#define ASM_NOP1 K8_NOP1
#define ASM_NOP2 K8_NOP2
extern cpumask_t cpu_core_map[NR_CPUS];
extern u8 phys_proc_id[NR_CPUS];
extern u8 cpu_core_id[NR_CPUS];
+extern u8 cpu_llc_id[NR_CPUS];
#define SMP_TRAMPOLINE_BASE 0x6000
#include <asm-generic/topology.h>
+extern cpumask_t cpu_coregroup_map(int cpu);
+
#endif
__SYSCALL(__NR_ppoll, sys_ni_syscall) /* for now */
#define __NR_unshare 272
__SYSCALL(__NR_unshare, sys_unshare)
+#define __NR_set_robust_list 273
+__SYSCALL(__NR_set_robust_list, sys_set_robust_list)
+#define __NR_get_robust_list 274
+__SYSCALL(__NR_get_robust_list, sys_get_robust_list)
-#define __NR_syscall_max __NR_unshare
+#define __NR_syscall_max __NR_get_robust_list
#ifndef __NO_STUBS
#define __pa(x) ((unsigned long) (x) - PAGE_OFFSET)
#define __va(x) ((void *)((unsigned long) (x) + PAGE_OFFSET))
#define pfn_valid(pfn) ((unsigned long)pfn < max_mapnr)
-#ifndef CONFIG_DISCONTIGMEM
-# define pfn_to_page(pfn) (mem_map + (pfn))
-# define page_to_pfn(page) ((unsigned long)((page) - mem_map))
-#else
+#ifdef CONFIG_DISCONTIGMEM
# error CONFIG_DISCONTIGMEM not supported
#endif
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
#endif /* __KERNEL__ */
+#include <asm-generic/memory_model.h>
#endif /* _XTENSA_PAGE_H */
ADB_MSG_POST_RESET /* Called after resetting the bus (re-do init & register) */
};
extern struct adb_driver *adb_controller;
-extern struct notifier_block *adb_client_list;
+extern struct blocking_notifier_head adb_client_list;
int adb_request(struct adb_request *req, void (*done)(struct adb_request *),
int flags, int nbytes, ...);
#define UART01x_RSR_ANY (UART01x_RSR_OE|UART01x_RSR_BE|UART01x_RSR_PE|UART01x_RSR_FE)
#define UART01x_FR_MODEM_ANY (UART01x_FR_DCD|UART01x_FR_DSR|UART01x_FR_CTS)
+#ifndef __ASSEMBLY__
+struct amba_pl010_data {
+ void (*set_mctrl)(struct amba_device *dev, void __iomem *base, unsigned int mctrl);
+};
+#endif
+
#endif
#undef AUTOFS_MIN_PROTO_VERSION
#undef AUTOFS_MAX_PROTO_VERSION
-#define AUTOFS_PROTO_VERSION 4
+#define AUTOFS_PROTO_VERSION 5
#define AUTOFS_MIN_PROTO_VERSION 3
-#define AUTOFS_MAX_PROTO_VERSION 4
+#define AUTOFS_MAX_PROTO_VERSION 5
-#define AUTOFS_PROTO_SUBVERSION 7
+#define AUTOFS_PROTO_SUBVERSION 0
/* Mask for expire behaviour */
#define AUTOFS_EXP_IMMEDIATE 1
#define AUTOFS_EXP_LEAVES 2
-/* New message type */
-#define autofs_ptype_expire_multi 2 /* Expire entry (umount request) */
+/* Daemon notification packet types */
+enum autofs_notify {
+ NFY_NONE,
+ NFY_MOUNT,
+ NFY_EXPIRE
+};
+
+/* Kernel protocol version 4 packet types */
+
+/* Expire entry (umount request) */
+#define autofs_ptype_expire_multi 2
+
+/* Kernel protocol version 5 packet types */
+
+/* Indirect mount missing and expire requests. */
+#define autofs_ptype_missing_indirect 3
+#define autofs_ptype_expire_indirect 4
+
+/* Direct mount missing and expire requests */
+#define autofs_ptype_missing_direct 5
+#define autofs_ptype_expire_direct 6
/* v4 multi expire (via pipe) */
struct autofs_packet_expire_multi {
char name[NAME_MAX+1];
};
+/* autofs v5 common packet struct */
+struct autofs_v5_packet {
+ struct autofs_packet_hdr hdr;
+ autofs_wqt_t wait_queue_token;
+ __u32 dev;
+ __u64 ino;
+ __u32 uid;
+ __u32 gid;
+ __u32 pid;
+ __u32 tgid;
+ __u32 len;
+ char name[NAME_MAX+1];
+};
+
+typedef struct autofs_v5_packet autofs_packet_missing_indirect_t;
+typedef struct autofs_v5_packet autofs_packet_expire_indirect_t;
+typedef struct autofs_v5_packet autofs_packet_missing_direct_t;
+typedef struct autofs_v5_packet autofs_packet_expire_direct_t;
+
union autofs_packet_union {
struct autofs_packet_hdr hdr;
struct autofs_packet_missing missing;
struct autofs_packet_expire expire;
struct autofs_packet_expire_multi expire_multi;
+ struct autofs_v5_packet v5_packet;
};
#define AUTOFS_IOC_EXPIRE_MULTI _IOW(0x93,0x66,int)
+#define AUTOFS_IOC_EXPIRE_INDIRECT AUTOFS_IOC_EXPIRE_MULTI
+#define AUTOFS_IOC_EXPIRE_DIRECT AUTOFS_IOC_EXPIRE_MULTI
#define AUTOFS_IOC_PROTOSUBVER _IOR(0x93,0x67,int)
#define AUTOFS_IOC_ASKREGHOST _IOR(0x93,0x68,int)
#define AUTOFS_IOC_TOGGLEREGHOST _IOR(0x93,0x69,int)
struct cfq_queue;
struct cfq_io_context {
- /*
- * circular list of cfq_io_contexts belonging to a process io context
- */
- struct list_head list;
- struct cfq_queue *cfqq[2];
+ struct rb_node rb_node;
void *key;
+ struct cfq_queue *cfqq[2];
+
struct io_context *ioc;
unsigned long last_end_request;
- unsigned long last_queue;
+ sector_t last_request_pos;
+ unsigned long last_queue;
+
unsigned long ttime_total;
unsigned long ttime_samples;
unsigned long ttime_mean;
+ unsigned int seek_samples;
+ u64 seek_total;
+ sector_t seek_mean;
+
struct list_head queue_list;
- void (*dtor)(struct cfq_io_context *);
- void (*exit)(struct cfq_io_context *);
+ void (*dtor)(struct io_context *); /* destructor */
+ void (*exit)(struct io_context *); /* called on task exit */
};
/*
int nr_batch_requests; /* Number of requests left in the batch */
struct as_io_context *aic;
- struct cfq_io_context *cic;
+ struct rb_root cic_root;
};
void put_io_context(struct io_context *ioc);
unsigned long last_pos;
unsigned long last_success; /* Previous allocation point. To speed
* up searching */
+ struct list_head list;
} bootmem_data_t;
extern unsigned long __init bootmem_bootmap_pages (unsigned long);
struct cdev {
struct kobject kobj;
struct module *owner;
- struct file_operations *ops;
+ const struct file_operations *ops;
struct list_head list;
dev_t dev;
unsigned int count;
};
-void cdev_init(struct cdev *, struct file_operations *);
+void cdev_init(struct cdev *, const struct file_operations *);
struct cdev *cdev_alloc(void);
extern struct address_space_operations coda_file_aops;
extern struct address_space_operations coda_symlink_aops;
-extern struct file_operations coda_dir_operations;
-extern struct file_operations coda_file_operations;
-extern struct file_operations coda_ioctl_operations;
+extern const struct file_operations coda_dir_operations;
+extern const struct file_operations coda_file_operations;
+extern const struct file_operations coda_ioctl_operations;
/* operations shared over more than one file */
int coda_open(struct inode *i, struct file *f);
} _sigev_un;
} compat_sigevent_t;
+struct compat_robust_list {
+ compat_uptr_t next;
+};
+
+struct compat_robust_list_head {
+ struct compat_robust_list list;
+ compat_long_t futex_offset;
+ compat_uptr_t list_op_pending;
+};
+
+extern void compat_exit_robust_list(struct task_struct *curr);
+
+asmlinkage long
+compat_sys_set_robust_list(struct compat_robust_list_head __user *head,
+ compat_size_t len);
+asmlinkage long
+compat_sys_get_robust_list(int pid, compat_uptr_t *head_ptr,
+ compat_size_t __user *len_ptr);
long compat_sys_semctl(int first, int second, int third, void __user *uptr);
long compat_sys_msgsnd(int first, int second, int third, void __user *uptr);
COMPATIBLE_IOCTL(DM_TABLE_STATUS_32)
COMPATIBLE_IOCTL(DM_LIST_VERSIONS_32)
COMPATIBLE_IOCTL(DM_TARGET_MSG_32)
+COMPATIBLE_IOCTL(DM_DEV_SET_GEOMETRY_32)
COMPATIBLE_IOCTL(DM_VERSION)
COMPATIBLE_IOCTL(DM_REMOVE_ALL)
COMPATIBLE_IOCTL(DM_LIST_DEVICES)
COMPATIBLE_IOCTL(DM_TABLE_STATUS)
COMPATIBLE_IOCTL(DM_LIST_VERSIONS)
COMPATIBLE_IOCTL(DM_TARGET_MSG)
+COMPATIBLE_IOCTL(DM_DEV_SET_GEOMETRY)
/* Big K */
COMPATIBLE_IOCTL(PIO_FONT)
COMPATIBLE_IOCTL(GIO_FONT)
*
* int any_online_cpu(mask) First online cpu in mask
*
- * for_each_cpu(cpu) for-loop cpu over cpu_possible_map
+ * for_each_possible_cpu(cpu) for-loop cpu over cpu_possible_map
* for_each_online_cpu(cpu) for-loop cpu over cpu_online_map
* for_each_present_cpu(cpu) for-loop cpu over cpu_present_map
*
#define any_online_cpu(mask) 0
#endif
-#define for_each_cpu(cpu) for_each_cpu_mask((cpu), cpu_possible_map)
+#define for_each_cpu(cpu) for_each_cpu_mask((cpu), cpu_possible_map)
+#define for_each_possible_cpu(cpu) for_each_cpu_mask((cpu), cpu_possible_map)
#define for_each_online_cpu(cpu) for_each_cpu_mask((cpu), cpu_online_map)
#define for_each_present_cpu(cpu) for_each_cpu_mask((cpu), cpu_present_map)
extern unsigned long long elfcorehdr_addr;
extern ssize_t copy_oldmem_page(unsigned long, char *, size_t,
unsigned long, int);
-extern struct file_operations proc_vmcore_operations;
+extern const struct file_operations proc_vmcore_operations;
extern struct proc_dir_entry *proc_vmcore;
#endif /* CONFIG_CRASH_DUMP */
#if defined(CONFIG_DEBUG_FS)
struct dentry *debugfs_create_file(const char *name, mode_t mode,
struct dentry *parent, void *data,
- struct file_operations *fops);
+ const struct file_operations *fops);
struct dentry *debugfs_create_dir(const char *name, struct dentry *parent);
unsigned short hardsect_size;
unsigned int max_segment_size;
unsigned long seg_boundary_mask;
+ unsigned char no_cluster; /* inverted so that 0 is default */
};
struct dm_target {
*
* DM_TARGET_MSG:
* Pass a message string to the target at a specific offset of a device.
+ *
+ * DM_DEV_SET_GEOMETRY:
+ * Set the geometry of a device by passing in a string in this format:
+ *
+ * "cylinders heads sectors_per_track start_sector"
+ *
+ * Beware that CHS geometry is nearly obsolete and only provided
+ * for compatibility with dm devices that can be booted by a PC
+ * BIOS. See struct hd_geometry for range limits. Also note that
+ * the geometry is erased if the device size changes.
*/
/*
/* Added later */
DM_LIST_VERSIONS_CMD,
DM_TARGET_MSG_CMD,
+ DM_DEV_SET_GEOMETRY_CMD
};
/*
#define DM_TABLE_STATUS_32 _IOWR(DM_IOCTL, DM_TABLE_STATUS_CMD, ioctl_struct)
#define DM_LIST_VERSIONS_32 _IOWR(DM_IOCTL, DM_LIST_VERSIONS_CMD, ioctl_struct)
#define DM_TARGET_MSG_32 _IOWR(DM_IOCTL, DM_TARGET_MSG_CMD, ioctl_struct)
+#define DM_DEV_SET_GEOMETRY_32 _IOWR(DM_IOCTL, DM_DEV_SET_GEOMETRY_CMD, ioctl_struct)
#endif
#define DM_IOCTL 0xfd
#define DM_LIST_VERSIONS _IOWR(DM_IOCTL, DM_LIST_VERSIONS_CMD, struct dm_ioctl)
#define DM_TARGET_MSG _IOWR(DM_IOCTL, DM_TARGET_MSG_CMD, struct dm_ioctl)
+#define DM_DEV_SET_GEOMETRY _IOWR(DM_IOCTL, DM_DEV_SET_GEOMETRY_CMD, struct dm_ioctl)
#define DM_VERSION_MAJOR 4
-#define DM_VERSION_MINOR 5
+#define DM_VERSION_MINOR 6
#define DM_VERSION_PATCHLEVEL 0
-#define DM_VERSION_EXTRA "-ioctl (2005-10-04)"
+#define DM_VERSION_EXTRA "-ioctl (2006-02-17)"
/* Status bits */
#define DM_READONLY_FLAG (1 << 0) /* In/Out */
#define DMA_30BIT_MASK 0x000000003fffffffULL
#define DMA_29BIT_MASK 0x000000001fffffffULL
#define DMA_28BIT_MASK 0x000000000fffffffULL
+#define DMA_24BIT_MASK 0x0000000000ffffffULL
#include <asm/dma-mapping.h>
struct statfs;
extern struct inode_operations efs_dir_inode_operations;
-extern struct file_operations efs_dir_operations;
+extern const struct file_operations efs_dir_operations;
extern struct address_space_operations efs_symlink_aops;
extern void efs_read_inode(struct inode *);
*/
/* dir.c */
-extern struct file_operations ext3_dir_operations;
+extern const struct file_operations ext3_dir_operations;
/* file.c */
extern struct inode_operations ext3_file_inode_operations;
-extern struct file_operations ext3_file_operations;
+extern const struct file_operations ext3_file_operations;
/* namei.c */
extern struct inode_operations ext3_dir_inode_operations;
/* A driver may set this flag to indicate that it does want a set_par to be
* called every time when fbcon_switch is executed. The advantage is that with
- * this flag set you can really be shure that set_par is always called before
+ * this flag set you can really be sure that set_par is always called before
* any of the functions dependant on the correct hardware state or altering
* that state, even if you are using some broken X releases. The disadvantage
* is that it introduces unwanted delays to every console switch if set_par
struct list_head bd_inodes;
void * bd_holder;
int bd_holders;
+#ifdef CONFIG_SYSFS
+ struct list_head bd_holder_list;
+#endif
struct block_device * bd_contains;
unsigned bd_block_size;
struct hd_struct * bd_part;
struct mutex i_mutex;
struct rw_semaphore i_alloc_sem;
struct inode_operations *i_op;
- struct file_operations *i_fop; /* former ->i_op->default_file_ops */
+ const struct file_operations *i_fop; /* former ->i_op->default_file_ops */
struct super_block *i_sb;
struct file_lock *i_flock;
struct address_space *i_mapping;
} f_u;
struct dentry *f_dentry;
struct vfsmount *f_vfsmnt;
- struct file_operations *f_op;
+ const struct file_operations *f_op;
atomic_t f_count;
unsigned int f_flags;
mode_t f_mode;
extern void bd_forget(struct inode *inode);
extern void bdput(struct block_device *);
extern struct block_device *open_by_devnum(dev_t, unsigned);
-extern struct file_operations def_blk_fops;
+extern const struct file_operations def_blk_fops;
extern struct address_space_operations def_blk_aops;
-extern struct file_operations def_chr_fops;
-extern struct file_operations bad_sock_fops;
-extern struct file_operations def_fifo_fops;
+extern const struct file_operations def_chr_fops;
+extern const struct file_operations bad_sock_fops;
+extern const struct file_operations def_fifo_fops;
extern int ioctl_by_bdev(struct block_device *, unsigned, unsigned long);
extern int blkdev_ioctl(struct inode *, struct file *, unsigned, unsigned long);
extern long compat_blkdev_ioctl(struct file *, unsigned, unsigned long);
extern int blkdev_put(struct block_device *);
extern int bd_claim(struct block_device *, void *);
extern void bd_release(struct block_device *);
+#ifdef CONFIG_SYSFS
+extern int bd_claim_by_disk(struct block_device *, void *, struct gendisk *);
+extern void bd_release_from_disk(struct block_device *, struct gendisk *);
+#else
+#define bd_claim_by_disk(bdev, holder, disk) bd_claim(bdev, holder)
+#define bd_release_from_disk(bdev, disk) bd_release(bdev)
+#endif
/* fs/char_dev.c */
extern int alloc_chrdev_region(dev_t *, unsigned, unsigned, const char *);
extern int register_chrdev_region(dev_t, unsigned, const char *);
extern int register_chrdev(unsigned int, const char *,
- struct file_operations *);
+ const struct file_operations *);
extern int unregister_chrdev(unsigned int, const char *);
extern void unregister_chrdev_region(dev_t, unsigned);
extern int chrdev_open(struct inode *, struct file *);
extern void make_bad_inode(struct inode *);
extern int is_bad_inode(struct inode *);
-extern struct file_operations read_fifo_fops;
-extern struct file_operations write_fifo_fops;
-extern struct file_operations rdwr_fifo_fops;
+extern const struct file_operations read_fifo_fops;
+extern const struct file_operations write_fifo_fops;
+extern const struct file_operations rdwr_fifo_fops;
extern int fs_may_remount_ro(struct super_block *);
nr_segs, get_block, end_io, DIO_OWN_LOCKING);
}
-extern struct file_operations generic_ro_fops;
+extern const struct file_operations generic_ro_fops;
#define special_file(m) (S_ISCHR(m)||S_ISBLK(m)||S_ISFIFO(m)||S_ISSOCK(m))
extern struct dentry *simple_lookup(struct inode *, struct dentry *, struct nameidata *);
extern ssize_t generic_read_dir(struct file *, char __user *, size_t, loff_t *);
-extern struct file_operations simple_dir_operations;
+extern const struct file_operations simple_dir_operations;
extern struct inode_operations simple_dir_inode_operations;
-struct tree_descr { char *name; struct file_operations *ops; int mode; };
+struct tree_descr { char *name; const struct file_operations *ops; int mode; };
struct dentry *d_alloc_name(struct dentry *, const char *);
extern int simple_fill_super(struct super_block *, int, struct tree_descr *);
extern int simple_pin_fs(char *name, struct vfsmount **mount, int *count);
#ifndef _LINUX_FUTEX_H
#define _LINUX_FUTEX_H
+#include <linux/sched.h>
+
/* Second argument to futex syscall */
#define FUTEX_CMP_REQUEUE 4
#define FUTEX_WAKE_OP 5
+/*
+ * Support for robust futexes: the kernel cleans up held futexes at
+ * thread exit time.
+ */
+
+/*
+ * Per-lock list entry - embedded in user-space locks, somewhere close
+ * to the futex field. (Note: user-space uses a double-linked list to
+ * achieve O(1) list add and remove, but the kernel only needs to know
+ * about the forward link)
+ *
+ * NOTE: this structure is part of the syscall ABI, and must not be
+ * changed.
+ */
+struct robust_list {
+ struct robust_list __user *next;
+};
+
+/*
+ * Per-thread list head:
+ *
+ * NOTE: this structure is part of the syscall ABI, and must only be
+ * changed if the change is first communicated with the glibc folks.
+ * (When an incompatible change is done, we'll increase the structure
+ * size, which glibc will detect)
+ */
+struct robust_list_head {
+ /*
+ * The head of the list. Points back to itself if empty:
+ */
+ struct robust_list list;
+
+ /*
+ * This relative offset is set by user-space, it gives the kernel
+ * the relative position of the futex field to examine. This way
+ * we keep userspace flexible, to freely shape its data-structure,
+ * without hardcoding any particular offset into the kernel:
+ */
+ long futex_offset;
+
+ /*
+ * The death of the thread may race with userspace setting
+ * up a lock's links. So to handle this race, userspace first
+ * sets this field to the address of the to-be-taken lock,
+ * then does the lock acquire, and then adds itself to the
+ * list, and then clears this field. Hence the kernel will
+ * always have full knowledge of all locks that the thread
+ * _might_ have taken. We check the owner TID in any case,
+ * so only truly owned locks will be handled.
+ */
+ struct robust_list __user *list_op_pending;
+};
+
+/*
+ * Are there any waiters for this robust futex:
+ */
+#define FUTEX_WAITERS 0x80000000
+
+/*
+ * The kernel signals via this bit that a thread holding a futex
+ * has exited without unlocking the futex. The kernel also does
+ * a FUTEX_WAKE on such futexes, after setting the bit, to wake
+ * up any possible waiters:
+ */
+#define FUTEX_OWNER_DIED 0x40000000
+
+/*
+ * The rest of the robust-futex field is for the TID:
+ */
+#define FUTEX_TID_MASK 0x3fffffff
+
+/*
+ * This limit protects against a deliberately circular list.
+ * (Not worth introducing an rlimit for it)
+ */
+#define ROBUST_LIST_LIMIT 2048
+
long do_futex(unsigned long uaddr, int op, int val,
unsigned long timeout, unsigned long uaddr2, int val2,
int val3);
+extern int handle_futex_death(u32 __user *uaddr, struct task_struct *curr);
+
+#ifdef CONFIG_FUTEX
+extern void exit_robust_list(struct task_struct *curr);
+#else
+static inline void exit_robust_list(struct task_struct *curr)
+{
+}
+#endif
+
#define FUTEX_OP_SET 0 /* *(int *)UADDR2 = OPARG; */
#define FUTEX_OP_ADD 1 /* *(int *)UADDR2 += OPARG; */
#define FUTEX_OP_OR 2 /* *(int *)UADDR2 |= OPARG; */
sector_t start_sect;
sector_t nr_sects;
struct kobject kobj;
+ struct kobject *holder_dir;
unsigned ios[2], sectors[2]; /* READs and WRITEs */
int policy, partno;
};
#define GENHD_FL_SUPPRESS_PARTITION_INFO 32
struct disk_stats {
- unsigned sectors[2]; /* READs and WRITEs */
- unsigned ios[2];
- unsigned merges[2];
- unsigned ticks[2];
- unsigned io_ticks;
- unsigned time_in_queue;
+ unsigned long sectors[2]; /* READs and WRITEs */
+ unsigned long ios[2];
+ unsigned long merges[2];
+ unsigned long ticks[2];
+ unsigned long io_ticks;
+ unsigned long time_in_queue;
};
struct gendisk {
int number; /* more of the same */
struct device *driverfs_dev;
struct kobject kobj;
+ struct kobject *holder_dir;
+ struct kobject *slave_dir;
struct timer_rand_state *random;
int policy;
({ \
typeof(gendiskp->dkstats->field) res = 0; \
int i; \
- for_each_cpu(i) \
+ for_each_possible_cpu(i) \
res += per_cpu_ptr(gendiskp->dkstats, i)->field; \
res; \
})
static inline void disk_stat_set_all(struct gendisk *gendiskp, int value) {
int i;
- for_each_cpu(i)
+ for_each_possible_cpu(i)
memset(per_cpu_ptr(gendiskp->dkstats, i), value,
sizeof (struct disk_stats));
}
return sb->s_fs_info;
}
-extern struct file_operations hugetlbfs_file_operations;
+extern const struct file_operations hugetlbfs_file_operations;
extern struct vm_operations_struct hugetlb_vm_ops;
struct file *hugetlb_zero_setup(size_t);
int hugetlb_extend_reservation(struct hugetlbfs_inode_info *info,
#define I2C_DRIVERID_UPD64083 78 /* upd64083 video processor */
#define I2C_DRIVERID_UPD64031A 79 /* upd64031a video processor */
#define I2C_DRIVERID_SAA717X 80 /* saa717x video encoder */
+#define I2C_DRIVERID_DS1672 81 /* Dallas/Maxim DS1672 RTC */
+#define I2C_DRIVERID_X1205 82 /* Xicor/Intersil X1205 RTC */
+#define I2C_DRIVERID_PCF8563 83 /* Philips PCF8563 RTC */
+#define I2C_DRIVERID_RS5C372 84 /* Ricoh RS5C372 RTC */
#define I2C_DRIVERID_I2CDEV 900
#define I2C_DRIVERID_ARP 902 /* SMBus ARP Client */
struct input_handle* (*connect)(struct input_handler *handler, struct input_dev *dev, struct input_device_id *id);
void (*disconnect)(struct input_handle *handle);
- struct file_operations *fops;
+ const struct file_operations *fops;
int minor;
char *name;
(__x < 0) ? -__x : __x; \
})
-extern struct notifier_block *panic_notifier_list;
+extern struct atomic_notifier_head panic_notifier_list;
extern long (*panic_blink)(long time);
NORET_TYPE void panic(const char * fmt, ...)
__attribute__ ((NORET_AND format (printf, 1, 2)));
{
int cpu, sum = 0;
- for_each_cpu(cpu)
+ for_each_possible_cpu(cpu)
sum += kstat_cpu(cpu).irqs[irq];
return sum;
--- /dev/null
+/*
+ * ST M48T86 / Dallas DS12887 RTC driver
+ * Copyright (c) 2006 Tower Technologies
+ *
+ * Author: Alessandro Zummo <a.zummo@towertech.it>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+struct m48t86_ops
+{
+ void (*writeb)(unsigned char value, unsigned long addr);
+ unsigned char (*readb)(unsigned long addr);
+};
#define CONFIG_MEM_BLOCK_SIZE (PAGES_PER_SECTION<<PAGE_SHIFT)
-struct notifier_block;
#endif /* CONFIG_MEMORY_HOTPLUG */
struct miscdevice {
int minor;
const char *name;
- struct file_operations *fops;
+ const struct file_operations *fops;
struct list_head list;
struct device *dev;
struct class_device *class;
#include <linux/numa.h>
#include <linux/init.h>
#include <linux/seqlock.h>
+#include <linux/nodemask.h>
#include <asm/atomic.h>
/* Free memory management - zoned buddy allocator. */
* Discontig memory support fields.
*/
struct pglist_data *zone_pgdat;
- struct page *zone_mem_map;
/* zone_start_pfn == zone_start_paddr >> PAGE_SHIFT */
unsigned long zone_start_pfn;
unsigned long node_spanned_pages; /* total size of physical page
range, including holes */
int node_id;
- struct pglist_data *pgdat_next;
wait_queue_head_t kswapd_wait;
struct task_struct *kswapd;
int kswapd_max_order;
#include <linux/memory_hotplug.h>
-extern struct pglist_data *pgdat_list;
-
void __get_zone_counts(unsigned long *active, unsigned long *inactive,
unsigned long *free, struct pglist_data *pgdat);
void get_zone_counts(unsigned long *active, unsigned long *inactive,
*/
#define zone_idx(zone) ((zone) - (zone)->zone_pgdat->node_zones)
-/**
- * for_each_pgdat - helper macro to iterate over all nodes
- * @pgdat - pointer to a pg_data_t variable
- *
- * Meant to help with common loops of the form
- * pgdat = pgdat_list;
- * while(pgdat) {
- * ...
- * pgdat = pgdat->pgdat_next;
- * }
- */
-#define for_each_pgdat(pgdat) \
- for (pgdat = pgdat_list; pgdat; pgdat = pgdat->pgdat_next)
-
-/*
- * next_zone - helper magic for for_each_zone()
- * Thanks to William Lee Irwin III for this piece of ingenuity.
- */
-static inline struct zone *next_zone(struct zone *zone)
-{
- pg_data_t *pgdat = zone->zone_pgdat;
-
- if (zone < pgdat->node_zones + MAX_NR_ZONES - 1)
- zone++;
- else if (pgdat->pgdat_next) {
- pgdat = pgdat->pgdat_next;
- zone = pgdat->node_zones;
- } else
- zone = NULL;
-
- return zone;
-}
-
-/**
- * for_each_zone - helper macro to iterate over all memory zones
- * @zone - pointer to struct zone variable
- *
- * The user only needs to declare the zone variable, for_each_zone
- * fills it in. This basically means for_each_zone() is an
- * easier to read version of this piece of code:
- *
- * for (pgdat = pgdat_list; pgdat; pgdat = pgdat->node_next)
- * for (i = 0; i < MAX_NR_ZONES; ++i) {
- * struct zone * z = pgdat->node_zones + i;
- * ...
- * }
- * }
- */
-#define for_each_zone(zone) \
- for (zone = pgdat_list->node_zones; zone; zone = next_zone(zone))
-
static inline int populated_zone(struct zone *zone)
{
return (!!zone->present_pages);
#endif /* !CONFIG_NEED_MULTIPLE_NODES */
+extern struct pglist_data *first_online_pgdat(void);
+extern struct pglist_data *next_online_pgdat(struct pglist_data *pgdat);
+extern struct zone *next_zone(struct zone *zone);
+
+/**
+ * for_each_pgdat - helper macro to iterate over all nodes
+ * @pgdat - pointer to a pg_data_t variable
+ */
+#define for_each_online_pgdat(pgdat) \
+ for (pgdat = first_online_pgdat(); \
+ pgdat; \
+ pgdat = next_online_pgdat(pgdat))
+/**
+ * for_each_zone - helper macro to iterate over all memory zones
+ * @zone - pointer to struct zone variable
+ *
+ * The user only needs to declare the zone variable, for_each_zone
+ * fills it in.
+ */
+#define for_each_zone(zone) \
+ for (zone = (first_online_pgdat())->node_zones; \
+ zone; \
+ zone = next_zone(zone))
+
#ifdef CONFIG_SPARSEMEM
#include <asm/sparsemem.h>
#endif
return __nr_to_section(pfn_to_section_nr(pfn));
}
-#define pfn_to_page(pfn) \
-({ \
- unsigned long __pfn = (pfn); \
- __section_mem_map_addr(__pfn_to_section(__pfn)) + __pfn; \
-})
-#define page_to_pfn(page) \
-({ \
- page - __section_mem_map_addr(__nr_to_section( \
- page_to_section(page))); \
-})
-
static inline int pfn_valid(unsigned long pfn)
{
if (pfn_to_section_nr(pfn) >= NR_MEM_SECTIONS)
unsigned long *mapped_blocks);
/* fat/dir.c */
-extern struct file_operations fat_dir_operations;
+extern const struct file_operations fat_dir_operations;
extern int fat_search_long(struct inode *inode, const unsigned char *name,
int name_len, struct fat_slot_info *sinfo);
extern int fat_dir_empty(struct inode *dir);
/* fat/file.c */
extern int fat_generic_ioctl(struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg);
-extern struct file_operations fat_file_operations;
+extern const struct file_operations fat_file_operations;
extern struct inode_operations fat_file_inode_operations;
extern int fat_notify_change(struct dentry * dentry, struct iattr * attr);
extern void fat_truncate(struct inode *inode);
extern void fat_date_unix2dos(int unix_date, __le16 *time, __le16 *date);
extern int fat_sync_bhs(struct buffer_head **bhs, int nr_bhs);
+int fat_cache_init(void);
+void fat_cache_destroy(void);
+
#endif /* __KERNEL__ */
#endif
/* linux/fs/ncpfs/dir.c */
extern struct inode_operations ncp_dir_inode_operations;
-extern struct file_operations ncp_dir_operations;
+extern const struct file_operations ncp_dir_operations;
int ncp_conn_logged_in(struct super_block *);
int ncp_date_dos2unix(__le16 time, __le16 date);
void ncp_date_unix2dos(int unix_date, __le16 * time, __le16 * date);
/* linux/fs/ncpfs/file.c */
extern struct inode_operations ncp_file_inode_operations;
-extern struct file_operations ncp_file_operations;
+extern const struct file_operations ncp_file_operations;
int ncp_make_open(struct inode *, int);
/* linux/fs/ncpfs/mmap.c */
#define CONNTRACK_ECACHE(x) (__get_cpu_var(ip_conntrack_ecache).x)
-extern struct notifier_block *ip_conntrack_chain;
-extern struct notifier_block *ip_conntrack_expect_chain;
+extern struct atomic_notifier_head ip_conntrack_chain;
+extern struct atomic_notifier_head ip_conntrack_expect_chain;
static inline int ip_conntrack_register_notifier(struct notifier_block *nb)
{
- return notifier_chain_register(&ip_conntrack_chain, nb);
+ return atomic_notifier_chain_register(&ip_conntrack_chain, nb);
}
static inline int ip_conntrack_unregister_notifier(struct notifier_block *nb)
{
- return notifier_chain_unregister(&ip_conntrack_chain, nb);
+ return atomic_notifier_chain_unregister(&ip_conntrack_chain, nb);
}
static inline int
ip_conntrack_expect_register_notifier(struct notifier_block *nb)
{
- return notifier_chain_register(&ip_conntrack_expect_chain, nb);
+ return atomic_notifier_chain_register(&ip_conntrack_expect_chain, nb);
}
static inline int
ip_conntrack_expect_unregister_notifier(struct notifier_block *nb)
{
- return notifier_chain_unregister(&ip_conntrack_expect_chain, nb);
+ return atomic_notifier_chain_unregister(&ip_conntrack_expect_chain,
+ nb);
}
extern void ip_ct_deliver_cached_events(const struct ip_conntrack *ct);
struct ip_conntrack *ct)
{
if (is_confirmed(ct) && !is_dying(ct))
- notifier_call_chain(&ip_conntrack_chain, event, ct);
+ atomic_notifier_call_chain(&ip_conntrack_chain, event, ct);
}
static inline void
ip_conntrack_expect_event(enum ip_conntrack_expect_events event,
struct ip_conntrack_expect *exp)
{
- notifier_call_chain(&ip_conntrack_expect_chain, event, exp);
+ atomic_notifier_call_chain(&ip_conntrack_expect_chain, event, exp);
}
#else /* CONFIG_IP_NF_CONNTRACK_EVENTS */
static inline void ip_conntrack_event_cache(enum ip_conntrack_events event,
#ifdef CONFIG_NFS_V3
extern struct inode_operations nfs3_file_inode_operations;
#endif /* CONFIG_NFS_V3 */
-extern struct file_operations nfs_file_operations;
+extern const struct file_operations nfs_file_operations;
extern struct address_space_operations nfs_file_aops;
static inline struct rpc_cred *nfs_file_cred(struct file *file)
#ifdef CONFIG_NFS_V3
extern struct inode_operations nfs3_dir_inode_operations;
#endif /* CONFIG_NFS_V3 */
-extern struct file_operations nfs_dir_operations;
+extern const struct file_operations nfs_dir_operations;
extern struct dentry_operations nfs_dentry_operations;
extern int nfs_instantiate(struct dentry *dentry, struct nfs_fh *fh, struct nfs_fattr *fattr);
int ek_fsidtype;
u32 ek_fsid[3];
- struct svc_export * ek_export;
+ struct vfsmount * ek_mnt;
+ struct dentry * ek_dentry;
};
#define EX_SECURE(exp) (!((exp)->ex_flags & NFSEXP_INSECURE_PORT))
void nfsd_export_flush(void);
void exp_readlock(void);
void exp_readunlock(void);
-struct svc_expkey * exp_find_key(struct auth_domain *clp,
- int fsid_type, u32 *fsidv,
- struct cache_req *reqp);
struct svc_export * exp_get_by_name(struct auth_domain *clp,
struct vfsmount *mnt,
struct dentry *dentry,
int exp_pseudoroot(struct auth_domain *, struct svc_fh *fhp, struct cache_req *creq);
int nfserrno(int errno);
-extern void expkey_put(struct cache_head *item, struct cache_detail *cd);
-extern void svc_export_put(struct cache_head *item, struct cache_detail *cd);
-extern struct cache_detail svc_export_cache, svc_expkey_cache;
+extern struct cache_detail svc_export_cache;
static inline void exp_put(struct svc_export *exp)
{
- svc_export_put(&exp->h, &svc_export_cache);
+ cache_put(&exp->h, &svc_export_cache);
}
static inline void exp_get(struct svc_export *exp)
{
cache_get(&exp->h);
}
-static inline struct svc_export *
+extern struct svc_export *
exp_find(struct auth_domain *clp, int fsid_type, u32 *fsidv,
- struct cache_req *reqp)
-{
- struct svc_expkey *ek = exp_find_key(clp, fsid_type, fsidv, reqp);
- if (ek && !IS_ERR(ek)) {
- struct svc_export *exp = ek->ek_export;
- int err;
- exp_get(exp);
- expkey_put(&ek->h, &svc_expkey_cache);
- if ((err = cache_check(&svc_export_cache, &exp->h, reqp)))
- exp = ERR_PTR(err);
- return exp;
- } else
- return ERR_PTR(PTR_ERR(ek));
-}
+ struct cache_req *reqp);
#endif /* __KERNEL__ */
#define num_possible_nodes() nodes_weight(node_possible_map)
#define node_online(node) node_isset((node), node_online_map)
#define node_possible(node) node_isset((node), node_possible_map)
+#define first_online_node first_node(node_online_map)
+#define next_online_node(nid) next_node((nid), node_online_map)
#else
#define num_online_nodes() 1
#define num_possible_nodes() 1
#define node_online(node) ((node) == 0)
#define node_possible(node) ((node) == 0)
+#define first_online_node 0
+#define next_online_node(nid) (MAX_NUMNODES)
#endif
#define any_online_node(mask) \
#ifndef _LINUX_NOTIFIER_H
#define _LINUX_NOTIFIER_H
#include <linux/errno.h>
+#include <linux/mutex.h>
+#include <linux/rwsem.h>
-struct notifier_block
-{
- int (*notifier_call)(struct notifier_block *self, unsigned long, void *);
+/*
+ * Notifier chains are of three types:
+ *
+ * Atomic notifier chains: Chain callbacks run in interrupt/atomic
+ * context. Callouts are not allowed to block.
+ * Blocking notifier chains: Chain callbacks run in process context.
+ * Callouts are allowed to block.
+ * Raw notifier chains: There are no restrictions on callbacks,
+ * registration, or unregistration. All locking and protection
+ * must be provided by the caller.
+ *
+ * atomic_notifier_chain_register() may be called from an atomic context,
+ * but blocking_notifier_chain_register() must be called from a process
+ * context. Ditto for the corresponding _unregister() routines.
+ *
+ * atomic_notifier_chain_unregister() and blocking_notifier_chain_unregister()
+ * _must not_ be called from within the call chain.
+ */
+
+struct notifier_block {
+ int (*notifier_call)(struct notifier_block *, unsigned long, void *);
struct notifier_block *next;
int priority;
};
+struct atomic_notifier_head {
+ spinlock_t lock;
+ struct notifier_block *head;
+};
+
+struct blocking_notifier_head {
+ struct rw_semaphore rwsem;
+ struct notifier_block *head;
+};
+
+struct raw_notifier_head {
+ struct notifier_block *head;
+};
+
+#define ATOMIC_INIT_NOTIFIER_HEAD(name) do { \
+ spin_lock_init(&(name)->lock); \
+ (name)->head = NULL; \
+ } while (0)
+#define BLOCKING_INIT_NOTIFIER_HEAD(name) do { \
+ init_rwsem(&(name)->rwsem); \
+ (name)->head = NULL; \
+ } while (0)
+#define RAW_INIT_NOTIFIER_HEAD(name) do { \
+ (name)->head = NULL; \
+ } while (0)
+
+#define ATOMIC_NOTIFIER_INIT(name) { \
+ .lock = SPIN_LOCK_UNLOCKED, \
+ .head = NULL }
+#define BLOCKING_NOTIFIER_INIT(name) { \
+ .rwsem = __RWSEM_INITIALIZER((name).rwsem), \
+ .head = NULL }
+#define RAW_NOTIFIER_INIT(name) { \
+ .head = NULL }
+
+#define ATOMIC_NOTIFIER_HEAD(name) \
+ struct atomic_notifier_head name = \
+ ATOMIC_NOTIFIER_INIT(name)
+#define BLOCKING_NOTIFIER_HEAD(name) \
+ struct blocking_notifier_head name = \
+ BLOCKING_NOTIFIER_INIT(name)
+#define RAW_NOTIFIER_HEAD(name) \
+ struct raw_notifier_head name = \
+ RAW_NOTIFIER_INIT(name)
#ifdef __KERNEL__
-extern int notifier_chain_register(struct notifier_block **list, struct notifier_block *n);
-extern int notifier_chain_unregister(struct notifier_block **nl, struct notifier_block *n);
-extern int notifier_call_chain(struct notifier_block **n, unsigned long val, void *v);
+extern int atomic_notifier_chain_register(struct atomic_notifier_head *,
+ struct notifier_block *);
+extern int blocking_notifier_chain_register(struct blocking_notifier_head *,
+ struct notifier_block *);
+extern int raw_notifier_chain_register(struct raw_notifier_head *,
+ struct notifier_block *);
+
+extern int atomic_notifier_chain_unregister(struct atomic_notifier_head *,
+ struct notifier_block *);
+extern int blocking_notifier_chain_unregister(struct blocking_notifier_head *,
+ struct notifier_block *);
+extern int raw_notifier_chain_unregister(struct raw_notifier_head *,
+ struct notifier_block *);
+
+extern int atomic_notifier_call_chain(struct atomic_notifier_head *,
+ unsigned long val, void *v);
+extern int blocking_notifier_call_chain(struct blocking_notifier_head *,
+ unsigned long val, void *v);
+extern int raw_notifier_call_chain(struct raw_notifier_head *,
+ unsigned long val, void *v);
#define NOTIFY_DONE 0x0000 /* Don't care */
#define NOTIFY_OK 0x0001 /* Suits me */
#define NOTIFY_STOP_MASK 0x8000 /* Don't call further */
-#define NOTIFY_BAD (NOTIFY_STOP_MASK|0x0002) /* Bad/Veto action */
+#define NOTIFY_BAD (NOTIFY_STOP_MASK|0x0002)
+ /* Bad/Veto action */
/*
* Clean way to return from the notifier and stop further calls.
*/
*/
void oprofile_add_sample(struct pt_regs * const regs, unsigned long event);
+/**
+ * Add an extended sample. Use this when the PC is not from the regs, and
+ * we cannot determine if we're in kernel mode from the regs.
+ *
+ * This function does perform a backtrace.
+ *
+ */
+void oprofile_add_ext_sample(unsigned long pc, struct pt_regs * const regs,
+ unsigned long event, int is_kernel);
+
/* Use this instead when the PC value is not from the regs. Doesn't
* backtrace. */
void oprofile_add_pc(unsigned long pc, int is_kernel, unsigned long event);
* the specified file operations.
*/
int oprofilefs_create_file(struct super_block * sb, struct dentry * root,
- char const * name, struct file_operations * fops);
+ char const * name, const struct file_operations * fops);
int oprofilefs_create_file_perm(struct super_block * sb, struct dentry * root,
- char const * name, struct file_operations * fops, int perm);
+ char const * name, const struct file_operations * fops, int perm);
/** Create a file for read/write access to an unsigned long. */
int oprofilefs_create_ulong(struct super_block * sb, struct dentry * root,
#define PCI_DEVICE_ID_SI_965 0x0965
#define PCI_DEVICE_ID_SI_5511 0x5511
#define PCI_DEVICE_ID_SI_5513 0x5513
+#define PCI_DEVICE_ID_SI_5517 0x5517
#define PCI_DEVICE_ID_SI_5518 0x5518
#define PCI_DEVICE_ID_SI_5571 0x5571
#define PCI_DEVICE_ID_SI_5581 0x5581
#define PCIE_DEVICE_ID_NVIDIA_GEFORCE_6600_ALT2 0x00f2
#define PCIE_DEVICE_ID_NVIDIA_GEFORCE_6200_ALT1 0x00f3
#define PCIE_DEVICE_ID_NVIDIA_GEFORCE_6800_GT 0x00f9
+#define PCIE_DEVICE_ID_NVIDIA_QUADRO_NVS280 0x00fd
#define PCI_DEVICE_ID_NVIDIA_GEFORCE_SDR 0x0100
#define PCI_DEVICE_ID_NVIDIA_GEFORCE_DDR 0x0101
#define PCI_DEVICE_ID_NVIDIA_QUADRO 0x0103
--- /dev/null
+#ifndef _LINUX_PFN_H_
+#define _LINUX_PFN_H_
+
+#define PFN_ALIGN(x) (((unsigned long)(x) + (PAGE_SIZE - 1)) & PAGE_MASK)
+#define PFN_UP(x) (((x) + PAGE_SIZE-1) >> PAGE_SHIFT)
+#define PFN_DOWN(x) ((x) >> PAGE_SHIFT)
+#define PFN_PHYS(x) ((x) << PAGE_SHIFT)
+
+#endif
#include <linux/mm.h>
#include <asm/uaccess.h>
+/* ~832 bytes of stack space used max in sys_select/sys_poll before allocating
+ additional memory. */
+#define MAX_STACK_ALLOC 832
+#define FRONTEND_STACK_ALLOC 256
+#define SELECT_STACK_ALLOC FRONTEND_STACK_ALLOC
+#define POLL_STACK_ALLOC FRONTEND_STACK_ALLOC
+#define WQUEUES_STACK_ALLOC (MAX_STACK_ALLOC - FRONTEND_STACK_ALLOC)
+#define N_INLINE_POLL_ENTRIES (WQUEUES_STACK_ALLOC / sizeof(struct poll_table_entry))
+
struct poll_table_struct;
/*
pt->qproc = qproc;
}
+struct poll_table_entry {
+ struct file * filp;
+ wait_queue_t wait;
+ wait_queue_head_t * wait_address;
+};
+
/*
* Structures and helpers for sys_poll/sys_poll
*/
poll_table pt;
struct poll_table_page * table;
int error;
+ int inline_index;
+ struct poll_table_entry inline_entries[N_INLINE_POLL_ENTRIES];
};
extern void poll_initwait(struct poll_wqueues *pwq);
gid_t gid;
loff_t size;
struct inode_operations * proc_iops;
- struct file_operations * proc_fops;
+ const struct file_operations * proc_fops;
get_info_t *get_info;
struct module *owner;
struct proc_dir_entry *next, *parent, *subdir;
extern int proc_readdir(struct file *, void *, filldir_t);
extern struct dentry *proc_lookup(struct inode *, struct dentry *, struct nameidata *);
-extern struct file_operations proc_kcore_operations;
-extern struct file_operations proc_kmsg_operations;
-extern struct file_operations ppc_htab_operations;
+extern const struct file_operations proc_kcore_operations;
+extern const struct file_operations proc_kmsg_operations;
+extern const struct file_operations ppc_htab_operations;
/*
* proc_tty.c
}
static inline struct proc_dir_entry *proc_net_fops_create(const char *name,
- mode_t mode, struct file_operations *fops)
+ mode_t mode, const struct file_operations *fops)
{
struct proc_dir_entry *res = create_proc_entry(name, mode, proc_net);
if (res)
extern struct inode_operations qnx4_file_inode_operations;
extern struct inode_operations qnx4_dir_inode_operations;
-extern struct file_operations qnx4_file_operations;
-extern struct file_operations qnx4_dir_operations;
+extern const struct file_operations qnx4_file_operations;
+extern const struct file_operations qnx4_dir_operations;
extern int qnx4_is_free(struct super_block *sb, long block);
extern int qnx4_set_bitmap(struct super_block *sb, long block, int busy);
extern int qnx4_create(struct inode *inode, struct dentry *dentry, int mode, struct nameidata *nd);
extern void md_super_wait(mddev_t *mddev);
extern int sync_page_io(struct block_device *bdev, sector_t sector, int size,
struct page *page, int rw);
+extern void md_do_sync(mddev_t *mddev);
+extern void md_new_event(mddev_t *mddev);
+extern void md_update_sb(mddev_t * mddev);
#define MD_BUG(x...) { printk("md: bug in file %s, line %d\n", __FILE__, __LINE__); md_print_devices(); }
char uuid[16];
+ /* If the array is being reshaped, we need to record the
+ * new shape and an indication of where we are up to.
+ * This is written to the superblock.
+ * If reshape_position is MaxSector, then no reshape is happening (yet).
+ */
+ sector_t reshape_position;
+ int delta_disks, new_level, new_layout, new_chunk;
+
struct mdk_thread_s *thread; /* management thread */
struct mdk_thread_s *sync_thread; /* doing resync or reconstruct */
sector_t curr_resync; /* blocks scheduled */
sector_t resync_mismatches; /* count of sectors where
* parity/replica mismatch found
*/
+
+ /* allow user-space to request suspension of IO to regions of the array */
+ sector_t suspend_lo;
+ sector_t suspend_hi;
/* if zero, use the system-wide default */
int sync_speed_min;
int sync_speed_max;
* DONE: thread is done and is waiting to be reaped
* REQUEST: user-space has requested a sync (used with SYNC)
* CHECK: user-space request for for check-only, no repair
+ * RESHAPE: A reshape is happening
+ *
+ * If neither SYNC or RESHAPE are set, then it is a recovery.
*/
#define MD_RECOVERY_RUNNING 0
#define MD_RECOVERY_SYNC 1
#define MD_RECOVERY_NEEDED 5
#define MD_RECOVERY_REQUESTED 6
#define MD_RECOVERY_CHECK 7
+#define MD_RECOVERY_RESHAPE 8
unsigned long recovery;
int in_sync; /* know to not need resync */
- struct semaphore reconfig_sem;
+ struct mutex reconfig_mutex;
atomic_t active;
int changed; /* true if we might need to reread partition info */
int (*spare_active) (mddev_t *mddev);
sector_t (*sync_request)(mddev_t *mddev, sector_t sector_nr, int *skipped, int go_faster);
int (*resize) (mddev_t *mddev, sector_t sectors);
- int (*reshape) (mddev_t *mddev, int raid_disks);
+ int (*check_reshape) (mddev_t *mddev);
+ int (*start_reshape) (mddev_t *mddev);
int (*reconfig) (mddev_t *mddev, int layout, int chunk_size);
/* quiesce moves between quiescence states
* 0 - fully active
#define MD_SB_ERRORS 1
#define MD_SB_BITMAP_PRESENT 8 /* bitmap may be present nearby */
+
+/*
+ * Notes:
+ * - if an array is being reshaped (restriped) in order to change the
+ * the number of active devices in the array, 'raid_disks' will be
+ * the larger of the old and new numbers. 'delta_disks' will
+ * be the "new - old". So if +ve, raid_disks is the new value, and
+ * "raid_disks-delta_disks" is the old. If -ve, raid_disks is the
+ * old value and "raid_disks+delta_disks" is the new (smaller) value.
+ */
+
+
typedef struct mdp_superblock_s {
/*
* Constant generic information
__u32 cp_events_hi; /* 10 high-order of checkpoint update count */
#endif
__u32 recovery_cp; /* 11 recovery checkpoint sector count */
- __u32 gstate_sreserved[MD_SB_GENERIC_STATE_WORDS - 12];
+ /* There are only valid for minor_version > 90 */
+ __u64 reshape_position; /* 12,13 next address in array-space for reshape */
+ __u32 new_level; /* 14 new level we are reshaping to */
+ __u32 delta_disks; /* 15 change in number of raid_disks */
+ __u32 new_layout; /* 16 new layout */
+ __u32 new_chunk; /* 17 new chunk size (bytes) */
+ __u32 gstate_sreserved[MD_SB_GENERIC_STATE_WORDS - 18];
/*
* Personality information
* NOTE: signed, so bitmap can be before superblock
* only meaningful of feature_map[0] is set.
*/
- __u8 pad1[128-100]; /* set to 0 when written */
+
+ /* These are only valid with feature bit '4' */
+ __u64 reshape_position; /* next address in array-space for reshape */
+ __u32 new_level; /* new level we are reshaping to */
+ __u32 delta_disks; /* change in number of raid_disks */
+ __u32 new_layout; /* new layout */
+ __u32 new_chunk; /* new chunk size (bytes) */
+ __u8 pad1[128-124]; /* set to 0 when written */
/* constant this-device information - 64 bytes */
__u64 data_offset; /* sector start of data, often 0 */
/* feature_map bits */
#define MD_FEATURE_BITMAP_OFFSET 1
+#define MD_FEATURE_RESHAPE_ACTIVE 4
-#define MD_FEATURE_ALL 1
+#define MD_FEATURE_ALL 5
#endif
atomic_t count; /* nr of active thread/requests */
spinlock_t lock;
int bm_seq; /* sequence number for bitmap flushes */
+ int disks; /* disks in stripe */
struct r5dev {
struct bio req;
struct bio_vec vec;
#define R5_ReadError 8 /* seen a read error here recently */
#define R5_ReWrite 9 /* have tried to over-write the readerror */
+#define R5_Expanded 10 /* This block now has post-expand data */
/*
* Write method
*/
#define STRIPE_DELAYED 6
#define STRIPE_DEGRADED 7
#define STRIPE_BIT_DELAY 8
-
+#define STRIPE_EXPANDING 9
+#define STRIPE_EXPAND_SOURCE 10
+#define STRIPE_EXPAND_READY 11
/*
* Plugging:
*
int raid_disks, working_disks, failed_disks;
int max_nr_stripes;
+ /* used during an expand */
+ sector_t expand_progress; /* MaxSector when no expand happening */
+ sector_t expand_lo; /* from here up to expand_progress it out-of-bounds
+ * as we haven't flushed the metadata yet
+ */
+ int previous_raid_disks;
+
struct list_head handle_list; /* stripes needing handling */
struct list_head delayed_list; /* stripes that have plugged requests */
struct list_head bitmap_list; /* stripes delaying awaiting bitmap update */
atomic_t preread_active_stripes; /* stripes with scheduled io */
- char cache_name[20];
+ atomic_t reshape_stripes; /* stripes with pending writes for reshape */
+ /* unfortunately we need two cache names as we temporarily have
+ * two caches.
+ */
+ int active_name;
+ char cache_name[2][20];
kmem_cache_t *slab_cache; /* for allocating stripes */
int seq_flush, seq_write;
wait_queue_head_t wait_for_overlap;
int inactive_blocked; /* release of inactive stripes blocked,
* waiting for 25% to be free
- */
+ */
+ int pool_size; /* number of disks in stripeheads in pool */
spinlock_t device_lock;
- struct disk_info disks[0];
+ struct disk_info *disks;
};
typedef struct raid5_private_data raid5_conf_t;
extern int ramfs_nommu_mmap(struct file *file, struct vm_area_struct *vma);
#endif
-extern struct file_operations ramfs_file_operations;
+extern const struct file_operations ramfs_file_operations;
extern struct vm_operations_struct generic_file_vm_ops;
#endif
extern struct inode_operations reiserfs_dir_inode_operations;
extern struct inode_operations reiserfs_symlink_inode_operations;
extern struct inode_operations reiserfs_special_inode_operations;
-extern struct file_operations reiserfs_dir_operations;
+extern const struct file_operations reiserfs_dir_operations;
/* tail_conversion.c */
int direct2indirect(struct reiserfs_transaction_handle *, struct inode *,
/* file.c */
extern struct inode_operations reiserfs_file_inode_operations;
-extern struct file_operations reiserfs_file_operations;
+extern const struct file_operations reiserfs_file_operations;
extern struct address_space_operations reiserfs_address_space_operations;
/* fix_nodes.c */
+++ /dev/null
-/*
- * linux/include/linux/relayfs_fs.h
- *
- * Copyright (C) 2002, 2003 - Tom Zanussi (zanussi@us.ibm.com), IBM Corp
- * Copyright (C) 1999, 2000, 2001, 2002 - Karim Yaghmour (karim@opersys.com)
- *
- * RelayFS definitions and declarations
- */
-
-#ifndef _LINUX_RELAYFS_FS_H
-#define _LINUX_RELAYFS_FS_H
-
-#include <linux/config.h>
-#include <linux/types.h>
-#include <linux/sched.h>
-#include <linux/wait.h>
-#include <linux/list.h>
-#include <linux/fs.h>
-#include <linux/poll.h>
-#include <linux/kref.h>
-
-/*
- * Tracks changes to rchan/rchan_buf structs
- */
-#define RELAYFS_CHANNEL_VERSION 6
-
-/*
- * Per-cpu relay channel buffer
- */
-struct rchan_buf
-{
- void *start; /* start of channel buffer */
- void *data; /* start of current sub-buffer */
- size_t offset; /* current offset into sub-buffer */
- size_t subbufs_produced; /* count of sub-buffers produced */
- size_t subbufs_consumed; /* count of sub-buffers consumed */
- struct rchan *chan; /* associated channel */
- wait_queue_head_t read_wait; /* reader wait queue */
- struct work_struct wake_readers; /* reader wake-up work struct */
- struct dentry *dentry; /* channel file dentry */
- struct kref kref; /* channel buffer refcount */
- struct page **page_array; /* array of current buffer pages */
- unsigned int page_count; /* number of current buffer pages */
- unsigned int finalized; /* buffer has been finalized */
- size_t *padding; /* padding counts per sub-buffer */
- size_t prev_padding; /* temporary variable */
- size_t bytes_consumed; /* bytes consumed in cur read subbuf */
- unsigned int cpu; /* this buf's cpu */
-} ____cacheline_aligned;
-
-/*
- * Relay channel data structure
- */
-struct rchan
-{
- u32 version; /* the version of this struct */
- size_t subbuf_size; /* sub-buffer size */
- size_t n_subbufs; /* number of sub-buffers per buffer */
- size_t alloc_size; /* total buffer size allocated */
- struct rchan_callbacks *cb; /* client callbacks */
- struct kref kref; /* channel refcount */
- void *private_data; /* for user-defined data */
- size_t last_toobig; /* tried to log event > subbuf size */
- struct rchan_buf *buf[NR_CPUS]; /* per-cpu channel buffers */
-};
-
-/*
- * Relay channel client callbacks
- */
-struct rchan_callbacks
-{
- /*
- * subbuf_start - called on buffer-switch to a new sub-buffer
- * @buf: the channel buffer containing the new sub-buffer
- * @subbuf: the start of the new sub-buffer
- * @prev_subbuf: the start of the previous sub-buffer
- * @prev_padding: unused space at the end of previous sub-buffer
- *
- * The client should return 1 to continue logging, 0 to stop
- * logging.
- *
- * NOTE: subbuf_start will also be invoked when the buffer is
- * created, so that the first sub-buffer can be initialized
- * if necessary. In this case, prev_subbuf will be NULL.
- *
- * NOTE: the client can reserve bytes at the beginning of the new
- * sub-buffer by calling subbuf_start_reserve() in this callback.
- */
- int (*subbuf_start) (struct rchan_buf *buf,
- void *subbuf,
- void *prev_subbuf,
- size_t prev_padding);
-
- /*
- * buf_mapped - relayfs buffer mmap notification
- * @buf: the channel buffer
- * @filp: relayfs file pointer
- *
- * Called when a relayfs file is successfully mmapped
- */
- void (*buf_mapped)(struct rchan_buf *buf,
- struct file *filp);
-
- /*
- * buf_unmapped - relayfs buffer unmap notification
- * @buf: the channel buffer
- * @filp: relayfs file pointer
- *
- * Called when a relayfs file is successfully unmapped
- */
- void (*buf_unmapped)(struct rchan_buf *buf,
- struct file *filp);
- /*
- * create_buf_file - create file to represent a relayfs channel buffer
- * @filename: the name of the file to create
- * @parent: the parent of the file to create
- * @mode: the mode of the file to create
- * @buf: the channel buffer
- * @is_global: outparam - set non-zero if the buffer should be global
- *
- * Called during relay_open(), once for each per-cpu buffer,
- * to allow the client to create a file to be used to
- * represent the corresponding channel buffer. If the file is
- * created outside of relayfs, the parent must also exist in
- * that filesystem.
- *
- * The callback should return the dentry of the file created
- * to represent the relay buffer.
- *
- * Setting the is_global outparam to a non-zero value will
- * cause relay_open() to create a single global buffer rather
- * than the default set of per-cpu buffers.
- *
- * See Documentation/filesystems/relayfs.txt for more info.
- */
- struct dentry *(*create_buf_file)(const char *filename,
- struct dentry *parent,
- int mode,
- struct rchan_buf *buf,
- int *is_global);
-
- /*
- * remove_buf_file - remove file representing a relayfs channel buffer
- * @dentry: the dentry of the file to remove
- *
- * Called during relay_close(), once for each per-cpu buffer,
- * to allow the client to remove a file used to represent a
- * channel buffer.
- *
- * The callback should return 0 if successful, negative if not.
- */
- int (*remove_buf_file)(struct dentry *dentry);
-};
-
-/*
- * relayfs kernel API, fs/relayfs/relay.c
- */
-
-struct rchan *relay_open(const char *base_filename,
- struct dentry *parent,
- size_t subbuf_size,
- size_t n_subbufs,
- struct rchan_callbacks *cb);
-extern void relay_close(struct rchan *chan);
-extern void relay_flush(struct rchan *chan);
-extern void relay_subbufs_consumed(struct rchan *chan,
- unsigned int cpu,
- size_t consumed);
-extern void relay_reset(struct rchan *chan);
-extern int relay_buf_full(struct rchan_buf *buf);
-
-extern size_t relay_switch_subbuf(struct rchan_buf *buf,
- size_t length);
-extern struct dentry *relayfs_create_dir(const char *name,
- struct dentry *parent);
-extern int relayfs_remove_dir(struct dentry *dentry);
-extern struct dentry *relayfs_create_file(const char *name,
- struct dentry *parent,
- int mode,
- struct file_operations *fops,
- void *data);
-extern int relayfs_remove_file(struct dentry *dentry);
-
-/**
- * relay_write - write data into the channel
- * @chan: relay channel
- * @data: data to be written
- * @length: number of bytes to write
- *
- * Writes data into the current cpu's channel buffer.
- *
- * Protects the buffer by disabling interrupts. Use this
- * if you might be logging from interrupt context. Try
- * __relay_write() if you know you won't be logging from
- * interrupt context.
- */
-static inline void relay_write(struct rchan *chan,
- const void *data,
- size_t length)
-{
- unsigned long flags;
- struct rchan_buf *buf;
-
- local_irq_save(flags);
- buf = chan->buf[smp_processor_id()];
- if (unlikely(buf->offset + length > chan->subbuf_size))
- length = relay_switch_subbuf(buf, length);
- memcpy(buf->data + buf->offset, data, length);
- buf->offset += length;
- local_irq_restore(flags);
-}
-
-/**
- * __relay_write - write data into the channel
- * @chan: relay channel
- * @data: data to be written
- * @length: number of bytes to write
- *
- * Writes data into the current cpu's channel buffer.
- *
- * Protects the buffer by disabling preemption. Use
- * relay_write() if you might be logging from interrupt
- * context.
- */
-static inline void __relay_write(struct rchan *chan,
- const void *data,
- size_t length)
-{
- struct rchan_buf *buf;
-
- buf = chan->buf[get_cpu()];
- if (unlikely(buf->offset + length > buf->chan->subbuf_size))
- length = relay_switch_subbuf(buf, length);
- memcpy(buf->data + buf->offset, data, length);
- buf->offset += length;
- put_cpu();
-}
-
-/**
- * relay_reserve - reserve slot in channel buffer
- * @chan: relay channel
- * @length: number of bytes to reserve
- *
- * Returns pointer to reserved slot, NULL if full.
- *
- * Reserves a slot in the current cpu's channel buffer.
- * Does not protect the buffer at all - caller must provide
- * appropriate synchronization.
- */
-static inline void *relay_reserve(struct rchan *chan, size_t length)
-{
- void *reserved;
- struct rchan_buf *buf = chan->buf[smp_processor_id()];
-
- if (unlikely(buf->offset + length > buf->chan->subbuf_size)) {
- length = relay_switch_subbuf(buf, length);
- if (!length)
- return NULL;
- }
- reserved = buf->data + buf->offset;
- buf->offset += length;
-
- return reserved;
-}
-
-/**
- * subbuf_start_reserve - reserve bytes at the start of a sub-buffer
- * @buf: relay channel buffer
- * @length: number of bytes to reserve
- *
- * Helper function used to reserve bytes at the beginning of
- * a sub-buffer in the subbuf_start() callback.
- */
-static inline void subbuf_start_reserve(struct rchan_buf *buf,
- size_t length)
-{
- BUG_ON(length >= buf->chan->subbuf_size - 1);
- buf->offset = length;
-}
-
-/*
- * exported relay file operations, fs/relayfs/inode.c
- */
-extern struct file_operations relay_file_operations;
-
-#endif /* _LINUX_RELAYFS_FS_H */
-
#define RTC_PLL_GET _IOR('p', 0x11, struct rtc_pll_info) /* Get PLL correction */
#define RTC_PLL_SET _IOW('p', 0x12, struct rtc_pll_info) /* Set PLL correction */
+/* interrupt flags */
+#define RTC_IRQF 0x80 /* any of the following is active */
+#define RTC_PF 0x40
+#define RTC_AF 0x20
+#define RTC_UF 0x10
+
#ifdef __KERNEL__
#include <linux/interrupt.h>
+extern int rtc_month_days(unsigned int month, unsigned int year);
+extern int rtc_valid_tm(struct rtc_time *tm);
+extern int rtc_tm_to_time(struct rtc_time *tm, unsigned long *time);
+extern void rtc_time_to_tm(unsigned long time, struct rtc_time *tm);
+
+#include <linux/device.h>
+#include <linux/seq_file.h>
+#include <linux/cdev.h>
+#include <linux/poll.h>
+#include <linux/mutex.h>
+
+extern struct class *rtc_class;
+
+struct rtc_class_ops {
+ int (*open)(struct device *);
+ void (*release)(struct device *);
+ int (*ioctl)(struct device *, unsigned int, unsigned long);
+ int (*read_time)(struct device *, struct rtc_time *);
+ int (*set_time)(struct device *, struct rtc_time *);
+ int (*read_alarm)(struct device *, struct rtc_wkalrm *);
+ int (*set_alarm)(struct device *, struct rtc_wkalrm *);
+ int (*proc)(struct device *, struct seq_file *);
+ int (*set_mmss)(struct device *, unsigned long secs);
+ int (*irq_set_state)(struct device *, int enabled);
+ int (*irq_set_freq)(struct device *, int freq);
+ int (*read_callback)(struct device *, int data);
+};
+
+#define RTC_DEVICE_NAME_SIZE 20
+struct rtc_task;
+
+struct rtc_device
+{
+ struct class_device class_dev;
+ struct module *owner;
+
+ int id;
+ char name[RTC_DEVICE_NAME_SIZE];
+
+ struct rtc_class_ops *ops;
+ struct mutex ops_lock;
+
+ struct class_device *rtc_dev;
+ struct cdev char_dev;
+ struct mutex char_lock;
+
+ unsigned long irq_data;
+ spinlock_t irq_lock;
+ wait_queue_head_t irq_queue;
+ struct fasync_struct *async_queue;
+
+ struct rtc_task *irq_task;
+ spinlock_t irq_task_lock;
+ int irq_freq;
+};
+#define to_rtc_device(d) container_of(d, struct rtc_device, class_dev)
+
+extern struct rtc_device *rtc_device_register(const char *name,
+ struct device *dev,
+ struct rtc_class_ops *ops,
+ struct module *owner);
+extern void rtc_device_unregister(struct rtc_device *rdev);
+extern int rtc_interface_register(struct class_interface *intf);
+
+extern int rtc_read_time(struct class_device *class_dev, struct rtc_time *tm);
+extern int rtc_set_time(struct class_device *class_dev, struct rtc_time *tm);
+extern int rtc_set_mmss(struct class_device *class_dev, unsigned long secs);
+extern int rtc_read_alarm(struct class_device *class_dev,
+ struct rtc_wkalrm *alrm);
+extern int rtc_set_alarm(struct class_device *class_dev,
+ struct rtc_wkalrm *alrm);
+extern void rtc_update_irq(struct class_device *class_dev,
+ unsigned long num, unsigned long events);
+
+extern struct class_device *rtc_class_open(char *name);
+extern void rtc_class_close(struct class_device *class_dev);
+
+extern int rtc_irq_register(struct class_device *class_dev,
+ struct rtc_task *task);
+extern void rtc_irq_unregister(struct class_device *class_dev,
+ struct rtc_task *task);
+extern int rtc_irq_set_state(struct class_device *class_dev,
+ struct rtc_task *task, int enabled);
+extern int rtc_irq_set_freq(struct class_device *class_dev,
+ struct rtc_task *task, int freq);
+
typedef struct rtc_task {
void (*func)(void *private_data);
void *private_data;
#include <linux/topology.h>
#include <linux/seccomp.h>
#include <linux/rcupdate.h>
+#include <linux/futex.h>
#include <linux/auxvec.h> /* For AT_VECTOR_SIZE */
int cpuset_mems_generation;
int cpuset_mem_spread_rotor;
#endif
+ struct robust_list_head __user *robust_list;
+#ifdef CONFIG_COMPAT
+ struct compat_robust_list_head __user *compat_robust_list;
+#endif
+
atomic_t fs_excl; /* holding fs exclusive resources */
struct rcu_head rcu;
};
*/
struct device;
-extern int register_sound_special(struct file_operations *fops, int unit);
-extern int register_sound_special_device(struct file_operations *fops, int unit, struct device *dev);
-extern int register_sound_mixer(struct file_operations *fops, int dev);
-extern int register_sound_midi(struct file_operations *fops, int dev);
-extern int register_sound_dsp(struct file_operations *fops, int dev);
-extern int register_sound_synth(struct file_operations *fops, int dev);
+extern int register_sound_special(const struct file_operations *fops, int unit);
+extern int register_sound_special_device(const struct file_operations *fops, int unit, struct device *dev);
+extern int register_sound_mixer(const struct file_operations *fops, int dev);
+extern int register_sound_midi(const struct file_operations *fops, int dev);
+extern int register_sound_dsp(const struct file_operations *fops, int dev);
+extern int register_sound_synth(const struct file_operations *fops, int dev);
extern void unregister_sound_special(int unit);
extern void unregister_sound_mixer(int unit);
time_t last_refresh; /* If CACHE_PENDING, this is when upcall
* was sent, else this is when update was received
*/
- atomic_t refcnt;
+ struct kref ref;
unsigned long flags;
};
#define CACHE_VALID 0 /* Entry contains valid data */
atomic_t inuse; /* active user-space update or lookup */
char *name;
- void (*cache_put)(struct cache_head *,
- struct cache_detail*);
+ void (*cache_put)(struct kref *);
void (*cache_request)(struct cache_detail *cd,
struct cache_head *h,
struct cache_detail *cd,
struct cache_head *h);
+ struct cache_head * (*alloc)(void);
+ int (*match)(struct cache_head *orig, struct cache_head *new);
+ void (*init)(struct cache_head *orig, struct cache_head *new);
+ void (*update)(struct cache_head *orig, struct cache_head *new);
+
/* fields below this comment are for internal use
* and should not be touched by cache owners
*/
int too_many);
};
-/*
- * just like a template in C++, this macro does cache lookup
- * for us.
- * The function is passed some sort of HANDLE from which a cache_detail
- * structure can be determined (via SETUP, DETAIL), a template
- * cache entry (type RTN*), and a "set" flag. Using the HASHFN and the
- * TEST, the function will try to find a matching cache entry in the cache.
- * If "set" == 0 :
- * If an entry is found, it is returned
- * If no entry is found, a new non-VALID entry is created.
- * If "set" == 1 and INPLACE == 0 :
- * If no entry is found a new one is inserted with data from "template"
- * If a non-CACHE_VALID entry is found, it is updated from template using UPDATE
- * If a CACHE_VALID entry is found, a new entry is swapped in with data
- * from "template"
- * If set == 1, and INPLACE == 1 :
- * As above, except that if a CACHE_VALID entry is found, we UPDATE in place
- * instead of swapping in a new entry.
- *
- * If the passed handle has the CACHE_NEGATIVE flag set, then UPDATE is not
- * run but insteead CACHE_NEGATIVE is set in any new item.
- * In any case, the new entry is returned with a reference count.
- *
- *
- * RTN is a struct type for a cache entry
- * MEMBER is the member of the cache which is cache_head, which must be first
- * FNAME is the name for the function
- * ARGS are arguments to function and must contain RTN *item, int set. May
- * also contain something to be usedby SETUP or DETAIL to find cache_detail.
- * SETUP locates the cache detail and makes it available as...
- * DETAIL identifies the cache detail, possibly set up by SETUP
- * HASHFN returns a hash value of the cache entry "item"
- * TEST tests if "tmp" matches "item"
- * INIT copies key information from "item" to "new"
- * UPDATE copies content information from "item" to "tmp"
- * INPLACE is true if updates can happen inplace rather than allocating a new structure
- *
- * WARNING: any substantial changes to this must be reflected in
- * net/sunrpc/svcauth.c(auth_domain_lookup)
- * which is a similar routine that is open-coded.
- */
-#define DefineCacheLookup(RTN,MEMBER,FNAME,ARGS,SETUP,DETAIL,HASHFN,TEST,INIT,UPDATE,INPLACE) \
-RTN *FNAME ARGS \
-{ \
- RTN *tmp, *new=NULL; \
- struct cache_head **hp, **head; \
- SETUP; \
- head = &(DETAIL)->hash_table[HASHFN]; \
- retry: \
- if (set||new) write_lock(&(DETAIL)->hash_lock); \
- else read_lock(&(DETAIL)->hash_lock); \
- for(hp=head; *hp != NULL; hp = &tmp->MEMBER.next) { \
- tmp = container_of(*hp, RTN, MEMBER); \
- if (TEST) { /* found a match */ \
- \
- if (set && !INPLACE && test_bit(CACHE_VALID, &tmp->MEMBER.flags) && !new) \
- break; \
- \
- if (new) \
- {INIT;} \
- if (set) { \
- if (!INPLACE && test_bit(CACHE_VALID, &tmp->MEMBER.flags))\
- { /* need to swap in new */ \
- RTN *t2; \
- \
- new->MEMBER.next = tmp->MEMBER.next; \
- *hp = &new->MEMBER; \
- tmp->MEMBER.next = NULL; \
- t2 = tmp; tmp = new; new = t2; \
- } \
- if (test_bit(CACHE_NEGATIVE, &item->MEMBER.flags)) \
- set_bit(CACHE_NEGATIVE, &tmp->MEMBER.flags); \
- else { \
- UPDATE; \
- clear_bit(CACHE_NEGATIVE, &tmp->MEMBER.flags); \
- } \
- } \
- cache_get(&tmp->MEMBER); \
- if (set||new) write_unlock(&(DETAIL)->hash_lock); \
- else read_unlock(&(DETAIL)->hash_lock); \
- if (set) \
- cache_fresh(DETAIL, &tmp->MEMBER, item->MEMBER.expiry_time); \
- if (set && !INPLACE && new) cache_fresh(DETAIL, &new->MEMBER, 0); \
- if (new) (DETAIL)->cache_put(&new->MEMBER, DETAIL); \
- return tmp; \
- } \
- } \
- /* Didn't find anything */ \
- if (new) { \
- INIT; \
- new->MEMBER.next = *head; \
- *head = &new->MEMBER; \
- (DETAIL)->entries ++; \
- cache_get(&new->MEMBER); \
- if (set) { \
- tmp = new; \
- if (test_bit(CACHE_NEGATIVE, &item->MEMBER.flags)) \
- set_bit(CACHE_NEGATIVE, &tmp->MEMBER.flags); \
- else {UPDATE;} \
- } \
- } \
- if (set||new) write_unlock(&(DETAIL)->hash_lock); \
- else read_unlock(&(DETAIL)->hash_lock); \
- if (new && set) \
- cache_fresh(DETAIL, &new->MEMBER, item->MEMBER.expiry_time); \
- if (new) \
- return new; \
- new = kmalloc(sizeof(*new), GFP_KERNEL); \
- if (new) { \
- cache_init(&new->MEMBER); \
- goto retry; \
- } \
- return NULL; \
-}
+extern struct cache_head *
+sunrpc_cache_lookup(struct cache_detail *detail,
+ struct cache_head *key, int hash);
+extern struct cache_head *
+sunrpc_cache_update(struct cache_detail *detail,
+ struct cache_head *new, struct cache_head *old, int hash);
-#define DefineSimpleCacheLookup(STRUCT,INPLACE) \
- DefineCacheLookup(struct STRUCT, h, STRUCT##_lookup, (struct STRUCT *item, int set), /*no setup */, \
- & STRUCT##_cache, STRUCT##_hash(item), STRUCT##_match(item, tmp),\
- STRUCT##_init(new, item), STRUCT##_update(tmp, item),INPLACE)
#define cache_for_each(pos, detail, index, member) \
for (({read_lock(&(detail)->hash_lock); index = (detail)->hash_size;}) ; \
static inline struct cache_head *cache_get(struct cache_head *h)
{
- atomic_inc(&h->refcnt);
+ kref_get(&h->ref);
return h;
}
-static inline int cache_put(struct cache_head *h, struct cache_detail *cd)
+static inline void cache_put(struct cache_head *h, struct cache_detail *cd)
{
- if (atomic_read(&h->refcnt) <= 2 &&
+ if (atomic_read(&h->ref.refcount) <= 2 &&
h->expiry_time < cd->nextcheck)
cd->nextcheck = h->expiry_time;
- return atomic_dec_and_test(&h->refcnt);
+ kref_put(&h->ref, cd->cache_put);
}
-extern void cache_init(struct cache_head *h);
-extern void cache_fresh(struct cache_detail *detail,
- struct cache_head *head, time_t expiry);
extern int cache_check(struct cache_detail *detail,
struct cache_head *h, struct cache_req *rqstp);
extern void cache_flush(void);
void rpc_proc_unregister(const char *);
void rpc_proc_zero(struct rpc_program *);
struct proc_dir_entry * svc_proc_register(struct svc_stat *,
- struct file_operations *);
+ const struct file_operations *);
void svc_proc_unregister(const char *);
void svc_seq_show(struct seq_file *,
static inline void rpc_proc_zero(struct rpc_program *p) {}
static inline struct proc_dir_entry *svc_proc_register(struct svc_stat *s,
- struct file_operations *f) { return NULL; }
+ const struct file_operations *f) { return NULL; }
static inline void svc_proc_unregister(const char *p) {}
static inline void svc_seq_show(struct seq_file *seq,
* of ip addresses to the given client.
*/
struct auth_domain {
- struct cache_head h;
+ struct kref ref;
+ struct hlist_node hash;
char *name;
- int flavour;
+ struct auth_ops *flavour;
};
/*
*
* domain_release()
* This call releases a domain.
+ * set_client()
+ * Givens a pending request (struct svc_rqst), finds and assigns
+ * an appropriate 'auth_domain' as the client.
*/
struct auth_ops {
char * name;
extern struct auth_domain *unix_domain_find(char *name);
extern void auth_domain_put(struct auth_domain *item);
extern int auth_unix_add_addr(struct in_addr addr, struct auth_domain *dom);
-extern struct auth_domain *auth_domain_lookup(struct auth_domain *item, int set);
+extern struct auth_domain *auth_domain_lookup(char *name, struct auth_domain *new);
extern struct auth_domain *auth_domain_find(char *name);
extern struct auth_domain *auth_unix_lookup(struct in_addr addr);
extern int auth_unix_forget_old(struct auth_domain *dom);
return hash >> (BITS_PER_LONG - bits);
}
-extern struct cache_detail auth_domain_cache, ip_map_cache;
-
#endif /* __KERNEL__ */
#endif /* _LINUX_SUNRPC_SVCAUTH_H_ */
/*
* SyncLink Multiprotocol Serial Adapter Driver
*
- * $Id: synclink.h,v 3.10 2005/11/08 19:50:54 paulkf Exp $
+ * $Id: synclink.h,v 3.11 2006/02/06 21:20:29 paulkf Exp $
*
* Copyright (C) 1998-2000 by Microgate Corporation
*
__u32 rxidle;
};
+struct gpio_desc {
+ __u32 state;
+ __u32 smask;
+ __u32 dir;
+ __u32 dmask;
+};
#define DEBUG_LEVEL_DATA 1
#define DEBUG_LEVEL_ERROR 2
#define MGSL_IOCLOOPTXDONE _IO(MGSL_MAGIC_IOC,9)
#define MGSL_IOCSIF _IO(MGSL_MAGIC_IOC,10)
#define MGSL_IOCGIF _IO(MGSL_MAGIC_IOC,11)
+#define MGSL_IOCSGPIO _IOW(MGSL_MAGIC_IOC,16,struct gpio_desc)
+#define MGSL_IOCGGPIO _IOR(MGSL_MAGIC_IOC,17,struct gpio_desc)
+#define MGSL_IOCWAITGPIO _IOWR(MGSL_MAGIC_IOC,18,struct gpio_desc)
#endif /* _SYNCLINK_H_ */
#define PID_MAX_DEFAULT (CONFIG_BASE_SMALL ? 0x1000 : 0x8000)
/*
- * A maximum of 4 million PIDs should be enough for a while:
+ * A maximum of 4 million PIDs should be enough for a while.
+ * [NOTE: PID/TIDs are limited to 2^29 ~= 500+ million, see futex.h.]
*/
#define PID_MAX_LIMIT (CONFIG_BASE_SMALL ? PAGE_SIZE * 8 : \
(sizeof(long) > 4 ? 4 * 1024 * 1024 : PID_MAX_DEFAULT))
.nr_balance_failed = 0, \
}
+#ifdef CONFIG_SCHED_MC
+#ifndef SD_MC_INIT
+/* for now its same as SD_CPU_INIT.
+ * TBD: Tune Domain parameters!
+ */
+#define SD_MC_INIT SD_CPU_INIT
+#endif
+#endif
+
#ifdef CONFIG_NUMA
#ifndef SD_NODE_INIT
#error Please define an appropriate SD_NODE_INIT in include/asm/topology.h!!!
/* file.c */
extern struct inode_operations ufs_file_inode_operations;
-extern struct file_operations ufs_file_operations;
+extern const struct file_operations ufs_file_operations;
extern struct address_space_operations ufs_aops;
extern int ufs_getfrag_block (struct inode *inode, sector_t fragment, struct buffer_head *bh_result, int create);
/* namei.c */
-extern struct file_operations ufs_dir_operations;
+extern const struct file_operations ufs_dir_operations;
/* super.c */
extern void ufs_warning (struct super_block *, const char *, const char *, ...) __attribute__ ((format (printf, 3, 4)));
*/
struct usb_class_driver {
char *name;
- struct file_operations *fops;
+ const struct file_operations *fops;
int minor_base;
};
int minor;
/* device ops + callbacks */
- struct file_operations *fops;
+ const struct file_operations *fops;
void (*release)(struct video_device *vfd);
+++ /dev/null
-/*
- * x1205.h - defines for drivers/i2c/chips/x1205.c
- * Copyright 2004 Karen Spearel
- * Copyright 2005 Alessandro Zummo
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- */
-
-#ifndef __LINUX_X1205_H__
-#define __LINUX_X1205_H__
-
-/* commands */
-
-#define X1205_CMD_GETDATETIME 0
-#define X1205_CMD_SETTIME 1
-#define X1205_CMD_SETDATETIME 2
-#define X1205_CMD_GETALARM 3
-#define X1205_CMD_SETALARM 4
-#define X1205_CMD_GETDTRIM 5
-#define X1205_CMD_SETDTRIM 6
-#define X1205_CMD_GETATRIM 7
-#define X1205_CMD_SETATRIM 8
-
-extern int x1205_do_command(unsigned int cmd, void *arg);
-extern int x1205_direct_attach(int adapter_id,
- struct i2c_client_address_data *address_data);
-
-#endif /* __LINUX_X1205_H__ */
#define CONNTRACK_ECACHE(x) (__get_cpu_var(nf_conntrack_ecache).x)
-extern struct notifier_block *nf_conntrack_chain;
-extern struct notifier_block *nf_conntrack_expect_chain;
+extern struct atomic_notifier_head nf_conntrack_chain;
+extern struct atomic_notifier_head nf_conntrack_expect_chain;
static inline int nf_conntrack_register_notifier(struct notifier_block *nb)
{
- return notifier_chain_register(&nf_conntrack_chain, nb);
+ return atomic_notifier_chain_register(&nf_conntrack_chain, nb);
}
static inline int nf_conntrack_unregister_notifier(struct notifier_block *nb)
{
- return notifier_chain_unregister(&nf_conntrack_chain, nb);
+ return atomic_notifier_chain_unregister(&nf_conntrack_chain, nb);
}
static inline int
nf_conntrack_expect_register_notifier(struct notifier_block *nb)
{
- return notifier_chain_register(&nf_conntrack_expect_chain, nb);
+ return atomic_notifier_chain_register(&nf_conntrack_expect_chain, nb);
}
static inline int
nf_conntrack_expect_unregister_notifier(struct notifier_block *nb)
{
- return notifier_chain_unregister(&nf_conntrack_expect_chain, nb);
+ return atomic_notifier_chain_unregister(&nf_conntrack_expect_chain,
+ nb);
}
extern void nf_ct_deliver_cached_events(const struct nf_conn *ct);
struct nf_conn *ct)
{
if (nf_ct_is_confirmed(ct) && !nf_ct_is_dying(ct))
- notifier_call_chain(&nf_conntrack_chain, event, ct);
+ atomic_notifier_call_chain(&nf_conntrack_chain, event, ct);
}
static inline void
nf_conntrack_expect_event(enum ip_conntrack_expect_events event,
struct nf_conntrack_expect *exp)
{
- notifier_call_chain(&nf_conntrack_expect_chain, event, exp);
+ atomic_notifier_call_chain(&nf_conntrack_expect_chain, event, exp);
}
#else /* CONFIG_NF_CONNTRACK_EVENTS */
static inline void nf_conntrack_event_cache(enum ip_conntrack_events event,
{
struct request_sock *req = queue->rskq_accept_head;
- queue->rskq_accept_head = queue->rskq_accept_head = NULL;
+ queue->rskq_accept_head = NULL;
return req;
}
int type; /* SNDRV_DEVICE_TYPE_XXX */
int card; /* card number */
int device; /* device number */
- struct file_operations *f_ops; /* file operations */
+ const struct file_operations *f_ops; /* file operations */
void *private_data; /* private data for f_ops->open */
char name[0]; /* device name (keep at the end of
structure) */
void snd_request_card(int card);
int snd_register_device(int type, struct snd_card *card, int dev,
- struct file_operations *f_ops, void *private_data,
+ const struct file_operations *f_ops, void *private_data,
const char *name);
int snd_unregister_device(int type, struct snd_card *card, int dev);
void *snd_lookup_minor_data(unsigned int minor, int type);
#ifdef CONFIG_SND_OSSEMUL
int snd_register_oss_device(int type, struct snd_card *card, int dev,
- struct file_operations *f_ops, void *private_data,
+ const struct file_operations *f_ops, void *private_data,
const char *name);
int snd_unregister_oss_device(int type, struct snd_card *card, int dev);
void *snd_lookup_oss_minor_data(unsigned int minor, int type);
#endif
ptr = alloc_bootmem(size * nr_possible_cpus);
- for_each_cpu(i) {
+ for_each_possible_cpu(i) {
__per_cpu_offset[i] = ptr - __per_cpu_start;
memcpy(ptr, __per_cpu_start, __per_cpu_end - __per_cpu_start);
ptr += size;
* The receiver accepts the message and returns without grabbing the queue
* spinlock. Therefore an intermediate STATE_PENDING state and memory barriers
* are necessary. The same algorithm is used for sysv semaphores, see
- * ipc/sem.c fore more details.
+ * ipc/sem.c for more details.
*
* The same algorithm is used for senders.
*/
obj-$(CONFIG_DEBUG_MUTEXES) += mutex-debug.o
obj-$(CONFIG_FUTEX) += futex.o
+ifeq ($(CONFIG_COMPAT),y)
+obj-$(CONFIG_FUTEX) += futex_compat.o
+endif
obj-$(CONFIG_GENERIC_ISA_DMA) += dma.o
obj-$(CONFIG_SMP) += cpu.o spinlock.o
obj-$(CONFIG_DEBUG_SPINLOCK) += spinlock.o
#include <linux/time.h>
#include <linux/signal.h>
#include <linux/sched.h> /* for MAX_SCHEDULE_TIMEOUT */
-#include <linux/futex.h> /* for FUTEX_WAIT */
#include <linux/syscalls.h>
#include <linux/unistd.h>
#include <linux/security.h>
return ret;
}
-#ifdef CONFIG_FUTEX
-asmlinkage long compat_sys_futex(u32 __user *uaddr, int op, int val,
- struct compat_timespec __user *utime, u32 __user *uaddr2,
- int val3)
-{
- struct timespec t;
- unsigned long timeout = MAX_SCHEDULE_TIMEOUT;
- int val2 = 0;
-
- if ((op == FUTEX_WAIT) && utime) {
- if (get_compat_timespec(&t, utime))
- return -EFAULT;
- timeout = timespec_to_jiffies(&t) + 1;
- }
- if (op >= FUTEX_REQUEUE)
- val2 = (int) (unsigned long) utime;
-
- return do_futex((unsigned long)uaddr, op, val, timeout,
- (unsigned long)uaddr2, val2, val3);
-}
-#endif
-
asmlinkage long compat_sys_setrlimit(unsigned int resource,
struct compat_rlimit __user *rlim)
{
/* This protects CPUs going up and down... */
static DECLARE_MUTEX(cpucontrol);
-static struct notifier_block *cpu_chain;
+static BLOCKING_NOTIFIER_HEAD(cpu_chain);
#ifdef CONFIG_HOTPLUG_CPU
static struct task_struct *lock_cpu_hotplug_owner;
/* Need to know about CPUs going up/down? */
int register_cpu_notifier(struct notifier_block *nb)
{
- int ret;
-
- if ((ret = lock_cpu_hotplug_interruptible()) != 0)
- return ret;
- ret = notifier_chain_register(&cpu_chain, nb);
- unlock_cpu_hotplug();
- return ret;
+ return blocking_notifier_chain_register(&cpu_chain, nb);
}
EXPORT_SYMBOL(register_cpu_notifier);
void unregister_cpu_notifier(struct notifier_block *nb)
{
- lock_cpu_hotplug();
- notifier_chain_unregister(&cpu_chain, nb);
- unlock_cpu_hotplug();
+ blocking_notifier_chain_unregister(&cpu_chain, nb);
}
EXPORT_SYMBOL(unregister_cpu_notifier);
goto out;
}
- err = notifier_call_chain(&cpu_chain, CPU_DOWN_PREPARE,
+ err = blocking_notifier_call_chain(&cpu_chain, CPU_DOWN_PREPARE,
(void *)(long)cpu);
if (err == NOTIFY_BAD) {
printk("%s: attempt to take down CPU %u failed\n",
p = __stop_machine_run(take_cpu_down, NULL, cpu);
if (IS_ERR(p)) {
/* CPU didn't die: tell everyone. Can't complain. */
- if (notifier_call_chain(&cpu_chain, CPU_DOWN_FAILED,
+ if (blocking_notifier_call_chain(&cpu_chain, CPU_DOWN_FAILED,
(void *)(long)cpu) == NOTIFY_BAD)
BUG();
put_cpu();
/* CPU is completely dead: tell everyone. Too late to complain. */
- if (notifier_call_chain(&cpu_chain, CPU_DEAD, (void *)(long)cpu)
- == NOTIFY_BAD)
+ if (blocking_notifier_call_chain(&cpu_chain, CPU_DEAD,
+ (void *)(long)cpu) == NOTIFY_BAD)
BUG();
check_for_tasks(cpu);
goto out;
}
- ret = notifier_call_chain(&cpu_chain, CPU_UP_PREPARE, hcpu);
+ ret = blocking_notifier_call_chain(&cpu_chain, CPU_UP_PREPARE, hcpu);
if (ret == NOTIFY_BAD) {
printk("%s: attempt to bring up CPU %u failed\n",
__FUNCTION__, cpu);
BUG_ON(!cpu_online(cpu));
/* Now call notifier in preparation. */
- notifier_call_chain(&cpu_chain, CPU_ONLINE, hcpu);
+ blocking_notifier_call_chain(&cpu_chain, CPU_ONLINE, hcpu);
out_notify:
if (ret != 0)
- notifier_call_chain(&cpu_chain, CPU_UP_CANCELED, hcpu);
+ blocking_notifier_call_chain(&cpu_chain,
+ CPU_UP_CANCELED, hcpu);
out:
unlock_cpu_hotplug();
return ret;
#include <linux/signal.h>
#include <linux/cn_proc.h>
#include <linux/mutex.h>
+#include <linux/futex.h>
+#include <linux/compat.h>
#include <asm/uaccess.h>
#include <asm/unistd.h>
exit_itimers(tsk->signal);
acct_process(code);
}
+ if (unlikely(tsk->robust_list))
+ exit_robust_list(tsk);
+#ifdef CONFIG_COMPAT
+ if (unlikely(tsk->compat_robust_list))
+ compat_exit_robust_list(tsk);
+#endif
exit_mm(tsk);
exit_sem(tsk);
* Clear TID on mm_release()?
*/
p->clear_child_tid = (clone_flags & CLONE_CHILD_CLEARTID) ? child_tidptr: NULL;
-
+ p->robust_list = NULL;
+#ifdef CONFIG_COMPAT
+ p->compat_robust_list = NULL;
+#endif
/*
* sigaltstack should be cleared when sharing the same VM
*/
* Removed page pinning, fix privately mapped COW pages and other cleanups
* (C) Copyright 2003, 2004 Jamie Lokier
*
+ * Robust futex support started by Ingo Molnar
+ * (C) Copyright 2006 Red Hat Inc, All Rights Reserved
+ * Thanks to Thomas Gleixner for suggestions, analysis and fixes.
+ *
* Thanks to Ben LaHaise for yelling "hashed waitqueues" loudly
* enough at me, Linus for the original (flawed) idea, Matthew
* Kirkwood for proof-of-concept implementation.
goto out;
}
+/*
+ * Support for robust futexes: the kernel cleans up held futexes at
+ * thread exit time.
+ *
+ * Implementation: user-space maintains a per-thread list of locks it
+ * is holding. Upon do_exit(), the kernel carefully walks this list,
+ * and marks all locks that are owned by this thread with the
+ * FUTEX_OWNER_DEAD bit, and wakes up a waiter (if any). The list is
+ * always manipulated with the lock held, so the list is private and
+ * per-thread. Userspace also maintains a per-thread 'list_op_pending'
+ * field, to allow the kernel to clean up if the thread dies after
+ * acquiring the lock, but just before it could have added itself to
+ * the list. There can only be one such pending lock.
+ */
+
+/**
+ * sys_set_robust_list - set the robust-futex list head of a task
+ * @head: pointer to the list-head
+ * @len: length of the list-head, as userspace expects
+ */
+asmlinkage long
+sys_set_robust_list(struct robust_list_head __user *head,
+ size_t len)
+{
+ /*
+ * The kernel knows only one size for now:
+ */
+ if (unlikely(len != sizeof(*head)))
+ return -EINVAL;
+
+ current->robust_list = head;
+
+ return 0;
+}
+
+/**
+ * sys_get_robust_list - get the robust-futex list head of a task
+ * @pid: pid of the process [zero for current task]
+ * @head_ptr: pointer to a list-head pointer, the kernel fills it in
+ * @len_ptr: pointer to a length field, the kernel fills in the header size
+ */
+asmlinkage long
+sys_get_robust_list(int pid, struct robust_list_head __user **head_ptr,
+ size_t __user *len_ptr)
+{
+ struct robust_list_head *head;
+ unsigned long ret;
+
+ if (!pid)
+ head = current->robust_list;
+ else {
+ struct task_struct *p;
+
+ ret = -ESRCH;
+ read_lock(&tasklist_lock);
+ p = find_task_by_pid(pid);
+ if (!p)
+ goto err_unlock;
+ ret = -EPERM;
+ if ((current->euid != p->euid) && (current->euid != p->uid) &&
+ !capable(CAP_SYS_PTRACE))
+ goto err_unlock;
+ head = p->robust_list;
+ read_unlock(&tasklist_lock);
+ }
+
+ if (put_user(sizeof(*head), len_ptr))
+ return -EFAULT;
+ return put_user(head, head_ptr);
+
+err_unlock:
+ read_unlock(&tasklist_lock);
+
+ return ret;
+}
+
+/*
+ * Process a futex-list entry, check whether it's owned by the
+ * dying task, and do notification if so:
+ */
+int handle_futex_death(u32 __user *uaddr, struct task_struct *curr)
+{
+ u32 uval;
+
+retry:
+ if (get_user(uval, uaddr))
+ return -1;
+
+ if ((uval & FUTEX_TID_MASK) == curr->pid) {
+ /*
+ * Ok, this dying thread is truly holding a futex
+ * of interest. Set the OWNER_DIED bit atomically
+ * via cmpxchg, and if the value had FUTEX_WAITERS
+ * set, wake up a waiter (if any). (We have to do a
+ * futex_wake() even if OWNER_DIED is already set -
+ * to handle the rare but possible case of recursive
+ * thread-death.) The rest of the cleanup is done in
+ * userspace.
+ */
+ if (futex_atomic_cmpxchg_inatomic(uaddr, uval,
+ uval | FUTEX_OWNER_DIED) != uval)
+ goto retry;
+
+ if (uval & FUTEX_WAITERS)
+ futex_wake((unsigned long)uaddr, 1);
+ }
+ return 0;
+}
+
+/*
+ * Walk curr->robust_list (very carefully, it's a userspace list!)
+ * and mark any locks found there dead, and notify any waiters.
+ *
+ * We silently return on any sign of list-walking problem.
+ */
+void exit_robust_list(struct task_struct *curr)
+{
+ struct robust_list_head __user *head = curr->robust_list;
+ struct robust_list __user *entry, *pending;
+ unsigned int limit = ROBUST_LIST_LIMIT;
+ unsigned long futex_offset;
+
+ /*
+ * Fetch the list head (which was registered earlier, via
+ * sys_set_robust_list()):
+ */
+ if (get_user(entry, &head->list.next))
+ return;
+ /*
+ * Fetch the relative futex offset:
+ */
+ if (get_user(futex_offset, &head->futex_offset))
+ return;
+ /*
+ * Fetch any possibly pending lock-add first, and handle it
+ * if it exists:
+ */
+ if (get_user(pending, &head->list_op_pending))
+ return;
+ if (pending)
+ handle_futex_death((void *)pending + futex_offset, curr);
+
+ while (entry != &head->list) {
+ /*
+ * A pending lock might already be on the list, so
+ * dont process it twice:
+ */
+ if (entry != pending)
+ if (handle_futex_death((void *)entry + futex_offset,
+ curr))
+ return;
+ /*
+ * Fetch the next entry in the list:
+ */
+ if (get_user(entry, &entry->next))
+ return;
+ /*
+ * Avoid excessively long or circular lists:
+ */
+ if (!--limit)
+ break;
+
+ cond_resched();
+ }
+}
+
long do_futex(unsigned long uaddr, int op, int val, unsigned long timeout,
unsigned long uaddr2, int val2, int val3)
{
--- /dev/null
+/*
+ * linux/kernel/futex_compat.c
+ *
+ * Futex compatibililty routines.
+ *
+ * Copyright 2006, Red Hat, Inc., Ingo Molnar
+ */
+
+#include <linux/linkage.h>
+#include <linux/compat.h>
+#include <linux/futex.h>
+
+#include <asm/uaccess.h>
+
+/*
+ * Walk curr->robust_list (very carefully, it's a userspace list!)
+ * and mark any locks found there dead, and notify any waiters.
+ *
+ * We silently return on any sign of list-walking problem.
+ */
+void compat_exit_robust_list(struct task_struct *curr)
+{
+ struct compat_robust_list_head __user *head = curr->compat_robust_list;
+ struct robust_list __user *entry, *pending;
+ compat_uptr_t uentry, upending;
+ unsigned int limit = ROBUST_LIST_LIMIT;
+ compat_long_t futex_offset;
+
+ /*
+ * Fetch the list head (which was registered earlier, via
+ * sys_set_robust_list()):
+ */
+ if (get_user(uentry, &head->list.next))
+ return;
+ entry = compat_ptr(uentry);
+ /*
+ * Fetch the relative futex offset:
+ */
+ if (get_user(futex_offset, &head->futex_offset))
+ return;
+ /*
+ * Fetch any possibly pending lock-add first, and handle it
+ * if it exists:
+ */
+ if (get_user(upending, &head->list_op_pending))
+ return;
+ pending = compat_ptr(upending);
+ if (upending)
+ handle_futex_death((void *)pending + futex_offset, curr);
+
+ while (compat_ptr(uentry) != &head->list) {
+ /*
+ * A pending lock might already be on the list, so
+ * dont process it twice:
+ */
+ if (entry != pending)
+ if (handle_futex_death((void *)entry + futex_offset,
+ curr))
+ return;
+
+ /*
+ * Fetch the next entry in the list:
+ */
+ if (get_user(uentry, (compat_uptr_t *)&entry->next))
+ return;
+ entry = compat_ptr(uentry);
+ /*
+ * Avoid excessively long or circular lists:
+ */
+ if (!--limit)
+ break;
+
+ cond_resched();
+ }
+}
+
+asmlinkage long
+compat_sys_set_robust_list(struct compat_robust_list_head __user *head,
+ compat_size_t len)
+{
+ if (unlikely(len != sizeof(*head)))
+ return -EINVAL;
+
+ current->compat_robust_list = head;
+
+ return 0;
+}
+
+asmlinkage long
+compat_sys_get_robust_list(int pid, compat_uptr_t *head_ptr,
+ compat_size_t __user *len_ptr)
+{
+ struct compat_robust_list_head *head;
+ unsigned long ret;
+
+ if (!pid)
+ head = current->compat_robust_list;
+ else {
+ struct task_struct *p;
+
+ ret = -ESRCH;
+ read_lock(&tasklist_lock);
+ p = find_task_by_pid(pid);
+ if (!p)
+ goto err_unlock;
+ ret = -EPERM;
+ if ((current->euid != p->euid) && (current->euid != p->uid) &&
+ !capable(CAP_SYS_PTRACE))
+ goto err_unlock;
+ head = p->compat_robust_list;
+ read_unlock(&tasklist_lock);
+ }
+
+ if (put_user(sizeof(*head), len_ptr))
+ return -EFAULT;
+ return put_user(ptr_to_compat(head), head_ptr);
+
+err_unlock:
+ read_unlock(&tasklist_lock);
+
+ return ret;
+}
+
+asmlinkage long compat_sys_futex(u32 __user *uaddr, int op, u32 val,
+ struct compat_timespec __user *utime, u32 __user *uaddr2,
+ u32 val3)
+{
+ struct timespec t;
+ unsigned long timeout = MAX_SCHEDULE_TIMEOUT;
+ int val2 = 0;
+
+ if ((op == FUTEX_WAIT) && utime) {
+ if (get_compat_timespec(&t, utime))
+ return -EFAULT;
+ timeout = timespec_to_jiffies(&t) + 1;
+ }
+ if (op >= FUTEX_REQUEUE)
+ val2 = (int) (unsigned long) utime;
+
+ return do_futex((unsigned long)uaddr, op, val, timeout,
+ (unsigned long)uaddr2, val2, val3);
+}
static DEFINE_MUTEX(module_mutex);
static LIST_HEAD(modules);
-static DEFINE_MUTEX(notify_mutex);
-static struct notifier_block * module_notify_list;
+static BLOCKING_NOTIFIER_HEAD(module_notify_list);
int register_module_notifier(struct notifier_block * nb)
{
- int err;
- mutex_lock(¬ify_mutex);
- err = notifier_chain_register(&module_notify_list, nb);
- mutex_unlock(¬ify_mutex);
- return err;
+ return blocking_notifier_chain_register(&module_notify_list, nb);
}
EXPORT_SYMBOL(register_module_notifier);
int unregister_module_notifier(struct notifier_block * nb)
{
- int err;
- mutex_lock(¬ify_mutex);
- err = notifier_chain_unregister(&module_notify_list, nb);
- mutex_unlock(¬ify_mutex);
- return err;
+ return blocking_notifier_chain_unregister(&module_notify_list, nb);
}
EXPORT_SYMBOL(unregister_module_notifier);
#ifndef CONFIG_MODVERSIONS
#define symversion(base, idx) NULL
#else
-#define symversion(base, idx) ((base) ? ((base) + (idx)) : NULL)
+#define symversion(base, idx) ((base != NULL) ? ((base) + (idx)) : NULL)
#endif
/* lookup symbol in given range of kernel_symbols */
/* Drop lock so they can recurse */
mutex_unlock(&module_mutex);
- mutex_lock(¬ify_mutex);
- notifier_call_chain(&module_notify_list, MODULE_STATE_COMING, mod);
- mutex_unlock(¬ify_mutex);
+ blocking_notifier_call_chain(&module_notify_list,
+ MODULE_STATE_COMING, mod);
/* Start the module */
if (mod->init != NULL)
int panic_timeout;
EXPORT_SYMBOL(panic_timeout);
-struct notifier_block *panic_notifier_list;
+ATOMIC_NOTIFIER_HEAD(panic_notifier_list);
EXPORT_SYMBOL(panic_notifier_list);
smp_send_stop();
#endif
- notifier_call_chain(&panic_notifier_list, 0, buf);
+ atomic_notifier_call_chain(&panic_notifier_list, 0, buf);
if (!panic_blink)
panic_blink = no_blink;
#define DEBUGP(fmt, a...)
#endif
-static inline int dash2underscore(char c)
+static inline char dash2underscore(char c)
{
if (c == '-')
return '_';
#ifdef CONFIG_PROFILING
-static DECLARE_RWSEM(profile_rwsem);
-static DEFINE_RWLOCK(handoff_lock);
-static struct notifier_block * task_exit_notifier;
-static struct notifier_block * task_free_notifier;
-static struct notifier_block * munmap_notifier;
+static BLOCKING_NOTIFIER_HEAD(task_exit_notifier);
+static ATOMIC_NOTIFIER_HEAD(task_free_notifier);
+static BLOCKING_NOTIFIER_HEAD(munmap_notifier);
void profile_task_exit(struct task_struct * task)
{
- down_read(&profile_rwsem);
- notifier_call_chain(&task_exit_notifier, 0, task);
- up_read(&profile_rwsem);
+ blocking_notifier_call_chain(&task_exit_notifier, 0, task);
}
int profile_handoff_task(struct task_struct * task)
{
int ret;
- read_lock(&handoff_lock);
- ret = notifier_call_chain(&task_free_notifier, 0, task);
- read_unlock(&handoff_lock);
+ ret = atomic_notifier_call_chain(&task_free_notifier, 0, task);
return (ret == NOTIFY_OK) ? 1 : 0;
}
void profile_munmap(unsigned long addr)
{
- down_read(&profile_rwsem);
- notifier_call_chain(&munmap_notifier, 0, (void *)addr);
- up_read(&profile_rwsem);
+ blocking_notifier_call_chain(&munmap_notifier, 0, (void *)addr);
}
int task_handoff_register(struct notifier_block * n)
{
- int err = -EINVAL;
-
- write_lock(&handoff_lock);
- err = notifier_chain_register(&task_free_notifier, n);
- write_unlock(&handoff_lock);
- return err;
+ return atomic_notifier_chain_register(&task_free_notifier, n);
}
int task_handoff_unregister(struct notifier_block * n)
{
- int err = -EINVAL;
-
- write_lock(&handoff_lock);
- err = notifier_chain_unregister(&task_free_notifier, n);
- write_unlock(&handoff_lock);
- return err;
+ return atomic_notifier_chain_unregister(&task_free_notifier, n);
}
int profile_event_register(enum profile_type type, struct notifier_block * n)
{
int err = -EINVAL;
- down_write(&profile_rwsem);
-
switch (type) {
case PROFILE_TASK_EXIT:
- err = notifier_chain_register(&task_exit_notifier, n);
+ err = blocking_notifier_chain_register(
+ &task_exit_notifier, n);
break;
case PROFILE_MUNMAP:
- err = notifier_chain_register(&munmap_notifier, n);
+ err = blocking_notifier_chain_register(
+ &munmap_notifier, n);
break;
}
- up_write(&profile_rwsem);
-
return err;
}
{
int err = -EINVAL;
- down_write(&profile_rwsem);
-
switch (type) {
case PROFILE_TASK_EXIT:
- err = notifier_chain_unregister(&task_exit_notifier, n);
+ err = blocking_notifier_chain_unregister(
+ &task_exit_notifier, n);
break;
case PROFILE_MUNMAP:
- err = notifier_chain_unregister(&munmap_notifier, n);
+ err = blocking_notifier_chain_unregister(
+ &munmap_notifier, n);
break;
}
- up_write(&profile_rwsem);
return err;
}
long pipesummary[RCU_TORTURE_PIPE_LEN + 1] = { 0 };
long batchsummary[RCU_TORTURE_PIPE_LEN + 1] = { 0 };
- for_each_cpu(cpu) {
+ for_each_possible_cpu(cpu) {
for (i = 0; i < RCU_TORTURE_PIPE_LEN + 1; i++) {
pipesummary[i] += per_cpu(rcu_torture_count, cpu)[i];
batchsummary[i] += per_cpu(rcu_torture_batch, cpu)[i];
atomic_set(&n_rcu_torture_error, 0);
for (i = 0; i < RCU_TORTURE_PIPE_LEN + 1; i++)
atomic_set(&rcu_torture_wcount[i], 0);
- for_each_cpu(cpu) {
+ for_each_possible_cpu(cpu) {
for (i = 0; i < RCU_TORTURE_PIPE_LEN + 1; i++) {
per_cpu(rcu_torture_count, cpu)[i] = 0;
per_cpu(rcu_torture_batch, cpu)[i] = 0;
(v1) * (v2_max) / (v1_max)
#define DELTA(p) \
- (SCALE(TASK_NICE(p), 40, MAX_BONUS) + INTERACTIVE_DELTA)
+ (SCALE(TASK_NICE(p) + 20, 40, MAX_BONUS) - 20 * MAX_BONUS / 40 + \
+ INTERACTIVE_DELTA)
#define TASK_INTERACTIVE(p) \
((p)->prio <= (p)->static_prio - DELTA(p))
{
unsigned long i, sum = 0;
- for_each_cpu(i)
+ for_each_possible_cpu(i)
sum += cpu_rq(i)->nr_uninterruptible;
/*
{
unsigned long long i, sum = 0;
- for_each_cpu(i)
+ for_each_possible_cpu(i)
sum += cpu_rq(i)->nr_switches;
return sum;
{
unsigned long i, sum = 0;
- for_each_cpu(i)
+ for_each_possible_cpu(i)
sum += atomic_read(&cpu_rq(i)->nr_iowait);
return sum;
* schedule() atomically, we ignore that path for now.
* Otherwise, whine if we are scheduling when we should not be.
*/
- if (likely(!current->exit_state)) {
- if (unlikely(in_atomic())) {
- printk(KERN_ERR "BUG: scheduling while atomic: "
- "%s/0x%08x/%d\n",
- current->comm, preempt_count(), current->pid);
- dump_stack();
- }
+ if (unlikely(in_atomic() && !current->exit_state)) {
+ printk(KERN_ERR "BUG: scheduling while atomic: "
+ "%s/0x%08x/%d\n",
+ current->comm, preempt_count(), current->pid);
+ dump_stack();
}
profile_hit(SCHED_PROFILING, __builtin_return_address(0));
}
#endif
+#ifdef CONFIG_SCHED_MC
+static DEFINE_PER_CPU(struct sched_domain, core_domains);
+static struct sched_group sched_group_core[NR_CPUS];
+#endif
+
+#if defined(CONFIG_SCHED_MC) && defined(CONFIG_SCHED_SMT)
+static int cpu_to_core_group(int cpu)
+{
+ return first_cpu(cpu_sibling_map[cpu]);
+}
+#elif defined(CONFIG_SCHED_MC)
+static int cpu_to_core_group(int cpu)
+{
+ return cpu;
+}
+#endif
+
static DEFINE_PER_CPU(struct sched_domain, phys_domains);
static struct sched_group sched_group_phys[NR_CPUS];
static int cpu_to_phys_group(int cpu)
{
-#ifdef CONFIG_SCHED_SMT
+#if defined(CONFIG_SCHED_MC)
+ cpumask_t mask = cpu_coregroup_map(cpu);
+ return first_cpu(mask);
+#elif defined(CONFIG_SCHED_SMT)
return first_cpu(cpu_sibling_map[cpu]);
#else
return cpu;
{
return cpu_to_node(cpu);
}
+static void init_numa_sched_groups_power(struct sched_group *group_head)
+{
+ struct sched_group *sg = group_head;
+ int j;
+
+ if (!sg)
+ return;
+next_sg:
+ for_each_cpu_mask(j, sg->cpumask) {
+ struct sched_domain *sd;
+
+ sd = &per_cpu(phys_domains, j);
+ if (j != first_cpu(sd->groups->cpumask)) {
+ /*
+ * Only add "power" once for each
+ * physical package.
+ */
+ continue;
+ }
+
+ sg->cpu_power += sd->groups->cpu_power;
+ }
+ sg = sg->next;
+ if (sg != group_head)
+ goto next_sg;
+}
#endif
/*
sd->parent = p;
sd->groups = &sched_group_phys[group];
+#ifdef CONFIG_SCHED_MC
+ p = sd;
+ sd = &per_cpu(core_domains, i);
+ group = cpu_to_core_group(i);
+ *sd = SD_MC_INIT;
+ sd->span = cpu_coregroup_map(i);
+ cpus_and(sd->span, sd->span, *cpu_map);
+ sd->parent = p;
+ sd->groups = &sched_group_core[group];
+#endif
+
#ifdef CONFIG_SCHED_SMT
p = sd;
sd = &per_cpu(cpu_domains, i);
}
#endif
+#ifdef CONFIG_SCHED_MC
+ /* Set up multi-core groups */
+ for_each_cpu_mask(i, *cpu_map) {
+ cpumask_t this_core_map = cpu_coregroup_map(i);
+ cpus_and(this_core_map, this_core_map, *cpu_map);
+ if (i != first_cpu(this_core_map))
+ continue;
+ init_sched_build_groups(sched_group_core, this_core_map,
+ &cpu_to_core_group);
+ }
+#endif
+
+
/* Set up physical groups */
for (i = 0; i < MAX_NUMNODES; i++) {
cpumask_t nodemask = node_to_cpumask(i);
power = SCHED_LOAD_SCALE;
sd->groups->cpu_power = power;
#endif
+#ifdef CONFIG_SCHED_MC
+ sd = &per_cpu(core_domains, i);
+ power = SCHED_LOAD_SCALE + (cpus_weight(sd->groups->cpumask)-1)
+ * SCHED_LOAD_SCALE / 10;
+ sd->groups->cpu_power = power;
sd = &per_cpu(phys_domains, i);
+
+ /*
+ * This has to be < 2 * SCHED_LOAD_SCALE
+ * Lets keep it SCHED_LOAD_SCALE, so that
+ * while calculating NUMA group's cpu_power
+ * we can simply do
+ * numa_group->cpu_power += phys_group->cpu_power;
+ *
+ * See "only add power once for each physical pkg"
+ * comment below
+ */
+ sd->groups->cpu_power = SCHED_LOAD_SCALE;
+#else
+ sd = &per_cpu(phys_domains, i);
power = SCHED_LOAD_SCALE + SCHED_LOAD_SCALE *
(cpus_weight(sd->groups->cpumask)-1) / 10;
sd->groups->cpu_power = power;
-
-#ifdef CONFIG_NUMA
- sd = &per_cpu(allnodes_domains, i);
- if (sd->groups) {
- power = SCHED_LOAD_SCALE + SCHED_LOAD_SCALE *
- (cpus_weight(sd->groups->cpumask)-1) / 10;
- sd->groups->cpu_power = power;
- }
#endif
}
#ifdef CONFIG_NUMA
- for (i = 0; i < MAX_NUMNODES; i++) {
- struct sched_group *sg = sched_group_nodes[i];
- int j;
-
- if (sg == NULL)
- continue;
-next_sg:
- for_each_cpu_mask(j, sg->cpumask) {
- struct sched_domain *sd;
- int power;
-
- sd = &per_cpu(phys_domains, j);
- if (j != first_cpu(sd->groups->cpumask)) {
- /*
- * Only add "power" once for each
- * physical package.
- */
- continue;
- }
- power = SCHED_LOAD_SCALE + SCHED_LOAD_SCALE *
- (cpus_weight(sd->groups->cpumask)-1) / 10;
+ for (i = 0; i < MAX_NUMNODES; i++)
+ init_numa_sched_groups_power(sched_group_nodes[i]);
- sg->cpu_power += power;
- }
- sg = sg->next;
- if (sg != sched_group_nodes[i])
- goto next_sg;
- }
+ init_numa_sched_groups_power(sched_group_allnodes);
#endif
/* Attach the domains */
struct sched_domain *sd;
#ifdef CONFIG_SCHED_SMT
sd = &per_cpu(cpu_domains, i);
+#elif defined(CONFIG_SCHED_MC)
+ sd = &per_cpu(core_domains, i);
#else
sd = &per_cpu(phys_domains, i);
#endif
runqueue_t *rq;
int i, j, k;
- for_each_cpu(i) {
+ for_each_possible_cpu(i) {
prio_array_t *array;
rq = cpu_rq(i);
cpu_callback(&cpu_nfb, CPU_ONLINE, cpu);
register_cpu_notifier(&cpu_nfb);
- notifier_chain_register(&panic_notifier_list, &panic_block);
+ atomic_notifier_chain_register(&panic_notifier_list, &panic_block);
}
* and the like.
*/
-static struct notifier_block *reboot_notifier_list;
-static DEFINE_RWLOCK(notifier_lock);
+static BLOCKING_NOTIFIER_HEAD(reboot_notifier_list);
+
+/*
+ * Notifier chain core routines. The exported routines below
+ * are layered on top of these, with appropriate locking added.
+ */
+
+static int notifier_chain_register(struct notifier_block **nl,
+ struct notifier_block *n)
+{
+ while ((*nl) != NULL) {
+ if (n->priority > (*nl)->priority)
+ break;
+ nl = &((*nl)->next);
+ }
+ n->next = *nl;
+ rcu_assign_pointer(*nl, n);
+ return 0;
+}
+
+static int notifier_chain_unregister(struct notifier_block **nl,
+ struct notifier_block *n)
+{
+ while ((*nl) != NULL) {
+ if ((*nl) == n) {
+ rcu_assign_pointer(*nl, n->next);
+ return 0;
+ }
+ nl = &((*nl)->next);
+ }
+ return -ENOENT;
+}
+
+static int __kprobes notifier_call_chain(struct notifier_block **nl,
+ unsigned long val, void *v)
+{
+ int ret = NOTIFY_DONE;
+ struct notifier_block *nb;
+
+ nb = rcu_dereference(*nl);
+ while (nb) {
+ ret = nb->notifier_call(nb, val, v);
+ if ((ret & NOTIFY_STOP_MASK) == NOTIFY_STOP_MASK)
+ break;
+ nb = rcu_dereference(nb->next);
+ }
+ return ret;
+}
+
+/*
+ * Atomic notifier chain routines. Registration and unregistration
+ * use a mutex, and call_chain is synchronized by RCU (no locks).
+ */
/**
- * notifier_chain_register - Add notifier to a notifier chain
- * @list: Pointer to root list pointer
+ * atomic_notifier_chain_register - Add notifier to an atomic notifier chain
+ * @nh: Pointer to head of the atomic notifier chain
* @n: New entry in notifier chain
*
- * Adds a notifier to a notifier chain.
+ * Adds a notifier to an atomic notifier chain.
*
* Currently always returns zero.
*/
+
+int atomic_notifier_chain_register(struct atomic_notifier_head *nh,
+ struct notifier_block *n)
+{
+ unsigned long flags;
+ int ret;
+
+ spin_lock_irqsave(&nh->lock, flags);
+ ret = notifier_chain_register(&nh->head, n);
+ spin_unlock_irqrestore(&nh->lock, flags);
+ return ret;
+}
+
+EXPORT_SYMBOL_GPL(atomic_notifier_chain_register);
+
+/**
+ * atomic_notifier_chain_unregister - Remove notifier from an atomic notifier chain
+ * @nh: Pointer to head of the atomic notifier chain
+ * @n: Entry to remove from notifier chain
+ *
+ * Removes a notifier from an atomic notifier chain.
+ *
+ * Returns zero on success or %-ENOENT on failure.
+ */
+int atomic_notifier_chain_unregister(struct atomic_notifier_head *nh,
+ struct notifier_block *n)
+{
+ unsigned long flags;
+ int ret;
+
+ spin_lock_irqsave(&nh->lock, flags);
+ ret = notifier_chain_unregister(&nh->head, n);
+ spin_unlock_irqrestore(&nh->lock, flags);
+ synchronize_rcu();
+ return ret;
+}
+
+EXPORT_SYMBOL_GPL(atomic_notifier_chain_unregister);
+
+/**
+ * atomic_notifier_call_chain - Call functions in an atomic notifier chain
+ * @nh: Pointer to head of the atomic notifier chain
+ * @val: Value passed unmodified to notifier function
+ * @v: Pointer passed unmodified to notifier function
+ *
+ * Calls each function in a notifier chain in turn. The functions
+ * run in an atomic context, so they must not block.
+ * This routine uses RCU to synchronize with changes to the chain.
+ *
+ * If the return value of the notifier can be and'ed
+ * with %NOTIFY_STOP_MASK then atomic_notifier_call_chain
+ * will return immediately, with the return value of
+ * the notifier function which halted execution.
+ * Otherwise the return value is the return value
+ * of the last notifier function called.
+ */
-int notifier_chain_register(struct notifier_block **list, struct notifier_block *n)
+int atomic_notifier_call_chain(struct atomic_notifier_head *nh,
+ unsigned long val, void *v)
{
- write_lock(¬ifier_lock);
- while(*list)
- {
- if(n->priority > (*list)->priority)
- break;
- list= &((*list)->next);
- }
- n->next = *list;
- *list=n;
- write_unlock(¬ifier_lock);
- return 0;
+ int ret;
+
+ rcu_read_lock();
+ ret = notifier_call_chain(&nh->head, val, v);
+ rcu_read_unlock();
+ return ret;
}
-EXPORT_SYMBOL(notifier_chain_register);
+EXPORT_SYMBOL_GPL(atomic_notifier_call_chain);
+
+/*
+ * Blocking notifier chain routines. All access to the chain is
+ * synchronized by an rwsem.
+ */
/**
- * notifier_chain_unregister - Remove notifier from a notifier chain
- * @nl: Pointer to root list pointer
+ * blocking_notifier_chain_register - Add notifier to a blocking notifier chain
+ * @nh: Pointer to head of the blocking notifier chain
* @n: New entry in notifier chain
*
- * Removes a notifier from a notifier chain.
+ * Adds a notifier to a blocking notifier chain.
+ * Must be called in process context.
*
- * Returns zero on success, or %-ENOENT on failure.
+ * Currently always returns zero.
*/
-int notifier_chain_unregister(struct notifier_block **nl, struct notifier_block *n)
+int blocking_notifier_chain_register(struct blocking_notifier_head *nh,
+ struct notifier_block *n)
{
- write_lock(¬ifier_lock);
- while((*nl)!=NULL)
- {
- if((*nl)==n)
- {
- *nl=n->next;
- write_unlock(¬ifier_lock);
- return 0;
- }
- nl=&((*nl)->next);
- }
- write_unlock(¬ifier_lock);
- return -ENOENT;
+ int ret;
+
+ /*
+ * This code gets used during boot-up, when task switching is
+ * not yet working and interrupts must remain disabled. At
+ * such times we must not call down_write().
+ */
+ if (unlikely(system_state == SYSTEM_BOOTING))
+ return notifier_chain_register(&nh->head, n);
+
+ down_write(&nh->rwsem);
+ ret = notifier_chain_register(&nh->head, n);
+ up_write(&nh->rwsem);
+ return ret;
}
-EXPORT_SYMBOL(notifier_chain_unregister);
+EXPORT_SYMBOL_GPL(blocking_notifier_chain_register);
/**
- * notifier_call_chain - Call functions in a notifier chain
- * @n: Pointer to root pointer of notifier chain
+ * blocking_notifier_chain_unregister - Remove notifier from a blocking notifier chain
+ * @nh: Pointer to head of the blocking notifier chain
+ * @n: Entry to remove from notifier chain
+ *
+ * Removes a notifier from a blocking notifier chain.
+ * Must be called from process context.
+ *
+ * Returns zero on success or %-ENOENT on failure.
+ */
+int blocking_notifier_chain_unregister(struct blocking_notifier_head *nh,
+ struct notifier_block *n)
+{
+ int ret;
+
+ /*
+ * This code gets used during boot-up, when task switching is
+ * not yet working and interrupts must remain disabled. At
+ * such times we must not call down_write().
+ */
+ if (unlikely(system_state == SYSTEM_BOOTING))
+ return notifier_chain_unregister(&nh->head, n);
+
+ down_write(&nh->rwsem);
+ ret = notifier_chain_unregister(&nh->head, n);
+ up_write(&nh->rwsem);
+ return ret;
+}
+
+EXPORT_SYMBOL_GPL(blocking_notifier_chain_unregister);
+
+/**
+ * blocking_notifier_call_chain - Call functions in a blocking notifier chain
+ * @nh: Pointer to head of the blocking notifier chain
* @val: Value passed unmodified to notifier function
* @v: Pointer passed unmodified to notifier function
*
- * Calls each function in a notifier chain in turn.
+ * Calls each function in a notifier chain in turn. The functions
+ * run in a process context, so they are allowed to block.
*
- * If the return value of the notifier can be and'd
- * with %NOTIFY_STOP_MASK, then notifier_call_chain
+ * If the return value of the notifier can be and'ed
+ * with %NOTIFY_STOP_MASK then blocking_notifier_call_chain
* will return immediately, with the return value of
* the notifier function which halted execution.
- * Otherwise, the return value is the return value
+ * Otherwise the return value is the return value
* of the last notifier function called.
*/
-int __kprobes notifier_call_chain(struct notifier_block **n, unsigned long val, void *v)
+int blocking_notifier_call_chain(struct blocking_notifier_head *nh,
+ unsigned long val, void *v)
{
- int ret=NOTIFY_DONE;
- struct notifier_block *nb = *n;
+ int ret;
- while(nb)
- {
- ret=nb->notifier_call(nb,val,v);
- if(ret&NOTIFY_STOP_MASK)
- {
- return ret;
- }
- nb=nb->next;
- }
+ down_read(&nh->rwsem);
+ ret = notifier_call_chain(&nh->head, val, v);
+ up_read(&nh->rwsem);
return ret;
}
-EXPORT_SYMBOL(notifier_call_chain);
+EXPORT_SYMBOL_GPL(blocking_notifier_call_chain);
+
+/*
+ * Raw notifier chain routines. There is no protection;
+ * the caller must provide it. Use at your own risk!
+ */
+
+/**
+ * raw_notifier_chain_register - Add notifier to a raw notifier chain
+ * @nh: Pointer to head of the raw notifier chain
+ * @n: New entry in notifier chain
+ *
+ * Adds a notifier to a raw notifier chain.
+ * All locking must be provided by the caller.
+ *
+ * Currently always returns zero.
+ */
+
+int raw_notifier_chain_register(struct raw_notifier_head *nh,
+ struct notifier_block *n)
+{
+ return notifier_chain_register(&nh->head, n);
+}
+
+EXPORT_SYMBOL_GPL(raw_notifier_chain_register);
+
+/**
+ * raw_notifier_chain_unregister - Remove notifier from a raw notifier chain
+ * @nh: Pointer to head of the raw notifier chain
+ * @n: Entry to remove from notifier chain
+ *
+ * Removes a notifier from a raw notifier chain.
+ * All locking must be provided by the caller.
+ *
+ * Returns zero on success or %-ENOENT on failure.
+ */
+int raw_notifier_chain_unregister(struct raw_notifier_head *nh,
+ struct notifier_block *n)
+{
+ return notifier_chain_unregister(&nh->head, n);
+}
+
+EXPORT_SYMBOL_GPL(raw_notifier_chain_unregister);
+
+/**
+ * raw_notifier_call_chain - Call functions in a raw notifier chain
+ * @nh: Pointer to head of the raw notifier chain
+ * @val: Value passed unmodified to notifier function
+ * @v: Pointer passed unmodified to notifier function
+ *
+ * Calls each function in a notifier chain in turn. The functions
+ * run in an undefined context.
+ * All locking must be provided by the caller.
+ *
+ * If the return value of the notifier can be and'ed
+ * with %NOTIFY_STOP_MASK then raw_notifier_call_chain
+ * will return immediately, with the return value of
+ * the notifier function which halted execution.
+ * Otherwise the return value is the return value
+ * of the last notifier function called.
+ */
+
+int raw_notifier_call_chain(struct raw_notifier_head *nh,
+ unsigned long val, void *v)
+{
+ return notifier_call_chain(&nh->head, val, v);
+}
+
+EXPORT_SYMBOL_GPL(raw_notifier_call_chain);
/**
* register_reboot_notifier - Register function to be called at reboot time
* Registers a function with the list of functions
* to be called at reboot time.
*
- * Currently always returns zero, as notifier_chain_register
+ * Currently always returns zero, as blocking_notifier_chain_register
* always returns zero.
*/
int register_reboot_notifier(struct notifier_block * nb)
{
- return notifier_chain_register(&reboot_notifier_list, nb);
+ return blocking_notifier_chain_register(&reboot_notifier_list, nb);
}
EXPORT_SYMBOL(register_reboot_notifier);
int unregister_reboot_notifier(struct notifier_block * nb)
{
- return notifier_chain_unregister(&reboot_notifier_list, nb);
+ return blocking_notifier_chain_unregister(&reboot_notifier_list, nb);
}
EXPORT_SYMBOL(unregister_reboot_notifier);
void kernel_restart_prepare(char *cmd)
{
- notifier_call_chain(&reboot_notifier_list, SYS_RESTART, cmd);
+ blocking_notifier_call_chain(&reboot_notifier_list, SYS_RESTART, cmd);
system_state = SYSTEM_RESTART;
device_shutdown();
}
void kernel_shutdown_prepare(enum system_states state)
{
- notifier_call_chain(&reboot_notifier_list,
+ blocking_notifier_call_chain(&reboot_notifier_list,
(state == SYSTEM_HALT)?SYS_HALT:SYS_POWER_OFF, NULL);
system_state = state;
device_shutdown();
cond_syscall(sys_socketcall);
cond_syscall(sys_futex);
cond_syscall(compat_sys_futex);
+cond_syscall(sys_set_robust_list);
+cond_syscall(compat_sys_set_robust_list);
+cond_syscall(sys_get_robust_list);
+cond_syscall(compat_sys_get_robust_list);
cond_syscall(sys_epoll_create);
cond_syscall(sys_epoll_ctl);
cond_syscall(sys_epoll_wait);
config DEBUG_FS
bool "Debug Filesystem"
- depends on DEBUG_KERNEL && SYSFS
+ depends on SYSFS
help
debugfs is a virtual file system that kernel developers use to put
debugging files into. Enable this option to be able to read and
obj-y := bootmem.o filemap.o mempool.o oom_kill.o fadvise.o \
page_alloc.o page-writeback.o pdflush.o \
readahead.o swap.o truncate.o vmscan.o \
- prio_tree.o util.o $(mmu-y)
+ prio_tree.o util.o mmzone.o $(mmu-y)
obj-$(CONFIG_SWAP) += page_io.o swap_state.o swapfile.o thrash.o
obj-$(CONFIG_HUGETLBFS) += hugetlb.o
* dma_get_required_mask(), which uses
* it, can be an inline function */
+static LIST_HEAD(bdata_list);
#ifdef CONFIG_CRASH_DUMP
/*
* If we have booted due to a crash, max_pfn will be a very low value. We need
return mapsize;
}
+/*
+ * link bdata in order
+ */
+static void link_bootmem(bootmem_data_t *bdata)
+{
+ bootmem_data_t *ent;
+ if (list_empty(&bdata_list)) {
+ list_add(&bdata->list, &bdata_list);
+ return;
+ }
+ /* insert in order */
+ list_for_each_entry(ent, &bdata_list, list) {
+ if (bdata->node_boot_start < ent->node_boot_start) {
+ list_add_tail(&bdata->list, &ent->list);
+ return;
+ }
+ }
+ list_add_tail(&bdata->list, &bdata_list);
+ return;
+}
+
/*
* Called once to set up the allocator itself.
bootmem_data_t *bdata = pgdat->bdata;
unsigned long mapsize = ((end - start)+7)/8;
- pgdat->pgdat_next = pgdat_list;
- pgdat_list = pgdat;
-
mapsize = ALIGN(mapsize, sizeof(long));
bdata->node_bootmem_map = phys_to_virt(mapstart << PAGE_SHIFT);
bdata->node_boot_start = (start << PAGE_SHIFT);
bdata->node_low_pfn = end;
+ link_bootmem(bdata);
/*
* Initially all pages are reserved - setup_arch() has to
void * __init __alloc_bootmem(unsigned long size, unsigned long align, unsigned long goal)
{
- pg_data_t *pgdat = pgdat_list;
+ bootmem_data_t *bdata;
void *ptr;
- for_each_pgdat(pgdat)
- if ((ptr = __alloc_bootmem_core(pgdat->bdata, size,
- align, goal, 0)))
+ list_for_each_entry(bdata, &bdata_list, list)
+ if ((ptr = __alloc_bootmem_core(bdata, size, align, goal, 0)))
return(ptr);
/*
void * __init __alloc_bootmem_low(unsigned long size, unsigned long align, unsigned long goal)
{
- pg_data_t *pgdat = pgdat_list;
+ bootmem_data_t *bdata;
void *ptr;
- for_each_pgdat(pgdat)
- if ((ptr = __alloc_bootmem_core(pgdat->bdata, size,
+ list_for_each_entry(bdata, &bdata_list, list)
+ if ((ptr = __alloc_bootmem_core(bdata, size,
align, goal, LOW32LIMIT)))
return(ptr);
/*
* Check if this process has the right to modify the specified
* process. The right exists if the process has administrative
- * capabilities, superuser priviledges or the same
+ * capabilities, superuser privileges or the same
* userid as the target process.
*/
if ((current->euid != task->suid) && (current->euid != task->uid) &&
--- /dev/null
+/*
+ * linux/mm/mmzone.c
+ *
+ * management codes for pgdats and zones.
+ */
+
+
+#include <linux/config.h>
+#include <linux/stddef.h>
+#include <linux/mmzone.h>
+#include <linux/module.h>
+
+struct pglist_data *first_online_pgdat(void)
+{
+ return NODE_DATA(first_online_node);
+}
+
+EXPORT_SYMBOL(first_online_pgdat);
+
+struct pglist_data *next_online_pgdat(struct pglist_data *pgdat)
+{
+ int nid = next_online_node(pgdat->node_id);
+
+ if (nid == MAX_NUMNODES)
+ return NULL;
+ return NODE_DATA(nid);
+}
+EXPORT_SYMBOL(next_online_pgdat);
+
+
+/*
+ * next_zone - helper magic for for_each_zone()
+ */
+struct zone *next_zone(struct zone *zone)
+{
+ pg_data_t *pgdat = zone->zone_pgdat;
+
+ if (zone < pgdat->node_zones + MAX_NR_ZONES - 1)
+ zone++;
+ else {
+ pgdat = next_online_pgdat(pgdat);
+ if (pgdat)
+ zone = pgdat->node_zones;
+ else
+ zone = NULL;
+ }
+ return zone;
+}
+EXPORT_SYMBOL(next_zone);
+
EXPORT_SYMBOL(node_online_map);
nodemask_t node_possible_map __read_mostly = NODE_MASK_ALL;
EXPORT_SYMBOL(node_possible_map);
-struct pglist_data *pgdat_list __read_mostly;
unsigned long totalram_pages __read_mostly;
unsigned long totalhigh_pages __read_mostly;
long nr_swap_pages;
pg_data_t *pgdat;
unsigned int pages = 0;
- for_each_pgdat(pgdat)
+ for_each_online_pgdat(pgdat)
pages += pgdat->node_zones[ZONE_HIGHMEM].free_pages;
return pages;
*active = 0;
*inactive = 0;
*free = 0;
- for_each_pgdat(pgdat) {
+ for_each_online_pgdat(pgdat) {
unsigned long l, m, n;
__get_zone_counts(&l, &m, &n, pgdat);
*active += l;
zone_wait_table_init(zone, size);
pgdat->nr_zones = zone_idx(zone) + 1;
- zone->zone_mem_map = pfn_to_page(zone_start_pfn);
zone->zone_start_pfn = zone_start_pfn;
memmap_init(size, pgdat->node_id, zone_idx(zone), zone_start_pfn);
{
pg_data_t *pgdat;
loff_t node = *pos;
-
- for (pgdat = pgdat_list; pgdat && node; pgdat = pgdat->pgdat_next)
+ for (pgdat = first_online_pgdat();
+ pgdat && node;
+ pgdat = next_online_pgdat(pgdat))
--node;
return pgdat;
pg_data_t *pgdat = (pg_data_t *)arg;
(*pos)++;
- return pgdat->pgdat_next;
+ return next_online_pgdat(pgdat);
}
static void frag_stop(struct seq_file *m, void *arg)
struct pglist_data *pgdat;
int j, idx;
- for_each_pgdat(pgdat) {
+ for_each_online_pgdat(pgdat) {
for (j = 0; j < MAX_NR_ZONES; j++) {
struct zone *zone = pgdat->node_zones + j;
unsigned long present_pages = zone->present_pages;
return table;
}
+
+#ifdef CONFIG_OUT_OF_LINE_PFN_TO_PAGE
+/*
+ * pfn <-> page translation. out-of-line version.
+ * (see asm-generic/memory_model.h)
+ */
+#if defined(CONFIG_FLATMEM)
+struct page *pfn_to_page(unsigned long pfn)
+{
+ return mem_map + (pfn - ARCH_PFN_OFFSET);
+}
+unsigned long page_to_pfn(struct page *page)
+{
+ return (page - mem_map) + ARCH_PFN_OFFSET;
+}
+#elif defined(CONFIG_DISCONTIGMEM)
+struct page *pfn_to_page(unsigned long pfn)
+{
+ int nid = arch_pfn_to_nid(pfn);
+ return NODE_DATA(nid)->node_mem_map + arch_local_page_offset(pfn,nid);
+}
+unsigned long page_to_pfn(struct page *page)
+{
+ struct pglist_data *pgdat = NODE_DATA(page_to_nid(page));
+ return (page - pgdat->node_mem_map) + pgdat->node_start_pfn;
+}
+#elif defined(CONFIG_SPARSEMEM)
+struct page *pfn_to_page(unsigned long pfn)
+{
+ return __section_mem_map_addr(__pfn_to_section(pfn)) + pfn;
+}
+
+unsigned long page_to_pfn(struct page *page)
+{
+ long section_id = page_to_section(page);
+ return page - __section_mem_map_addr(__nr_to_section(section_id));
+}
+#endif /* CONFIG_FLATMEM/DISCONTIGMME/SPARSEMEM */
+EXPORT_SYMBOL(pfn_to_page);
+EXPORT_SYMBOL(page_to_pfn);
+#endif /* CONFIG_OUT_OF_LINE_PFN_TO_PAGE */
* and we have no way of figuring out how to fix the array
* that we have allocated then....
*/
- for_each_cpu(i) {
+ for_each_possible_cpu(i) {
int node = cpu_to_node(i);
if (node_online(node))
/*
* We allocate for all cpus so we cannot use for online cpu here.
*/
- for_each_cpu(i)
+ for_each_possible_cpu(i)
kfree(p->ptrs[i]);
kfree(p);
}
spin_lock(&fbc->lock);
ret = fbc->count;
- for_each_cpu(cpu) {
+ for_each_possible_cpu(cpu) {
long *pcount = per_cpu_ptr(fbc->counters, cpu);
ret += *pcount;
}
current->reclaim_state = &reclaim_state;
repeat:
- for_each_pgdat(pgdat) {
+ for_each_online_pgdat(pgdat) {
unsigned long freed;
freed = balance_pgdat(pgdat, nr_to_free, 0);
cpumask_t mask;
if (action == CPU_ONLINE) {
- for_each_pgdat(pgdat) {
+ for_each_online_pgdat(pgdat) {
mask = node_to_cpumask(pgdat->node_id);
if (any_online_cpu(mask) != NR_CPUS)
/* One of our CPUs online: restore mask */
pg_data_t *pgdat;
swap_setup();
- for_each_pgdat(pgdat) {
+ for_each_online_pgdat(pgdat) {
pid_t pid;
pid = kernel_thread(kswapd, pgdat, CLONE_KERNEL);
struct hci_proto *hci_proto[HCI_MAX_PROTO];
/* HCI notifiers list */
-static struct notifier_block *hci_notifier;
+static ATOMIC_NOTIFIER_HEAD(hci_notifier);
/* ---- HCI notifications ---- */
int hci_register_notifier(struct notifier_block *nb)
{
- return notifier_chain_register(&hci_notifier, nb);
+ return atomic_notifier_chain_register(&hci_notifier, nb);
}
int hci_unregister_notifier(struct notifier_block *nb)
{
- return notifier_chain_unregister(&hci_notifier, nb);
+ return atomic_notifier_chain_unregister(&hci_notifier, nb);
}
static void hci_notify(struct hci_dev *hdev, int event)
{
- notifier_call_chain(&hci_notifier, event, hdev);
+ atomic_notifier_call_chain(&hci_notifier, event, hdev);
}
/* ---- HCI requests ---- */
* Our notifier list
*/
-static struct notifier_block *netdev_chain;
+static BLOCKING_NOTIFIER_HEAD(netdev_chain);
/*
* Device drivers call our routines to queue packets here. We empty the
if (!err) {
hlist_del(&dev->name_hlist);
hlist_add_head(&dev->name_hlist, dev_name_hash(dev->name));
- notifier_call_chain(&netdev_chain, NETDEV_CHANGENAME, dev);
+ blocking_notifier_call_chain(&netdev_chain,
+ NETDEV_CHANGENAME, dev);
}
return err;
*/
void netdev_features_change(struct net_device *dev)
{
- notifier_call_chain(&netdev_chain, NETDEV_FEAT_CHANGE, dev);
+ blocking_notifier_call_chain(&netdev_chain, NETDEV_FEAT_CHANGE, dev);
}
EXPORT_SYMBOL(netdev_features_change);
void netdev_state_change(struct net_device *dev)
{
if (dev->flags & IFF_UP) {
- notifier_call_chain(&netdev_chain, NETDEV_CHANGE, dev);
+ blocking_notifier_call_chain(&netdev_chain,
+ NETDEV_CHANGE, dev);
rtmsg_ifinfo(RTM_NEWLINK, dev, 0);
}
}
/*
* ... and announce new interface.
*/
- notifier_call_chain(&netdev_chain, NETDEV_UP, dev);
+ blocking_notifier_call_chain(&netdev_chain, NETDEV_UP, dev);
}
return ret;
}
* Tell people we are going down, so that they can
* prepare to death, when device is still operating.
*/
- notifier_call_chain(&netdev_chain, NETDEV_GOING_DOWN, dev);
+ blocking_notifier_call_chain(&netdev_chain, NETDEV_GOING_DOWN, dev);
dev_deactivate(dev);
/*
* Tell people we are down
*/
- notifier_call_chain(&netdev_chain, NETDEV_DOWN, dev);
+ blocking_notifier_call_chain(&netdev_chain, NETDEV_DOWN, dev);
return 0;
}
int err;
rtnl_lock();
- err = notifier_chain_register(&netdev_chain, nb);
+ err = blocking_notifier_chain_register(&netdev_chain, nb);
if (!err) {
for (dev = dev_base; dev; dev = dev->next) {
nb->notifier_call(nb, NETDEV_REGISTER, dev);
int err;
rtnl_lock();
- err = notifier_chain_unregister(&netdev_chain, nb);
+ err = blocking_notifier_chain_unregister(&netdev_chain, nb);
rtnl_unlock();
return err;
}
* @v: pointer passed unmodified to notifier function
*
* Call all network notifier blocks. Parameters and return value
- * are as for notifier_call_chain().
+ * are as for blocking_notifier_call_chain().
*/
int call_netdevice_notifiers(unsigned long val, void *v)
{
- return notifier_call_chain(&netdev_chain, val, v);
+ return blocking_notifier_call_chain(&netdev_chain, val, v);
}
/* When > 0 there are consumers of rx skb time stamps */
if (dev->flags & IFF_UP &&
((old_flags ^ dev->flags) &~ (IFF_UP | IFF_PROMISC | IFF_ALLMULTI |
IFF_VOLATILE)))
- notifier_call_chain(&netdev_chain, NETDEV_CHANGE, dev);
+ blocking_notifier_call_chain(&netdev_chain,
+ NETDEV_CHANGE, dev);
if ((flags ^ dev->gflags) & IFF_PROMISC) {
int inc = (flags & IFF_PROMISC) ? +1 : -1;
else
dev->mtu = new_mtu;
if (!err && dev->flags & IFF_UP)
- notifier_call_chain(&netdev_chain,
- NETDEV_CHANGEMTU, dev);
+ blocking_notifier_call_chain(&netdev_chain,
+ NETDEV_CHANGEMTU, dev);
return err;
}
return -ENODEV;
err = dev->set_mac_address(dev, sa);
if (!err)
- notifier_call_chain(&netdev_chain, NETDEV_CHANGEADDR, dev);
+ blocking_notifier_call_chain(&netdev_chain,
+ NETDEV_CHANGEADDR, dev);
return err;
}
return -EINVAL;
memcpy(dev->broadcast, ifr->ifr_hwaddr.sa_data,
min(sizeof ifr->ifr_hwaddr.sa_data, (size_t) dev->addr_len));
- notifier_call_chain(&netdev_chain,
+ blocking_notifier_call_chain(&netdev_chain,
NETDEV_CHANGEADDR, dev);
return 0;
write_unlock_bh(&dev_base_lock);
/* Notify protocols, that a new device appeared. */
- notifier_call_chain(&netdev_chain, NETDEV_REGISTER, dev);
+ blocking_notifier_call_chain(&netdev_chain, NETDEV_REGISTER, dev);
/* Finish registration after unlock */
net_set_todo(dev);
rtnl_lock();
/* Rebroadcast unregister notification */
- notifier_call_chain(&netdev_chain,
+ blocking_notifier_call_chain(&netdev_chain,
NETDEV_UNREGISTER, dev);
if (test_bit(__LINK_STATE_LINKWATCH_PENDING,
/* Notify protocols, that we are about to destroy
this device. They should clean all the things.
*/
- notifier_call_chain(&netdev_chain, NETDEV_UNREGISTER, dev);
+ blocking_notifier_call_chain(&netdev_chain, NETDEV_UNREGISTER, dev);
/*
* Flush the multicast chain
get_random_bytes(&lopt->hash_rnd, sizeof(lopt->hash_rnd));
rwlock_init(&queue->syn_wait_lock);
- queue->rskq_accept_head = queue->rskq_accept_head = NULL;
+ queue->rskq_accept_head = NULL;
lopt->nr_table_entries = nr_table_entries;
write_lock_bh(&queue->syn_wait_lock);
static DEFINE_RWLOCK(dndev_lock);
static struct net_device *decnet_default_device;
-static struct notifier_block *dnaddr_chain;
+static BLOCKING_NOTIFIER_HEAD(dnaddr_chain);
static struct dn_dev *dn_dev_create(struct net_device *dev, int *err);
static void dn_dev_delete(struct net_device *dev);
}
rtmsg_ifa(RTM_DELADDR, ifa1);
- notifier_call_chain(&dnaddr_chain, NETDEV_DOWN, ifa1);
+ blocking_notifier_call_chain(&dnaddr_chain, NETDEV_DOWN, ifa1);
if (destroy) {
dn_dev_free_ifa(ifa1);
dn_db->ifa_list = ifa;
rtmsg_ifa(RTM_NEWADDR, ifa);
- notifier_call_chain(&dnaddr_chain, NETDEV_UP, ifa);
+ blocking_notifier_call_chain(&dnaddr_chain, NETDEV_UP, ifa);
return 0;
}
int register_dnaddr_notifier(struct notifier_block *nb)
{
- return notifier_chain_register(&dnaddr_chain, nb);
+ return blocking_notifier_chain_register(&dnaddr_chain, nb);
}
int unregister_dnaddr_notifier(struct notifier_block *nb)
{
- return notifier_chain_unregister(&dnaddr_chain, nb);
+ return blocking_notifier_chain_unregister(&dnaddr_chain, nb);
}
#ifdef CONFIG_PROC_FS
static void rtmsg_ifa(int event, struct in_ifaddr *);
-static struct notifier_block *inetaddr_chain;
+static BLOCKING_NOTIFIER_HEAD(inetaddr_chain);
static void inet_del_ifa(struct in_device *in_dev, struct in_ifaddr **ifap,
int destroy);
#ifdef CONFIG_SYSCTL
*ifap1 = ifa->ifa_next;
rtmsg_ifa(RTM_DELADDR, ifa);
- notifier_call_chain(&inetaddr_chain, NETDEV_DOWN, ifa);
+ blocking_notifier_call_chain(&inetaddr_chain,
+ NETDEV_DOWN, ifa);
inet_free_ifa(ifa);
} else {
promote = ifa;
So that, this order is correct.
*/
rtmsg_ifa(RTM_DELADDR, ifa1);
- notifier_call_chain(&inetaddr_chain, NETDEV_DOWN, ifa1);
+ blocking_notifier_call_chain(&inetaddr_chain, NETDEV_DOWN, ifa1);
if (promote) {
promote->ifa_flags &= ~IFA_F_SECONDARY;
rtmsg_ifa(RTM_NEWADDR, promote);
- notifier_call_chain(&inetaddr_chain, NETDEV_UP, promote);
+ blocking_notifier_call_chain(&inetaddr_chain,
+ NETDEV_UP, promote);
for (ifa = promote->ifa_next; ifa; ifa = ifa->ifa_next) {
if (ifa1->ifa_mask != ifa->ifa_mask ||
!inet_ifa_match(ifa1->ifa_address, ifa))
Notifier will trigger FIB update, so that
listeners of netlink will know about new ifaddr */
rtmsg_ifa(RTM_NEWADDR, ifa);
- notifier_call_chain(&inetaddr_chain, NETDEV_UP, ifa);
+ blocking_notifier_call_chain(&inetaddr_chain, NETDEV_UP, ifa);
return 0;
}
int register_inetaddr_notifier(struct notifier_block *nb)
{
- return notifier_chain_register(&inetaddr_chain, nb);
+ return blocking_notifier_chain_register(&inetaddr_chain, nb);
}
int unregister_inetaddr_notifier(struct notifier_block *nb)
{
- return notifier_chain_unregister(&inetaddr_chain, nb);
+ return blocking_notifier_chain_unregister(&inetaddr_chain, nb);
}
/* Rename ifa_labels for a device name change. Make some effort to preserve existing
static unsigned int ip_conntrack_next_id;
static unsigned int ip_conntrack_expect_next_id;
#ifdef CONFIG_IP_NF_CONNTRACK_EVENTS
-struct notifier_block *ip_conntrack_chain;
-struct notifier_block *ip_conntrack_expect_chain;
+ATOMIC_NOTIFIER_HEAD(ip_conntrack_chain);
+ATOMIC_NOTIFIER_HEAD(ip_conntrack_expect_chain);
DEFINE_PER_CPU(struct ip_conntrack_ecache, ip_conntrack_ecache);
{
DEBUGP("ecache: delivering events for %p\n", ecache->ct);
if (is_confirmed(ecache->ct) && !is_dying(ecache->ct) && ecache->events)
- notifier_call_chain(&ip_conntrack_chain, ecache->events,
+ atomic_notifier_call_chain(&ip_conntrack_chain, ecache->events,
ecache->ct);
ecache->events = 0;
ip_conntrack_put(ecache->ct);
struct prefix_info *pinfo);
static int ipv6_chk_same_addr(const struct in6_addr *addr, struct net_device *dev);
-static struct notifier_block *inet6addr_chain;
+static ATOMIC_NOTIFIER_HEAD(inet6addr_chain);
struct ipv6_devconf ipv6_devconf = {
.forwarding = 0,
read_unlock_bh(&addrconf_lock);
if (likely(err == 0))
- notifier_call_chain(&inet6addr_chain, NETDEV_UP, ifa);
+ atomic_notifier_call_chain(&inet6addr_chain, NETDEV_UP, ifa);
else {
kfree(ifa);
ifa = ERR_PTR(err);
ipv6_ifa_notify(RTM_DELADDR, ifp);
- notifier_call_chain(&inet6addr_chain,NETDEV_DOWN,ifp);
+ atomic_notifier_call_chain(&inet6addr_chain, NETDEV_DOWN, ifp);
addrconf_del_timer(ifp);
int register_inet6addr_notifier(struct notifier_block *nb)
{
- return notifier_chain_register(&inet6addr_chain, nb);
+ return atomic_notifier_chain_register(&inet6addr_chain, nb);
}
int unregister_inet6addr_notifier(struct notifier_block *nb)
{
- return notifier_chain_unregister(&inet6addr_chain,nb);
+ return atomic_notifier_chain_unregister(&inet6addr_chain,nb);
}
/*
t->id.proto = IPPROTO_IPV6;
t->id.spi = xfrm6_tunnel_alloc_spi((xfrm_address_t *)&x->props.saddr);
+ if (!t->id.spi)
+ goto error;
+
memcpy(t->id.daddr.a6, x->id.daddr.a6, sizeof(struct in6_addr));
memcpy(&t->sel, &x->sel, sizeof(t->sel));
t->props.family = AF_INET6;
return t;
error:
+ t->km.state = XFRM_STATE_DEAD;
xfrm_state_put(t);
+ t = NULL;
goto out;
}
if (sk->sk_state != TCP_ESTABLISHED)
return -ENOTCONN;
- /* Check that we don't send out to big frames */
+ /* Check that we don't send out too big frames */
if (len > self->max_data_size) {
IRDA_DEBUG(2, "%s(), Chopping frame from %zd to %d bytes!\n",
__FUNCTION__, len, self->max_data_size);
IRDA_ASSERT(self != NULL, return -1;);
/*
- * Check that we don't send out to big frames. This is an unreliable
+ * Check that we don't send out too big frames. This is an unreliable
* service, so we have no fragmentation and no coalescence
*/
if (len > self->max_data_size) {
}
/*
- * Check that we don't send out to big frames. This is an unreliable
+ * Check that we don't send out too big frames. This is an unreliable
* service, so we have no fragmentation and no coalescence
*/
if (len > self->max_data_size) {
static unsigned int nf_conntrack_next_id;
static unsigned int nf_conntrack_expect_next_id;
#ifdef CONFIG_NF_CONNTRACK_EVENTS
-struct notifier_block *nf_conntrack_chain;
-struct notifier_block *nf_conntrack_expect_chain;
+ATOMIC_NOTIFIER_HEAD(nf_conntrack_chain);
+ATOMIC_NOTIFIER_HEAD(nf_conntrack_expect_chain);
DEFINE_PER_CPU(struct nf_conntrack_ecache, nf_conntrack_ecache);
DEBUGP("ecache: delivering events for %p\n", ecache->ct);
if (nf_ct_is_confirmed(ecache->ct) && !nf_ct_is_dying(ecache->ct)
&& ecache->events)
- notifier_call_chain(&nf_conntrack_chain, ecache->events,
+ atomic_notifier_call_chain(&nf_conntrack_chain, ecache->events,
ecache->ct);
ecache->events = 0;
static DEFINE_RWLOCK(nl_table_lock);
static atomic_t nl_table_users = ATOMIC_INIT(0);
-static struct notifier_block *netlink_chain;
+static ATOMIC_NOTIFIER_HEAD(netlink_chain);
static u32 netlink_group_mask(u32 group)
{
.protocol = sk->sk_protocol,
.pid = nlk->pid,
};
- notifier_call_chain(&netlink_chain, NETLINK_URELEASE, &n);
+ atomic_notifier_call_chain(&netlink_chain,
+ NETLINK_URELEASE, &n);
}
if (nlk->module)
int netlink_register_notifier(struct notifier_block *nb)
{
- return notifier_chain_register(&netlink_chain, nb);
+ return atomic_notifier_chain_register(&netlink_chain, nb);
}
int netlink_unregister_notifier(struct notifier_block *nb)
{
- return notifier_chain_unregister(&netlink_chain, nb);
+ return atomic_notifier_chain_unregister(&netlink_chain, nb);
}
static const struct proto_ops netlink_ops = {
return -ENXIO;
}
-struct file_operations bad_sock_fops = {
+const struct file_operations bad_sock_fops = {
.owner = THIS_MODULE,
.open = sock_no_open,
};
return -ENXIO;
}
-struct file_operations bad_sock_fops = {
+const struct file_operations bad_sock_fops = {
.owner = THIS_MODULE,
.open = sock_no_open,
};
static struct cache_head *rsi_table[RSI_HASHMAX];
static struct cache_detail rsi_cache;
-static struct rsi *rsi_lookup(struct rsi *item, int set);
+static struct rsi *rsi_update(struct rsi *new, struct rsi *old);
+static struct rsi *rsi_lookup(struct rsi *item);
static void rsi_free(struct rsi *rsii)
{
kfree(rsii->out_token.data);
}
-static void rsi_put(struct cache_head *item, struct cache_detail *cd)
+static void rsi_put(struct kref *ref)
{
- struct rsi *rsii = container_of(item, struct rsi, h);
- if (cache_put(item, cd)) {
- rsi_free(rsii);
- kfree(rsii);
- }
+ struct rsi *rsii = container_of(ref, struct rsi, h.ref);
+ rsi_free(rsii);
+ kfree(rsii);
}
static inline int rsi_hash(struct rsi *item)
^ hash_mem(item->in_token.data, item->in_token.len, RSI_HASHBITS);
}
-static inline int rsi_match(struct rsi *item, struct rsi *tmp)
+static int rsi_match(struct cache_head *a, struct cache_head *b)
{
+ struct rsi *item = container_of(a, struct rsi, h);
+ struct rsi *tmp = container_of(b, struct rsi, h);
return netobj_equal(&item->in_handle, &tmp->in_handle)
&& netobj_equal(&item->in_token, &tmp->in_token);
}
return dup_to_netobj(dst, src->data, src->len);
}
-static inline void rsi_init(struct rsi *new, struct rsi *item)
+static void rsi_init(struct cache_head *cnew, struct cache_head *citem)
{
+ struct rsi *new = container_of(cnew, struct rsi, h);
+ struct rsi *item = container_of(citem, struct rsi, h);
+
new->out_handle.data = NULL;
new->out_handle.len = 0;
new->out_token.data = NULL;
item->in_token.data = NULL;
}
-static inline void rsi_update(struct rsi *new, struct rsi *item)
+static void update_rsi(struct cache_head *cnew, struct cache_head *citem)
{
+ struct rsi *new = container_of(cnew, struct rsi, h);
+ struct rsi *item = container_of(citem, struct rsi, h);
+
BUG_ON(new->out_handle.data || new->out_token.data);
new->out_handle.len = item->out_handle.len;
item->out_handle.len = 0;
new->minor_status = item->minor_status;
}
+static struct cache_head *rsi_alloc(void)
+{
+ struct rsi *rsii = kmalloc(sizeof(*rsii), GFP_KERNEL);
+ if (rsii)
+ return &rsii->h;
+ else
+ return NULL;
+}
+
static void rsi_request(struct cache_detail *cd,
struct cache_head *h,
char **bpp, int *blen)
if (dup_to_netobj(&rsii.in_token, buf, len))
goto out;
+ rsip = rsi_lookup(&rsii);
+ if (!rsip)
+ goto out;
+
rsii.h.flags = 0;
/* expiry */
expiry = get_expiry(&mesg);
goto out;
}
rsii.h.expiry_time = expiry;
- rsip = rsi_lookup(&rsii, 1);
+ rsip = rsi_update(&rsii, rsip);
status = 0;
out:
rsi_free(&rsii);
if (rsip)
- rsi_put(&rsip->h, &rsi_cache);
+ cache_put(&rsip->h, &rsi_cache);
+ else
+ status = -ENOMEM;
return status;
}
.cache_put = rsi_put,
.cache_request = rsi_request,
.cache_parse = rsi_parse,
+ .match = rsi_match,
+ .init = rsi_init,
+ .update = update_rsi,
+ .alloc = rsi_alloc,
};
-static DefineSimpleCacheLookup(rsi, 0)
+static struct rsi *rsi_lookup(struct rsi *item)
+{
+ struct cache_head *ch;
+ int hash = rsi_hash(item);
+
+ ch = sunrpc_cache_lookup(&rsi_cache, &item->h, hash);
+ if (ch)
+ return container_of(ch, struct rsi, h);
+ else
+ return NULL;
+}
+
+static struct rsi *rsi_update(struct rsi *new, struct rsi *old)
+{
+ struct cache_head *ch;
+ int hash = rsi_hash(new);
+
+ ch = sunrpc_cache_update(&rsi_cache, &new->h,
+ &old->h, hash);
+ if (ch)
+ return container_of(ch, struct rsi, h);
+ else
+ return NULL;
+}
+
/*
* The rpcsec_context cache is used to store a context that is
static struct cache_head *rsc_table[RSC_HASHMAX];
static struct cache_detail rsc_cache;
-static struct rsc *rsc_lookup(struct rsc *item, int set);
+static struct rsc *rsc_update(struct rsc *new, struct rsc *old);
+static struct rsc *rsc_lookup(struct rsc *item);
static void rsc_free(struct rsc *rsci)
{
put_group_info(rsci->cred.cr_group_info);
}
-static void rsc_put(struct cache_head *item, struct cache_detail *cd)
+static void rsc_put(struct kref *ref)
{
- struct rsc *rsci = container_of(item, struct rsc, h);
+ struct rsc *rsci = container_of(ref, struct rsc, h.ref);
- if (cache_put(item, cd)) {
- rsc_free(rsci);
- kfree(rsci);
- }
+ rsc_free(rsci);
+ kfree(rsci);
}
static inline int
return hash_mem(rsci->handle.data, rsci->handle.len, RSC_HASHBITS);
}
-static inline int
-rsc_match(struct rsc *new, struct rsc *tmp)
+static int
+rsc_match(struct cache_head *a, struct cache_head *b)
{
+ struct rsc *new = container_of(a, struct rsc, h);
+ struct rsc *tmp = container_of(b, struct rsc, h);
+
return netobj_equal(&new->handle, &tmp->handle);
}
-static inline void
-rsc_init(struct rsc *new, struct rsc *tmp)
+static void
+rsc_init(struct cache_head *cnew, struct cache_head *ctmp)
{
+ struct rsc *new = container_of(cnew, struct rsc, h);
+ struct rsc *tmp = container_of(ctmp, struct rsc, h);
+
new->handle.len = tmp->handle.len;
tmp->handle.len = 0;
new->handle.data = tmp->handle.data;
new->cred.cr_group_info = NULL;
}
-static inline void
-rsc_update(struct rsc *new, struct rsc *tmp)
+static void
+update_rsc(struct cache_head *cnew, struct cache_head *ctmp)
{
+ struct rsc *new = container_of(cnew, struct rsc, h);
+ struct rsc *tmp = container_of(ctmp, struct rsc, h);
+
new->mechctx = tmp->mechctx;
tmp->mechctx = NULL;
memset(&new->seqdata, 0, sizeof(new->seqdata));
tmp->cred.cr_group_info = NULL;
}
+static struct cache_head *
+rsc_alloc(void)
+{
+ struct rsc *rsci = kmalloc(sizeof(*rsci), GFP_KERNEL);
+ if (rsci)
+ return &rsci->h;
+ else
+ return NULL;
+}
+
static int rsc_parse(struct cache_detail *cd,
char *mesg, int mlen)
{
if (expiry == 0)
goto out;
+ rscp = rsc_lookup(&rsci);
+ if (!rscp)
+ goto out;
+
/* uid, or NEGATIVE */
rv = get_int(&mesg, &rsci.cred.cr_uid);
if (rv == -EINVAL)
gss_mech_put(gm);
}
rsci.h.expiry_time = expiry;
- rscp = rsc_lookup(&rsci, 1);
+ rscp = rsc_update(&rsci, rscp);
status = 0;
out:
rsc_free(&rsci);
if (rscp)
- rsc_put(&rscp->h, &rsc_cache);
+ cache_put(&rscp->h, &rsc_cache);
+ else
+ status = -ENOMEM;
return status;
}
.name = "auth.rpcsec.context",
.cache_put = rsc_put,
.cache_parse = rsc_parse,
+ .match = rsc_match,
+ .init = rsc_init,
+ .update = update_rsc,
+ .alloc = rsc_alloc,
};
-static DefineSimpleCacheLookup(rsc, 0);
+static struct rsc *rsc_lookup(struct rsc *item)
+{
+ struct cache_head *ch;
+ int hash = rsc_hash(item);
+
+ ch = sunrpc_cache_lookup(&rsc_cache, &item->h, hash);
+ if (ch)
+ return container_of(ch, struct rsc, h);
+ else
+ return NULL;
+}
+
+static struct rsc *rsc_update(struct rsc *new, struct rsc *old)
+{
+ struct cache_head *ch;
+ int hash = rsc_hash(new);
+
+ ch = sunrpc_cache_update(&rsc_cache, &new->h,
+ &old->h, hash);
+ if (ch)
+ return container_of(ch, struct rsc, h);
+ else
+ return NULL;
+}
+
static struct rsc *
gss_svc_searchbyctx(struct xdr_netobj *handle)
memset(&rsci, 0, sizeof(rsci));
if (dup_to_netobj(&rsci.handle, handle->data, handle->len))
return NULL;
- found = rsc_lookup(&rsci, 0);
+ found = rsc_lookup(&rsci);
rsc_free(&rsci);
if (!found)
return NULL;
return auth_domain_find(name);
}
+static struct auth_ops svcauthops_gss;
+
int
svcauth_gss_register_pseudoflavor(u32 pseudoflavor, char * name)
{
new = kmalloc(sizeof(*new), GFP_KERNEL);
if (!new)
goto out;
- cache_init(&new->h.h);
+ kref_init(&new->h.ref);
new->h.name = kmalloc(strlen(name) + 1, GFP_KERNEL);
if (!new->h.name)
goto out_free_dom;
strcpy(new->h.name, name);
- new->h.flavour = RPC_AUTH_GSS;
+ new->h.flavour = &svcauthops_gss;
new->pseudoflavor = pseudoflavor;
- new->h.h.expiry_time = NEVER;
- test = auth_domain_lookup(&new->h, 1);
- if (test == &new->h) {
- BUG_ON(atomic_dec_and_test(&new->h.h.refcnt));
- } else { /* XXX Duplicate registration? */
+ test = auth_domain_lookup(name, &new->h);
+ if (test != &new->h) { /* XXX Duplicate registration? */
auth_domain_put(&new->h);
+ /* dangling ref-count... */
goto out;
}
return 0;
goto drop;
}
- rsip = rsi_lookup(&rsikey, 0);
+ rsip = rsi_lookup(&rsikey);
rsi_free(&rsikey);
if (!rsip) {
goto drop;
ret = SVC_DROP;
out:
if (rsci)
- rsc_put(&rsci->h, &rsc_cache);
+ cache_put(&rsci->h, &rsc_cache);
return ret;
}
put_group_info(rqstp->rq_cred.cr_group_info);
rqstp->rq_cred.cr_group_info = NULL;
if (gsd->rsci)
- rsc_put(&gsd->rsci->h, &rsc_cache);
+ cache_put(&gsd->rsci->h, &rsc_cache);
gsd->rsci = NULL;
return stat;
static void cache_defer_req(struct cache_req *req, struct cache_head *item);
static void cache_revisit_request(struct cache_head *item);
-void cache_init(struct cache_head *h)
+static void cache_init(struct cache_head *h)
{
time_t now = get_seconds();
h->next = NULL;
h->flags = 0;
- atomic_set(&h->refcnt, 1);
+ kref_init(&h->ref);
h->expiry_time = now + CACHE_NEW_EXPIRY;
h->last_refresh = now;
}
+struct cache_head *sunrpc_cache_lookup(struct cache_detail *detail,
+ struct cache_head *key, int hash)
+{
+ struct cache_head **head, **hp;
+ struct cache_head *new = NULL;
+
+ head = &detail->hash_table[hash];
+
+ read_lock(&detail->hash_lock);
+
+ for (hp=head; *hp != NULL ; hp = &(*hp)->next) {
+ struct cache_head *tmp = *hp;
+ if (detail->match(tmp, key)) {
+ cache_get(tmp);
+ read_unlock(&detail->hash_lock);
+ return tmp;
+ }
+ }
+ read_unlock(&detail->hash_lock);
+ /* Didn't find anything, insert an empty entry */
+
+ new = detail->alloc();
+ if (!new)
+ return NULL;
+ cache_init(new);
+
+ write_lock(&detail->hash_lock);
+
+ /* check if entry appeared while we slept */
+ for (hp=head; *hp != NULL ; hp = &(*hp)->next) {
+ struct cache_head *tmp = *hp;
+ if (detail->match(tmp, key)) {
+ cache_get(tmp);
+ write_unlock(&detail->hash_lock);
+ cache_put(new, detail);
+ return tmp;
+ }
+ }
+ detail->init(new, key);
+ new->next = *head;
+ *head = new;
+ detail->entries++;
+ cache_get(new);
+ write_unlock(&detail->hash_lock);
+
+ return new;
+}
+EXPORT_SYMBOL(sunrpc_cache_lookup);
+
+
+static void queue_loose(struct cache_detail *detail, struct cache_head *ch);
+
+static int cache_fresh_locked(struct cache_head *head, time_t expiry)
+{
+ head->expiry_time = expiry;
+ head->last_refresh = get_seconds();
+ return !test_and_set_bit(CACHE_VALID, &head->flags);
+}
+
+static void cache_fresh_unlocked(struct cache_head *head,
+ struct cache_detail *detail, int new)
+{
+ if (new)
+ cache_revisit_request(head);
+ if (test_and_clear_bit(CACHE_PENDING, &head->flags)) {
+ cache_revisit_request(head);
+ queue_loose(detail, head);
+ }
+}
+
+struct cache_head *sunrpc_cache_update(struct cache_detail *detail,
+ struct cache_head *new, struct cache_head *old, int hash)
+{
+ /* The 'old' entry is to be replaced by 'new'.
+ * If 'old' is not VALID, we update it directly,
+ * otherwise we need to replace it
+ */
+ struct cache_head **head;
+ struct cache_head *tmp;
+ int is_new;
+
+ if (!test_bit(CACHE_VALID, &old->flags)) {
+ write_lock(&detail->hash_lock);
+ if (!test_bit(CACHE_VALID, &old->flags)) {
+ if (test_bit(CACHE_NEGATIVE, &new->flags))
+ set_bit(CACHE_NEGATIVE, &old->flags);
+ else
+ detail->update(old, new);
+ is_new = cache_fresh_locked(old, new->expiry_time);
+ write_unlock(&detail->hash_lock);
+ cache_fresh_unlocked(old, detail, is_new);
+ return old;
+ }
+ write_unlock(&detail->hash_lock);
+ }
+ /* We need to insert a new entry */
+ tmp = detail->alloc();
+ if (!tmp) {
+ cache_put(old, detail);
+ return NULL;
+ }
+ cache_init(tmp);
+ detail->init(tmp, old);
+ head = &detail->hash_table[hash];
+
+ write_lock(&detail->hash_lock);
+ if (test_bit(CACHE_NEGATIVE, &new->flags))
+ set_bit(CACHE_NEGATIVE, &tmp->flags);
+ else
+ detail->update(tmp, new);
+ tmp->next = *head;
+ *head = tmp;
+ cache_get(tmp);
+ is_new = cache_fresh_locked(tmp, new->expiry_time);
+ cache_fresh_locked(old, 0);
+ write_unlock(&detail->hash_lock);
+ cache_fresh_unlocked(tmp, detail, is_new);
+ cache_fresh_unlocked(old, detail, 0);
+ cache_put(old, detail);
+ return tmp;
+}
+EXPORT_SYMBOL(sunrpc_cache_update);
static int cache_make_upcall(struct cache_detail *detail, struct cache_head *h);
/*
clear_bit(CACHE_PENDING, &h->flags);
if (rv == -EAGAIN) {
set_bit(CACHE_NEGATIVE, &h->flags);
- cache_fresh(detail, h, get_seconds()+CACHE_NEW_EXPIRY);
+ cache_fresh_unlocked(h, detail,
+ cache_fresh_locked(h, get_seconds()+CACHE_NEW_EXPIRY));
rv = -ENOENT;
}
break;
if (rv == -EAGAIN)
cache_defer_req(rqstp, h);
- if (rv && h)
- detail->cache_put(h, detail);
+ if (rv)
+ cache_put(h, detail);
return rv;
}
-static void queue_loose(struct cache_detail *detail, struct cache_head *ch);
-
-void cache_fresh(struct cache_detail *detail,
- struct cache_head *head, time_t expiry)
-{
-
- head->expiry_time = expiry;
- head->last_refresh = get_seconds();
- if (!test_and_set_bit(CACHE_VALID, &head->flags))
- cache_revisit_request(head);
- if (test_and_clear_bit(CACHE_PENDING, &head->flags))
- queue_loose(detail, head);
-}
-
/*
* caches need to be periodically cleaned.
* For this we maintain a list of cache_detail and
if (test_and_clear_bit(CACHE_PENDING, &ch->flags))
queue_loose(current_detail, ch);
- if (atomic_read(&ch->refcnt) == 1)
+ if (atomic_read(&ch->ref.refcount) == 1)
break;
}
if (ch) {
current_index ++;
spin_unlock(&cache_list_lock);
if (ch)
- d->cache_put(ch, d);
+ cache_put(ch, d);
} else
spin_unlock(&cache_list_lock);
/* there was one too many */
dreq->revisit(dreq, 1);
}
- if (test_bit(CACHE_VALID, &item->flags)) {
+ if (!test_bit(CACHE_PENDING, &item->flags)) {
/* must have just been validated... */
cache_revisit_request(item);
}
!test_bit(CACHE_PENDING, &rq->item->flags)) {
list_del(&rq->q.list);
spin_unlock(&queue_lock);
- cd->cache_put(rq->item, cd);
+ cache_put(rq->item, cd);
kfree(rq->buf);
kfree(rq);
} else
if (cr->item != ch)
continue;
if (cr->readers != 0)
- break;
+ continue;
list_del(&cr->q.list);
spin_unlock(&queue_lock);
- detail->cache_put(cr->item, detail);
+ cache_put(cr->item, detail);
kfree(cr->buf);
kfree(cr);
return;
return cd->cache_show(m, cd, NULL);
ifdebug(CACHE)
- seq_printf(m, "# expiry=%ld refcnt=%d\n",
- cp->expiry_time, atomic_read(&cp->refcnt));
+ seq_printf(m, "# expiry=%ld refcnt=%d flags=%lx\n",
+ cp->expiry_time, atomic_read(&cp->ref.refcount), cp->flags);
cache_get(cp);
if (cache_check(cd, cp, NULL))
/* cache_check does a cache_put on failure */
*/
struct rpc_filelist {
char *name;
- struct file_operations *i_fop;
+ const struct file_operations *i_fop;
int mode;
};
* Register/unregister RPC proc files
*/
static inline struct proc_dir_entry *
-do_register(const char *name, void *data, struct file_operations *fops)
+do_register(const char *name, void *data, const struct file_operations *fops)
{
struct proc_dir_entry *ent;
}
struct proc_dir_entry *
-svc_proc_register(struct svc_stat *statp, struct file_operations *fops)
+svc_proc_register(struct svc_stat *statp, const struct file_operations *fops)
{
return do_register(statp->program->pg_name, statp, fops);
}
EXPORT_SYMBOL(cache_check);
EXPORT_SYMBOL(cache_flush);
EXPORT_SYMBOL(cache_purge);
-EXPORT_SYMBOL(cache_fresh);
-EXPORT_SYMBOL(cache_init);
EXPORT_SYMBOL(cache_register);
EXPORT_SYMBOL(cache_unregister);
EXPORT_SYMBOL(qword_add);
extern int register_rpc_pipefs(void);
extern void unregister_rpc_pipefs(void);
+extern struct cache_detail ip_map_cache;
static int __init
init_sunrpc(void)
#ifdef CONFIG_PROC_FS
rpc_proc_init();
#endif
- cache_register(&auth_domain_cache);
cache_register(&ip_map_cache);
out:
return err;
{
unregister_rpc_pipefs();
rpc_destroy_mempool();
- if (cache_unregister(&auth_domain_cache))
- printk(KERN_ERR "sunrpc: failed to unregister auth_domain cache\n");
if (cache_unregister(&ip_map_cache))
printk(KERN_ERR "sunrpc: failed to unregister ip_map cache\n");
#ifdef RPC_DEBUG
EXPORT_SYMBOL(svc_auth_unregister);
/**************************************************
- * cache for domain name to auth_domain
- * Entries are only added by flavours which will normally
- * have a structure that 'inherits' from auth_domain.
- * e.g. when an IP -> domainname is given to auth_unix,
- * and the domain name doesn't exist, it will create a
- * auth_unix_domain and add it to this hash table.
- * If it finds the name does exist, but isn't AUTH_UNIX,
- * it will complain.
+ * 'auth_domains' are stored in a hash table indexed by name.
+ * When the last reference to an 'auth_domain' is dropped,
+ * the object is unhashed and freed.
+ * If auth_domain_lookup fails to find an entry, it will return
+ * it's second argument 'new'. If this is non-null, it will
+ * have been atomically linked into the table.
*/
-/*
- * Auth auth_domain cache is somewhat different to other caches,
- * largely because the entries are possibly of different types:
- * each auth flavour has it's own type.
- * One consequence of this that DefineCacheLookup cannot
- * allocate a new structure as it cannot know the size.
- * Notice that the "INIT" code fragment is quite different
- * from other caches. When auth_domain_lookup might be
- * creating a new domain, the new domain is passed in
- * complete and it is used as-is rather than being copied into
- * another structure.
- */
#define DN_HASHBITS 6
#define DN_HASHMAX (1<<DN_HASHBITS)
#define DN_HASHMASK (DN_HASHMAX-1)
-static struct cache_head *auth_domain_table[DN_HASHMAX];
-
-static void auth_domain_drop(struct cache_head *item, struct cache_detail *cd)
-{
- struct auth_domain *dom = container_of(item, struct auth_domain, h);
- if (cache_put(item,cd))
- authtab[dom->flavour]->domain_release(dom);
-}
-
-
-struct cache_detail auth_domain_cache = {
- .owner = THIS_MODULE,
- .hash_size = DN_HASHMAX,
- .hash_table = auth_domain_table,
- .name = "auth.domain",
- .cache_put = auth_domain_drop,
-};
+static struct hlist_head auth_domain_table[DN_HASHMAX];
+static spinlock_t auth_domain_lock = SPIN_LOCK_UNLOCKED;
void auth_domain_put(struct auth_domain *dom)
{
- auth_domain_drop(&dom->h, &auth_domain_cache);
-}
-
-static inline int auth_domain_hash(struct auth_domain *item)
-{
- return hash_str(item->name, DN_HASHBITS);
-}
-static inline int auth_domain_match(struct auth_domain *tmp, struct auth_domain *item)
-{
- return strcmp(tmp->name, item->name) == 0;
+ if (atomic_dec_and_lock(&dom->ref.refcount, &auth_domain_lock)) {
+ hlist_del(&dom->hash);
+ dom->flavour->domain_release(dom);
+ }
}
struct auth_domain *
-auth_domain_lookup(struct auth_domain *item, int set)
+auth_domain_lookup(char *name, struct auth_domain *new)
{
- struct auth_domain *tmp = NULL;
- struct cache_head **hp, **head;
- head = &auth_domain_cache.hash_table[auth_domain_hash(item)];
-
- if (set)
- write_lock(&auth_domain_cache.hash_lock);
- else
- read_lock(&auth_domain_cache.hash_lock);
- for (hp=head; *hp != NULL; hp = &tmp->h.next) {
- tmp = container_of(*hp, struct auth_domain, h);
- if (!auth_domain_match(tmp, item))
- continue;
- if (!set) {
- cache_get(&tmp->h);
- goto out_noset;
+ struct auth_domain *hp;
+ struct hlist_head *head;
+ struct hlist_node *np;
+
+ head = &auth_domain_table[hash_str(name, DN_HASHBITS)];
+
+ spin_lock(&auth_domain_lock);
+
+ hlist_for_each_entry(hp, np, head, hash) {
+ if (strcmp(hp->name, name)==0) {
+ kref_get(&hp->ref);
+ spin_unlock(&auth_domain_lock);
+ return hp;
}
- *hp = tmp->h.next;
- tmp->h.next = NULL;
- auth_domain_drop(&tmp->h, &auth_domain_cache);
- goto out_set;
}
- /* Didn't find anything */
- if (!set)
- goto out_nada;
- auth_domain_cache.entries++;
-out_set:
- item->h.next = *head;
- *head = &item->h;
- cache_get(&item->h);
- write_unlock(&auth_domain_cache.hash_lock);
- cache_fresh(&auth_domain_cache, &item->h, item->h.expiry_time);
- cache_get(&item->h);
- return item;
-out_nada:
- tmp = NULL;
-out_noset:
- read_unlock(&auth_domain_cache.hash_lock);
- return tmp;
+ if (new) {
+ hlist_add_head(&new->hash, head);
+ kref_get(&new->ref);
+ }
+ spin_unlock(&auth_domain_lock);
+ return new;
}
struct auth_domain *auth_domain_find(char *name)
{
- struct auth_domain *rv, ad;
-
- ad.name = name;
- rv = auth_domain_lookup(&ad, 0);
- return rv;
+ return auth_domain_lookup(name, NULL);
}
/* other stuff later */
};
+extern struct auth_ops svcauth_unix;
+
struct auth_domain *unix_domain_find(char *name)
{
- struct auth_domain *rv, ud;
- struct unix_domain *new;
-
- ud.name = name;
-
- rv = auth_domain_lookup(&ud, 0);
-
- foundit:
- if (rv && rv->flavour != RPC_AUTH_UNIX) {
- auth_domain_put(rv);
- return NULL;
- }
- if (rv)
- return rv;
-
- new = kmalloc(sizeof(*new), GFP_KERNEL);
- if (new == NULL)
- return NULL;
- cache_init(&new->h.h);
- new->h.name = kstrdup(name, GFP_KERNEL);
- new->h.flavour = RPC_AUTH_UNIX;
- new->addr_changes = 0;
- new->h.h.expiry_time = NEVER;
-
- rv = auth_domain_lookup(&new->h, 2);
- if (rv == &new->h) {
- if (atomic_dec_and_test(&new->h.h.refcnt)) BUG();
- } else {
- auth_domain_put(&new->h);
- goto foundit;
+ struct auth_domain *rv;
+ struct unix_domain *new = NULL;
+
+ rv = auth_domain_lookup(name, NULL);
+ while(1) {
+ if (rv) {
+ if (new && rv != &new->h)
+ auth_domain_put(&new->h);
+
+ if (rv->flavour != &svcauth_unix) {
+ auth_domain_put(rv);
+ return NULL;
+ }
+ return rv;
+ }
+
+ new = kmalloc(sizeof(*new), GFP_KERNEL);
+ if (new == NULL)
+ return NULL;
+ kref_init(&new->h.ref);
+ new->h.name = kstrdup(name, GFP_KERNEL);
+ new->h.flavour = &svcauth_unix;
+ new->addr_changes = 0;
+ rv = auth_domain_lookup(name, &new->h);
}
-
- return rv;
}
static void svcauth_unix_domain_release(struct auth_domain *dom)
};
static struct cache_head *ip_table[IP_HASHMAX];
-static void ip_map_put(struct cache_head *item, struct cache_detail *cd)
+static void ip_map_put(struct kref *kref)
{
+ struct cache_head *item = container_of(kref, struct cache_head, ref);
struct ip_map *im = container_of(item, struct ip_map,h);
- if (cache_put(item, cd)) {
- if (test_bit(CACHE_VALID, &item->flags) &&
- !test_bit(CACHE_NEGATIVE, &item->flags))
- auth_domain_put(&im->m_client->h);
- kfree(im);
- }
+
+ if (test_bit(CACHE_VALID, &item->flags) &&
+ !test_bit(CACHE_NEGATIVE, &item->flags))
+ auth_domain_put(&im->m_client->h);
+ kfree(im);
}
#if IP_HASHBITS == 8
return (hash ^ (hash>>8)) & 0xff;
}
#endif
-
-static inline int ip_map_hash(struct ip_map *item)
-{
- return hash_str(item->m_class, IP_HASHBITS) ^
- hash_ip((unsigned long)item->m_addr.s_addr);
-}
-static inline int ip_map_match(struct ip_map *item, struct ip_map *tmp)
+static int ip_map_match(struct cache_head *corig, struct cache_head *cnew)
{
- return strcmp(tmp->m_class, item->m_class) == 0
- && tmp->m_addr.s_addr == item->m_addr.s_addr;
+ struct ip_map *orig = container_of(corig, struct ip_map, h);
+ struct ip_map *new = container_of(cnew, struct ip_map, h);
+ return strcmp(orig->m_class, new->m_class) == 0
+ && orig->m_addr.s_addr == new->m_addr.s_addr;
}
-static inline void ip_map_init(struct ip_map *new, struct ip_map *item)
+static void ip_map_init(struct cache_head *cnew, struct cache_head *citem)
{
+ struct ip_map *new = container_of(cnew, struct ip_map, h);
+ struct ip_map *item = container_of(citem, struct ip_map, h);
+
strcpy(new->m_class, item->m_class);
new->m_addr.s_addr = item->m_addr.s_addr;
}
-static inline void ip_map_update(struct ip_map *new, struct ip_map *item)
+static void update(struct cache_head *cnew, struct cache_head *citem)
{
- cache_get(&item->m_client->h.h);
+ struct ip_map *new = container_of(cnew, struct ip_map, h);
+ struct ip_map *item = container_of(citem, struct ip_map, h);
+
+ kref_get(&item->m_client->h.ref);
new->m_client = item->m_client;
new->m_add_change = item->m_add_change;
}
+static struct cache_head *ip_map_alloc(void)
+{
+ struct ip_map *i = kmalloc(sizeof(*i), GFP_KERNEL);
+ if (i)
+ return &i->h;
+ else
+ return NULL;
+}
static void ip_map_request(struct cache_detail *cd,
struct cache_head *h,
(*bpp)[-1] = '\n';
}
-static struct ip_map *ip_map_lookup(struct ip_map *, int);
+static struct ip_map *ip_map_lookup(char *class, struct in_addr addr);
+static int ip_map_update(struct ip_map *ipm, struct unix_domain *udom, time_t expiry);
static int ip_map_parse(struct cache_detail *cd,
char *mesg, int mlen)
int len;
int b1,b2,b3,b4;
char c;
- struct ip_map ipm, *ipmp;
+ char class[8];
+ struct in_addr addr;
+ int err;
+
+ struct ip_map *ipmp;
struct auth_domain *dom;
time_t expiry;
mesg[mlen-1] = 0;
/* class */
- len = qword_get(&mesg, ipm.m_class, sizeof(ipm.m_class));
+ len = qword_get(&mesg, class, sizeof(class));
if (len <= 0) return -EINVAL;
/* ip address */
} else
dom = NULL;
- ipm.m_addr.s_addr =
+ addr.s_addr =
htonl((((((b1<<8)|b2)<<8)|b3)<<8)|b4);
- ipm.h.flags = 0;
- if (dom) {
- ipm.m_client = container_of(dom, struct unix_domain, h);
- ipm.m_add_change = ipm.m_client->addr_changes;
+
+ ipmp = ip_map_lookup(class,addr);
+ if (ipmp) {
+ err = ip_map_update(ipmp,
+ container_of(dom, struct unix_domain, h),
+ expiry);
} else
- set_bit(CACHE_NEGATIVE, &ipm.h.flags);
- ipm.h.expiry_time = expiry;
+ err = -ENOMEM;
- ipmp = ip_map_lookup(&ipm, 1);
- if (ipmp)
- ip_map_put(&ipmp->h, &ip_map_cache);
if (dom)
auth_domain_put(dom);
- if (!ipmp)
- return -ENOMEM;
+
cache_flush();
- return 0;
+ return err;
}
static int ip_map_show(struct seq_file *m,
.cache_request = ip_map_request,
.cache_parse = ip_map_parse,
.cache_show = ip_map_show,
+ .match = ip_map_match,
+ .init = ip_map_init,
+ .update = update,
+ .alloc = ip_map_alloc,
};
-static DefineSimpleCacheLookup(ip_map, 0)
+static struct ip_map *ip_map_lookup(char *class, struct in_addr addr)
+{
+ struct ip_map ip;
+ struct cache_head *ch;
+
+ strcpy(ip.m_class, class);
+ ip.m_addr = addr;
+ ch = sunrpc_cache_lookup(&ip_map_cache, &ip.h,
+ hash_str(class, IP_HASHBITS) ^
+ hash_ip((unsigned long)addr.s_addr));
+
+ if (ch)
+ return container_of(ch, struct ip_map, h);
+ else
+ return NULL;
+}
+static int ip_map_update(struct ip_map *ipm, struct unix_domain *udom, time_t expiry)
+{
+ struct ip_map ip;
+ struct cache_head *ch;
+
+ ip.m_client = udom;
+ ip.h.flags = 0;
+ if (!udom)
+ set_bit(CACHE_NEGATIVE, &ip.h.flags);
+ else {
+ ip.m_add_change = udom->addr_changes;
+ /* if this is from the legacy set_client system call,
+ * we need m_add_change to be one higher
+ */
+ if (expiry == NEVER)
+ ip.m_add_change++;
+ }
+ ip.h.expiry_time = expiry;
+ ch = sunrpc_cache_update(&ip_map_cache,
+ &ip.h, &ipm->h,
+ hash_str(ipm->m_class, IP_HASHBITS) ^
+ hash_ip((unsigned long)ipm->m_addr.s_addr));
+ if (!ch)
+ return -ENOMEM;
+ cache_put(ch, &ip_map_cache);
+ return 0;
+}
int auth_unix_add_addr(struct in_addr addr, struct auth_domain *dom)
{
struct unix_domain *udom;
- struct ip_map ip, *ipmp;
+ struct ip_map *ipmp;
- if (dom->flavour != RPC_AUTH_UNIX)
+ if (dom->flavour != &svcauth_unix)
return -EINVAL;
udom = container_of(dom, struct unix_domain, h);
- strcpy(ip.m_class, "nfsd");
- ip.m_addr = addr;
- ip.m_client = udom;
- ip.m_add_change = udom->addr_changes+1;
- ip.h.flags = 0;
- ip.h.expiry_time = NEVER;
-
- ipmp = ip_map_lookup(&ip, 1);
+ ipmp = ip_map_lookup("nfsd", addr);
- if (ipmp) {
- ip_map_put(&ipmp->h, &ip_map_cache);
- return 0;
- } else
+ if (ipmp)
+ return ip_map_update(ipmp, udom, NEVER);
+ else
return -ENOMEM;
}
{
struct unix_domain *udom;
- if (dom->flavour != RPC_AUTH_UNIX)
+ if (dom->flavour != &svcauth_unix)
return -EINVAL;
udom = container_of(dom, struct unix_domain, h);
udom->addr_changes++;
strcpy(key.m_class, "nfsd");
key.m_addr = addr;
- ipm = ip_map_lookup(&key, 0);
+ ipm = ip_map_lookup("nfsd", addr);
if (!ipm)
return NULL;
rv = NULL;
} else {
rv = &ipm->m_client->h;
- cache_get(&rv->h);
+ kref_get(&rv->ref);
}
- ip_map_put(&ipm->h, &ip_map_cache);
+ cache_put(&ipm->h, &ip_map_cache);
return rv;
}
void svcauth_unix_purge(void)
{
cache_purge(&ip_map_cache);
- cache_purge(&auth_domain_cache);
}
static int
svcauth_unix_set_client(struct svc_rqst *rqstp)
{
- struct ip_map key, *ipm;
+ struct ip_map *ipm;
rqstp->rq_client = NULL;
if (rqstp->rq_proc == 0)
return SVC_OK;
- strcpy(key.m_class, rqstp->rq_server->sv_program->pg_class);
- key.m_addr = rqstp->rq_addr.sin_addr;
-
- ipm = ip_map_lookup(&key, 0);
+ ipm = ip_map_lookup(rqstp->rq_server->sv_program->pg_class,
+ rqstp->rq_addr.sin_addr);
if (ipm == NULL)
return SVC_DENIED;
return SVC_DENIED;
case 0:
rqstp->rq_client = &ipm->m_client->h;
- cache_get(&rqstp->rq_client->h);
- ip_map_put(&ipm->h, &ip_map_cache);
+ kref_get(&rqstp->rq_client->ref);
+ cache_put(&ipm->h, &ip_map_cache);
break;
}
return SVC_OK;
struct snd_monitor_file *mfile;
struct file *file;
struct snd_shutdown_f_ops *s_f_ops;
- struct file_operations *f_ops, *old_f_ops;
+ struct file_operations *f_ops;
+ const struct file_operations *old_f_ops;
int err;
spin_lock(&card->files_lock);
return -EINVAL;
}
if (params->buffer_size != runtime->buffer_size) {
- if ((newbuf = (char *) kmalloc(params->buffer_size, GFP_KERNEL)) == NULL)
+ newbuf = kmalloc(params->buffer_size, GFP_KERNEL);
+ if (!newbuf)
return -ENOMEM;
kfree(runtime->buffer);
runtime->buffer = newbuf;
return -EINVAL;
}
if (params->buffer_size != runtime->buffer_size) {
- if ((newbuf = (char *) kmalloc(params->buffer_size, GFP_KERNEL)) == NULL)
+ newbuf = kmalloc(params->buffer_size, GFP_KERNEL);
+ if (!newbuf)
return -ENOMEM;
kfree(runtime->buffer);
runtime->buffer = newbuf;
{
unsigned int minor = iminor(inode);
struct snd_minor *mptr = NULL;
- struct file_operations *old_fops;
+ const struct file_operations *old_fops;
int err = 0;
if (minor >= ARRAY_SIZE(snd_minors))
* Retrurns zero if successful, or a negative error code on failure.
*/
int snd_register_device(int type, struct snd_card *card, int dev,
- struct file_operations *f_ops, void *private_data,
+ const struct file_operations *f_ops, void *private_data,
const char *name)
{
int minor;
}
int snd_register_oss_device(int type, struct snd_card *card, int dev,
- struct file_operations *f_ops, void *private_data,
+ const struct file_operations *f_ops, void *private_data,
const char *name)
{
int minor = snd_oss_kernel_minor(type, card, dev);
MODULE_PARM_DESC(irq, "IRQ # for MPU-401 device.");
static struct platform_device *platform_devices[SNDRV_CARDS];
-static int pnp_registered = 0;
+static int pnp_registered;
+static unsigned int snd_mpu401_devices;
static int snd_mpu401_create(int dev, struct snd_card **rcard)
{
}
snd_card_set_dev(card, &pnp_dev->dev);
pnp_set_drvdata(pnp_dev, card);
+ snd_mpu401_devices++;
++dev;
return 0;
}
static int __init alsa_card_mpu401_init(void)
{
- int i, err, devices;
+ int i, err;
if ((err = platform_driver_register(&snd_mpu401_driver)) < 0)
return err;
- devices = 0;
for (i = 0; i < SNDRV_CARDS; i++) {
struct platform_device *device;
if (! enable[i])
goto errout;
}
platform_devices[i] = device;
- devices++;
+ snd_mpu401_devices++;
}
- if ((err = pnp_register_driver(&snd_mpu401_pnp_driver)) >= 0) {
+ err = pnp_register_driver(&snd_mpu401_pnp_driver);
+ if (!err)
pnp_registered = 1;
- devices += err;
- }
- if (!devices) {
+ if (!snd_mpu401_devices) {
#ifdef MODULE
printk(KERN_ERR "MPU-401 device not found or device busy\n");
#endif
return 0;
}
+static unsigned int __devinitdata ad1816a_devices;
+
static int __devinit snd_ad1816a_pnp_detect(struct pnp_card_link *card,
const struct pnp_card_device_id *id)
{
if (res < 0)
return res;
dev++;
+ ad1816a_devices++;
return 0;
}
return -ENODEV;
static int __init alsa_card_ad1816a_init(void)
{
- int cards;
+ int err;
+
+ err = pnp_register_card_driver(&ad1816a_pnpc_driver);
+ if (err)
+ return err;
- cards = pnp_register_card_driver(&ad1816a_pnpc_driver);
- if (cards <= 0) {
+ if (!ad1816a_devices) {
pnp_unregister_card_driver(&ad1816a_pnpc_driver);
#ifdef MODULE
printk(KERN_ERR "no AD1816A based soundcards found.\n");
return 0;
}
-static int __init snd_card_als100_probe(int dev,
+static int __devinit snd_card_als100_probe(int dev,
struct pnp_card_link *pcard,
const struct pnp_card_device_id *pid)
{
return 0;
}
+static unsigned int __devinitdata als100_devices;
+
static int __devinit snd_als100_pnp_detect(struct pnp_card_link *card,
const struct pnp_card_device_id *id)
{
if (res < 0)
return res;
dev++;
+ als100_devices++;
return 0;
}
return -ENODEV;
static int __init alsa_card_als100_init(void)
{
- int cards;
+ int err;
+
+ err = pnp_register_card_driver(&als100_pnpc_driver);
+ if (err)
+ return err;
- cards = pnp_register_card_driver(&als100_pnpc_driver);
- if (cards <= 0) {
+ if (!als100_devices) {
pnp_unregister_card_driver(&als100_pnpc_driver);
#ifdef MODULE
snd_printk(KERN_ERR "no ALS100 based soundcards found\n");
return 0;
}
+static unsigned int __devinitdata azt2320_devices;
+
static int __devinit snd_azt2320_pnp_detect(struct pnp_card_link *card,
const struct pnp_card_device_id *id)
{
if (res < 0)
return res;
dev++;
+ azt2320_devices++;
return 0;
}
return -ENODEV;
static int __init alsa_card_azt2320_init(void)
{
- int cards;
+ int err;
+
+ err = pnp_register_card_driver(&azt2320_pnpc_driver);
+ if (err)
+ return err;
- cards = pnp_register_card_driver(&azt2320_pnpc_driver);
- if (cards <= 0) {
+ if (!azt2320_devices) {
pnp_unregister_card_driver(&azt2320_pnpc_driver);
#ifdef MODULE
snd_printk(KERN_ERR "no AZT2320 based soundcards found\n");
#endif
-static struct ad1848_mix_elem snd_cmi8330_controls[] __initdata = {
+static struct ad1848_mix_elem snd_cmi8330_controls[] __devinitdata = {
AD1848_DOUBLE("Master Playback Volume", 0, CMI8330_MASTVOL, CMI8330_MASTVOL, 4, 0, 15, 0),
AD1848_SINGLE("Loud Playback Switch", 0, CMI8330_MUTEMUX, 6, 1, 1),
AD1848_DOUBLE("PCM Playback Switch", 0, AD1848_LEFT_OUTPUT, AD1848_RIGHT_OUTPUT, 7, 7, 1, 1),
};
#ifdef ENABLE_SB_MIXER
-static struct sbmix_elem cmi8330_sb_mixers[] __initdata = {
+static struct sbmix_elem cmi8330_sb_mixers[] __devinitdata = {
SB_DOUBLE("SB Master Playback Volume", SB_DSP4_MASTER_DEV, (SB_DSP4_MASTER_DEV + 1), 3, 3, 31),
SB_DOUBLE("Tone Control - Bass", SB_DSP4_BASS_DEV, (SB_DSP4_BASS_DEV + 1), 4, 4, 15),
SB_DOUBLE("Tone Control - Treble", SB_DSP4_TREBLE_DEV, (SB_DSP4_TREBLE_DEV + 1), 4, 4, 15),
SB_SINGLE("SB Mic Auto Gain", SB_DSP4_MIC_AGC, 0, 1),
};
-static unsigned char cmi8330_sb_init_values[][2] __initdata = {
+static unsigned char cmi8330_sb_init_values[][2] __devinitdata = {
{ SB_DSP4_MASTER_DEV + 0, 0 },
{ SB_DSP4_MASTER_DEV + 1, 0 },
{ SB_DSP4_PCM_DEV + 0, 0 },
return snd_card_register(card);
}
-static int __init snd_cmi8330_nonpnp_probe(struct platform_device *pdev)
+static int __devinit snd_cmi8330_nonpnp_probe(struct platform_device *pdev)
{
struct snd_card *card;
int err;
#ifdef CONFIG_PNP
+static unsigned int __devinitdata cmi8330_pnp_devices;
+
static int __devinit snd_cmi8330_pnp_detect(struct pnp_card_link *pcard,
const struct pnp_card_device_id *pid)
{
}
pnp_set_card_drvdata(pcard, card);
dev++;
+ cmi8330_pnp_devices++;
return 0;
}
#ifdef CONFIG_PNP
err = pnp_register_card_driver(&cmi8330_pnpc_driver);
- if (err >= 0) {
+ if (!err) {
pnp_registered = 1;
- cards += err;
+ cards += cmi8330_pnp_devices;
}
#endif
static int pnp_registered;
#endif
#endif /* CONFIG_PNP */
+static unsigned int snd_cs423x_devices;
struct snd_card_cs4236 {
struct snd_cs4231 *chip;
snd_card_free(card);
return err;
}
-
+
platform_set_drvdata(pdev, card);
return 0;
}
}
pnp_set_drvdata(pdev, card);
dev++;
+ snd_cs423x_devices++;
return 0;
}
}
pnp_set_card_drvdata(pcard, card);
dev++;
+ snd_cs423x_devices++;
return 0;
}
snd_card_free(pnp_get_card_drvdata(pcard));
pnp_set_card_drvdata(pcard, NULL);
}
-
+
#ifdef CONFIG_PM
static int snd_cs423x_pnpc_suspend(struct pnp_card_link *pcard, pm_message_t state)
{
static int __init alsa_card_cs423x_init(void)
{
- int i, err, cards = 0;
+ int i, err;
if ((err = platform_driver_register(&cs423x_nonpnp_driver)) < 0)
return err;
goto errout;
}
platform_devices[i] = device;
- cards++;
+ snd_cs423x_devices++;
}
#ifdef CONFIG_PNP
#ifdef CS4232
- i = pnp_register_driver(&cs4232_pnp_driver);
- if (i >= 0) {
+ err = pnp_register_driver(&cs4232_pnp_driver);
+ if (!err)
pnp_registered = 1;
- cards += i;
- }
#endif
- i = pnp_register_card_driver(&cs423x_pnpc_driver);
- if (i >= 0) {
+ err = pnp_register_card_driver(&cs423x_pnpc_driver);
+ if (!err)
pnpc_registered = 1;
- cards += i;
- }
#endif /* CONFIG_PNP */
- if (!cards) {
+ if (!snd_cs423x_devices) {
#ifdef MODULE
printk(KERN_ERR IDENT " soundcard not found or device busy\n");
#endif
return 0;
}
+static unsigned int __devinitdata dt019x_devices;
+
static int __devinit snd_dt019x_pnp_probe(struct pnp_card_link *card,
const struct pnp_card_device_id *pid)
{
if (res < 0)
return res;
dev++;
+ dt019x_devices++;
return 0;
}
return -ENODEV;
static int __init alsa_card_dt019x_init(void)
{
- int cards = 0;
+ int err;
+
+ err = pnp_register_card_driver(&dt019x_pnpc_driver);
+ if (err)
+ return err;
- cards = pnp_register_card_driver(&dt019x_pnpc_driver);
- if (cards <= 0) {
+ if (!dt019x_devices) {
pnp_unregister_card_driver(&dt019x_pnpc_driver);
#ifdef MODULE
snd_printk(KERN_ERR "no DT-019X / ALS-007 based soundcards found\n");
return snd_card_register(card);
}
-static int __init snd_es18xx_nonpnp_probe1(int dev, struct platform_device *devptr)
+static int __devinit snd_es18xx_nonpnp_probe1(int dev, struct platform_device *devptr)
{
struct snd_card *card;
int err;
return 0;
}
-static int __init snd_es18xx_nonpnp_probe(struct platform_device *pdev)
+static int __devinit snd_es18xx_nonpnp_probe(struct platform_device *pdev)
{
int dev = pdev->id;
int err;
#ifdef CONFIG_PNP
+static unsigned int __devinitdata es18xx_pnp_devices;
+
static int __devinit snd_audiodrive_pnp_detect(struct pnp_card_link *pcard,
const struct pnp_card_device_id *pid)
{
pnp_set_card_drvdata(pcard, card);
dev++;
+ es18xx_pnp_devices++;
return 0;
}
}
#ifdef CONFIG_PNP
- i = pnp_register_card_driver(&es18xx_pnpc_driver);
- if (i >= 0) {
+ err = pnp_register_card_driver(&es18xx_pnpc_driver);
+ if (!err) {
pnp_registered = 1;
- cards += i;
+ cards += es18xx_pnp_devices;
}
#endif
return 0;
}
-static int __init snd_interwave_nonpnp_probe1(int dev, struct platform_device *devptr)
+static int __devinit snd_interwave_nonpnp_probe1(int dev, struct platform_device *devptr)
{
struct snd_card *card;
int err;
return 0;
}
-static int __init snd_interwave_nonpnp_probe(struct platform_device *pdev)
+static int __devinit snd_interwave_nonpnp_probe(struct platform_device *pdev)
{
int dev = pdev->id;
int err;
};
#ifdef CONFIG_PNP
+static unsigned int __devinitdata interwave_pnp_devices;
static int __devinit snd_interwave_pnp_detect(struct pnp_card_link *pcard,
const struct pnp_card_device_id *pid)
}
pnp_set_card_drvdata(pcard, card);
dev++;
+ interwave_pnp_devices++;
return 0;
}
}
/* ISA PnP cards */
- i = pnp_register_card_driver(&interwave_pnpc_driver);
- if (i >= 0) {
+ err = pnp_register_card_driver(&interwave_pnpc_driver);
+ if (!err) {
pnp_registered = 1;
- cards += i;
+ cards += interwave_pnp_devices;;
}
if (!cards) {
static int pnp_registered;
static int pnpc_registered;
#endif
+static unsigned int snd_opl3sa2_devices;
/* control ports */
#define OPL3SA2_PM_CTRL 0x01
}
pnp_set_drvdata(pdev, card);
dev++;
+ snd_opl3sa2_devices++;
return 0;
}
}
pnp_set_card_drvdata(pcard, card);
dev++;
+ snd_opl3sa2_devices++;
return 0;
}
static int __init alsa_card_opl3sa2_init(void)
{
- int i, err, cards = 0;
+ int i, err;
if ((err = platform_driver_register(&snd_opl3sa2_nonpnp_driver)) < 0)
return err;
goto errout;
}
platform_devices[i] = device;
- cards++;
+ snd_opl3sa2_devices++;
}
#ifdef CONFIG_PNP
err = pnp_register_driver(&opl3sa2_pnp_driver);
- if (err >= 0) {
+ if (!err)
pnp_registered = 1;
- cards += err;
- }
err = pnp_register_card_driver(&opl3sa2_pnpc_driver);
- if (err >= 0) {
+ if (!err)
pnpc_registered = 1;
- cards += err;
- }
#endif
- if (!cards) {
+ if (!snd_opl3sa2_devices) {
#ifdef MODULE
snd_printk(KERN_ERR "Yamaha OPL3-SA soundcard not found or device busy\n");
#endif
return 0;
}
-static int __init snd_card_es968_probe(int dev,
+static int __devinit snd_card_es968_probe(int dev,
struct pnp_card_link *pcard,
const struct pnp_card_device_id *pid)
{
return 0;
}
+static unsigned int __devinitdata es968_devices;
+
static int __devinit snd_es968_pnp_detect(struct pnp_card_link *card,
const struct pnp_card_device_id *id)
{
if (res < 0)
return res;
dev++;
+ es968_devices++;
return 0;
}
return -ENODEV;
static int __init alsa_card_es968_init(void)
{
- int cards = pnp_register_card_driver(&es968_pnpc_driver);
- if (cards <= 0) {
+ int err = pnp_register_card_driver(&es968_pnpc_driver);
+ if (err)
+ return err;
+
+ if (!es968_devices) {
pnp_unregister_card_driver(&es968_pnpc_driver);
#ifdef MODULE
snd_printk(KERN_ERR "no ES968 based soundcards found\n");
return card;
}
-static int __init snd_sb16_probe(struct snd_card *card, int dev)
+static int __devinit snd_sb16_probe(struct snd_card *card, int dev)
{
int xirq, xdma8, xdma16;
struct snd_sb *chip;
}
#endif
-static int __init snd_sb16_nonpnp_probe1(int dev, struct platform_device *devptr)
+static int __devinit snd_sb16_nonpnp_probe1(int dev, struct platform_device *devptr)
{
struct snd_card_sb16 *acard;
struct snd_card *card;
}
-static int __init snd_sb16_nonpnp_probe(struct platform_device *pdev)
+static int __devinit snd_sb16_nonpnp_probe(struct platform_device *pdev)
{
int dev = pdev->id;
int err;
#ifdef CONFIG_PNP
+static unsigned int __devinitdata sb16_pnp_devices;
static int __devinit snd_sb16_pnp_detect(struct pnp_card_link *pcard,
const struct pnp_card_device_id *pid)
}
pnp_set_card_drvdata(pcard, card);
dev++;
+ sb16_pnp_devices++;
return 0;
}
}
#ifdef CONFIG_PNP
/* PnP cards at last */
- i = pnp_register_card_driver(&sb16_pnpc_driver);
- if (i >= 0) {
+ err = pnp_register_card_driver(&sb16_pnpc_driver);
+ if (!err) {
pnp_registered = 1;
- cards += i;
+ cards += sb16_pnp_devices;
}
#endif
}
-static int __init snd_sscape_probe(struct platform_device *pdev)
+static int __devinit snd_sscape_probe(struct platform_device *pdev)
{
int dev = pdev->id;
struct snd_card *card;
if (ret < 0)
return ret;
#ifdef CONFIG_PNP
- if (pnp_register_card_driver(&sscape_pnpc_driver) >= 0)
+ if (pnp_register_card_driver(&sscape_pnpc_driver) == 0)
pnp_registered = 1;
#endif
return 0;
return snd_card_register(card);
}
-static int __init snd_wavefront_nonpnp_probe(struct platform_device *pdev)
+static int __devinit snd_wavefront_nonpnp_probe(struct platform_device *pdev)
{
int dev = pdev->id;
struct snd_card *card;
#ifdef CONFIG_PNP
+static unsigned int __devinitdata wavefront_pnp_devices;
static int __devinit snd_wavefront_pnp_detect(struct pnp_card_link *pcard,
const struct pnp_card_device_id *pid)
pnp_set_card_drvdata(pcard, card);
dev++;
+ wavefront_pnp_devices++;
return 0;
}
}
#ifdef CONFIG_PNP
- i = pnp_register_card_driver(&wavefront_pnpc_driver);
- if (i >= 0) {
+ err = pnp_register_card_driver(&wavefront_pnpc_driver);
+ if (!err) {
pnp_registered = 1;
- cards += i;
+ cards += wavefront_pnp_devices;
}
#endif
static int __initdata synthirq = -1;
static int __initdata isapnp = 1;
+static unsigned int cs4232_devices;
+
MODULE_DESCRIPTION("CS4232 based soundcard driver");
MODULE_AUTHOR("Hannu Savolainen, Paul Barton-Davis");
MODULE_LICENSE("GPL");
return -ENODEV;
}
pnp_set_drvdata(dev,isapnpcfg);
+ cs4232_devices++;
return 0;
}
#endif
cfg.irq = -1;
- if (isapnp &&
- (pnp_register_driver(&cs4232_driver) > 0)
- )
- return 0;
+ if (isapnp) {
+ pnp_register_driver(&cs4232_driver);
+ if (cs4232_devices)
+ return 0;
+ }
if(io==-1||irq==-1||dma==-1)
{
int ints[7];
/* If we have isapnp cards, no need for options */
- if (pnp_register_driver(&cs4232_driver) > 0)
+ pnp_register_driver(&cs4232_driver);
+ if (cs4232_devices)
return 1;
str = get_options(str, ARRAY_SIZE(ints), ints);
DBDMA_ALIGN(beep_dbdma_cmd_space);
/* set up emergency dbdma cmd */
emergency_dbdma_cmd = beep_dbdma_cmd+1 ;
- beep_buf = (short *) kmalloc(BEEP_BUFLEN * 4, GFP_KERNEL);
+ beep_buf = kmalloc(BEEP_BUFLEN * 4, GFP_KERNEL);
if (beep_buf == NULL) {
printk(KERN_ERR "dmasound_pmac: no memory for beep buffer\n");
kfree(beep_dbdma_cmd_space) ;
init_midi_hdr(midihdr);
- if ((midihdr->data = (u8 *) kmalloc(MIDIIN_BUFLEN, GFP_KERNEL)) == NULL) {
+ midihdr->data = kmalloc(MIDIIN_BUFLEN, GFP_KERNEL);
+ if (!midihdr->data) {
ERROR();
kfree(midihdr);
return -1;
midihdr->bytesrecorded = 0;
midihdr->flags = 0;
- if ((midihdr->data = (u8 *) kmalloc(count, GFP_KERNEL)) == NULL) {
+ midihdr->data = kmalloc(count, GFP_KERNEL);
+ if (!midihdr->data) {
ERROR();
kfree(midihdr);
return -EINVAL;
midihdr->bytesrecorded = 0;
midihdr->flags = 0;
- if ((midihdr->data = (u8 *) kmalloc(1, GFP_KERNEL)) == NULL) {
+ midihdr->data = kmalloc(1, GFP_KERNEL);
+ if (!midihdr->data) {
ERROR();
kfree(midihdr);
return -EINVAL;
/* Recording requires 24-bit DMA, so attempt to set dma mask
* to 24 bits first, then 32 bits (playback only) if that fails.
*/
- if (pci_set_dma_mask(pcidev, 0x00ffffff) &&
+ if (pci_set_dma_mask(pcidev, DMA_24BIT_MASK) &&
pci_set_dma_mask(pcidev, DMA_32BIT_MASK)) {
printk(KERN_WARNING "solo1: architecture does not support 24bit or 32bit PCI busmaster DMA\n");
return -ENODEV;
return 0;
}
-static void free_dsp_suspendmem(struct m3_card *card)
-{
- if(card->suspend_mem)
- vfree(card->suspend_mem);
-}
#else
#define alloc_dsp_suspendmem(args...) 0
-#define free_dsp_suspendmem(args...)
#endif
/*
if(ret) {
if(card->iobase)
release_region(pci_resource_start(pci_dev, 0), pci_resource_len(pci_dev, 0));
- free_dsp_suspendmem(card);
+ vfree(card->suspend_mem);
if(card->ac97) {
unregister_sound_mixer(card->ac97->dev_mixer);
kfree(card->ac97);
}
release_region(card->iobase, 256);
- free_dsp_suspendmem(card);
+ vfree(card->suspend_mem);
kfree(card);
}
devs = NULL;
void msnd_fifo_free(msnd_fifo *f)
{
- if (f->data) {
- vfree(f->data);
- f->data = NULL;
- }
+ vfree(f->data);
+ f->data = NULL;
}
int msnd_fifo_alloc(msnd_fifo *f, size_t n)
static struct sb_card_config *legacy = NULL;
#ifdef CONFIG_PNP
+static int pnp_registered;
static int __initdata pnp = 1;
/*
static int __initdata uart401 = 0;
}
/* Register legacy card with OSS subsystem */
-static int sb_init_legacy(void)
+static int __init sb_init_legacy(void)
{
struct sb_module_options sbmo = {0};
}
}
+static unsigned int sb_pnp_devices;
+
/* Probe callback function for the PnP API */
static int sb_pnp_probe(struct pnp_card_link *card, const struct pnp_card_device_id *card_id)
{
scc->conf.dma, scc->conf.dma2);
pnp_set_card_drvdata(card, scc);
+ sb_pnp_devices++;
return sb_register_oss(scc, &sbmo);
}
MODULE_DEVICE_TABLE(pnp_card, sb_pnp_card_table);
#endif /* CONFIG_PNP */
+static void __init_or_module sb_unregister_all(void)
+{
+#ifdef CONFIG_PNP
+ if (pnp_registered)
+ pnp_unregister_card_driver(&sb_pnp_driver);
+#endif
+}
+
static int __init sb_init(void)
{
int lres = 0;
#ifdef CONFIG_PNP
if(pnp) {
- pres = pnp_register_card_driver(&sb_pnp_driver);
+ int err = pnp_register_card_driver(&sb_pnp_driver);
+ if (!err)
+ pnp_registered = 1;
+ pres = sb_pnp_devices;
}
#endif
printk(KERN_INFO "sb: Init: Done\n");
/* If either PnP or Legacy registered a card then return
* success */
- if (pres <= 0 && lres <= 0) {
-#ifdef CONFIG_PNP
- pnp_unregister_card_driver(&sb_pnp_driver);
-#endif
+ if (pres == 0 && lres <= 0) {
+ sb_unregister_all();
return -ENODEV;
}
return 0;
sb_unload(legacy);
}
-#ifdef CONFIG_PNP
- pnp_unregister_card_driver(&sb_pnp_driver);
-#endif
+ sb_unregister_all();
- if (smw_free) {
- vfree(smw_free);
- smw_free = NULL;
- }
+ vfree(smw_free);
+ smw_free = NULL;
}
module_init(sb_init);
void sequencer_unload(void)
{
- if(queue)
- {
- vfree(queue);
- queue=NULL;
- }
- if(iqueue)
- {
- vfree(iqueue);
- iqueue=NULL;
- }
+ vfree(queue);
+ vfree(iqueue);
+ queue = iqueue = NULL;
}
in_use = 0;
- data_buffer = (char *)kmalloc(BUFFER_SIZE, GFP_KERNEL);
+ data_buffer = kmalloc(BUFFER_SIZE, GFP_KERNEL);
if (data_buffer == NULL)
return -ENOMEM;
#include <linux/spinlock.h>
#include <linux/smp_lock.h>
#include <linux/gameport.h>
+#include <linux/dma-mapping.h>
#include <linux/mutex.h>
return -ENODEV;
if (pcidev->irq == 0)
return -ENODEV;
- if (pci_set_dma_mask(pcidev, 0x00ffffff)) {
+ if (pci_set_dma_mask(pcidev, DMA_24BIT_MASK)) {
printk(KERN_WARNING "sonicvibes: architecture does not support 24bit PCI busmaster DMA\n");
return -ENODEV;
}
#include <linux/interrupt.h>
#include <linux/compiler.h>
#include <linux/delay.h>
+#include <linux/dma-mapping.h>
#include <sound/driver.h>
#include <sound/core.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/moduleparam.h>
+#include <linux/dma-mapping.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/info.h>
if ((err = pci_enable_device(pci)) < 0)
return err;
/* check, if we can restrict PCI DMA transfers to 31 bits */
- if (pci_set_dma_mask(pci, 0x7fffffff) < 0 ||
- pci_set_consistent_dma_mask(pci, 0x7fffffff) < 0) {
+ if (pci_set_dma_mask(pci, DMA_31BIT_MASK) < 0 ||
+ pci_set_consistent_dma_mask(pci, DMA_31BIT_MASK) < 0) {
snd_printk(KERN_ERR "architecture does not support 31bit PCI busmaster DMA\n");
pci_disable_device(pci);
return -ENXIO;
#include <linux/slab.h>
#include <linux/gameport.h>
#include <linux/moduleparam.h>
+#include <linux/dma-mapping.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/rawmidi.h>
return err;
}
/* check, if we can restrict PCI DMA transfers to 24 bits */
- if (pci_set_dma_mask(pci, 0x00ffffff) < 0 ||
- pci_set_consistent_dma_mask(pci, 0x00ffffff) < 0) {
+ if (pci_set_dma_mask(pci, DMA_24BIT_MASK) < 0 ||
+ pci_set_consistent_dma_mask(pci, DMA_24BIT_MASK) < 0) {
snd_printk(KERN_ERR "architecture does not support 24bit PCI busmaster DMA\n");
pci_disable_device(pci);
return -ENXIO;
#include <linux/slab.h>
#include <linux/gameport.h>
#include <linux/moduleparam.h>
+#include <linux/dma-mapping.h>
#include <sound/core.h>
#include <sound/control.h>
#include <sound/pcm.h>
chip->irq = -1;
/* check if we can restrict PCI DMA transfers to 24 bits */
- if (pci_set_dma_mask(pci, 0x00ffffff) < 0 ||
- pci_set_consistent_dma_mask(pci, 0x00ffffff) < 0) {
+ if (pci_set_dma_mask(pci, DMA_24BIT_MASK) < 0 ||
+ pci_set_consistent_dma_mask(pci, DMA_24BIT_MASK) < 0) {
snd_printk(KERN_ERR "architecture does not support 24bit PCI busmaster DMA\n");
err = -ENXIO;
goto out_err;
#include <linux/dma-mapping.h>
#include <linux/slab.h>
#include <linux/moduleparam.h>
+#include <linux/dma-mapping.h>
#include <sound/core.h>
#include <sound/initval.h>
#include <sound/pcm.h>
#include <linux/gameport.h>
#include <linux/moduleparam.h>
#include <linux/delay.h>
+#include <linux/dma-mapping.h>
#include <sound/core.h>
#include <sound/control.h>
#include <sound/pcm.h>
if ((err = pci_enable_device(pci)) < 0)
return err;
/* check, if we can restrict PCI DMA transfers to 24 bits */
- if (pci_set_dma_mask(pci, 0x00ffffff) < 0 ||
- pci_set_consistent_dma_mask(pci, 0x00ffffff) < 0) {
+ if (pci_set_dma_mask(pci, DMA_24BIT_MASK) < 0 ||
+ pci_set_consistent_dma_mask(pci, DMA_24BIT_MASK) < 0) {
snd_printk(KERN_ERR "architecture does not support 24bit PCI busmaster DMA\n");
pci_disable_device(pci);
return -ENXIO;
#include <linux/slab.h>
#include <linux/gameport.h>
#include <linux/moduleparam.h>
+#include <linux/dma-mapping.h>
#include <linux/mutex.h>
#include <sound/core.h>
#include <linux/dma-mapping.h>
#include <linux/slab.h>
#include <linux/moduleparam.h>
+#include <linux/dma-mapping.h>
#include <linux/mutex.h>
+
#include <sound/core.h>
#include <sound/cs8427.h>
#include <sound/info.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>
#include <linux/moduleparam.h>
+#include <linux/dma-mapping.h>
#include <sound/core.h>
#include <sound/info.h>
#include <sound/control.h>
#include <linux/dma-mapping.h>
#include <linux/moduleparam.h>
#include <linux/mutex.h>
+#include <linux/dma-mapping.h>
+
#include <sound/core.h>
#include <sound/initval.h>
#include <sound/info.h>
#include <linux/delay.h>
#include <linux/moduleparam.h>
#include <linux/mutex.h>
+#include <linux/dma-mapping.h>
#include <sound/core.h>
#include <sound/initval.h>
}
/*
- * SPDIF I/O capabilites (half-duplex mode)
+ * SPDIF I/O capabilities (half-duplex mode)
*/
static struct snd_pcm_hardware snd_rme32_spdif_info = {
.info = (SNDRV_PCM_INFO_MMAP_IOMEM |
};
/*
- * ADAT I/O capabilites (half-duplex mode)
+ * ADAT I/O capabilities (half-duplex mode)
*/
static struct snd_pcm_hardware snd_rme32_adat_info =
{
};
/*
- * SPDIF I/O capabilites (full-duplex mode)
+ * SPDIF I/O capabilities (full-duplex mode)
*/
static struct snd_pcm_hardware snd_rme32_spdif_fd_info = {
.info = (SNDRV_PCM_INFO_MMAP |
};
/*
- * ADAT I/O capabilites (full-duplex mode)
+ * ADAT I/O capabilities (full-duplex mode)
*/
static struct snd_pcm_hardware snd_rme32_adat_fd_info =
{
}
/*
- * Digital output capabilites (S/PDIF)
+ * Digital output capabilities (S/PDIF)
*/
static struct snd_pcm_hardware snd_rme96_playback_spdif_info =
{
};
/*
- * Digital input capabilites (S/PDIF)
+ * Digital input capabilities (S/PDIF)
*/
static struct snd_pcm_hardware snd_rme96_capture_spdif_info =
{
};
/*
- * Digital output capabilites (ADAT)
+ * Digital output capabilities (ADAT)
*/
static struct snd_pcm_hardware snd_rme96_playback_adat_info =
{
};
/*
- * Digital input capabilites (ADAT)
+ * Digital input capabilities (ADAT)
*/
static struct snd_pcm_hardware snd_rme96_capture_adat_info =
{
}
/* Channel playback mixer as default control
- Note: the whole matrix would be 128*HDSPM_MIXER_CHANNELS Faders, thats to big for any alsamixer
+ Note: the whole matrix would be 128*HDSPM_MIXER_CHANNELS Faders, thats too big for any alsamixer
they are accesible via special IOCTL on hwdep
and the mixer 2dimensional mixer control */
#include <linux/slab.h>
#include <linux/gameport.h>
#include <linux/moduleparam.h>
+#include <linux/dma-mapping.h>
#include <sound/core.h>
#include <sound/pcm.h>
if ((err = pci_enable_device(pci)) < 0)
return err;
/* check, if we can restrict PCI DMA transfers to 24 bits */
- if (pci_set_dma_mask(pci, 0x00ffffff) < 0 ||
- pci_set_consistent_dma_mask(pci, 0x00ffffff) < 0) {
+ if (pci_set_dma_mask(pci, DMA_24BIT_MASK) < 0 ||
+ pci_set_consistent_dma_mask(pci, DMA_24BIT_MASK) < 0) {
snd_printk(KERN_ERR "architecture does not support 24bit PCI busmaster DMA\n");
pci_disable_device(pci);
return -ENXIO;
#include <linux/slab.h>
#include <linux/vmalloc.h>
#include <linux/gameport.h>
+#include <linux/dma-mapping.h>
#include <sound/core.h>
#include <sound/info.h>
if ((err = pci_enable_device(pci)) < 0)
return err;
/* check, if we can restrict PCI DMA transfers to 30 bits */
- if (pci_set_dma_mask(pci, 0x3fffffff) < 0 ||
- pci_set_consistent_dma_mask(pci, 0x3fffffff) < 0) {
+ if (pci_set_dma_mask(pci, DMA_30BIT_MASK) < 0 ||
+ pci_set_consistent_dma_mask(pci, DMA_30BIT_MASK) < 0) {
snd_printk(KERN_ERR "architecture does not support 30bit PCI busmaster DMA\n");
pci_disable_device(pci);
return -ENXIO;
struct sound_unit
{
int unit_minor;
- struct file_operations *unit_fops;
+ const struct file_operations *unit_fops;
struct sound_unit *next;
char name[32];
};
* join into it. Called with the lock asserted
*/
-static int __sound_insert_unit(struct sound_unit * s, struct sound_unit **list, struct file_operations *fops, int index, int low, int top)
+static int __sound_insert_unit(struct sound_unit * s, struct sound_unit **list, const struct file_operations *fops, int index, int low, int top)
{
int n=low;
* list. Acquires locks as needed
*/
-static int sound_insert_unit(struct sound_unit **list, struct file_operations *fops, int index, int low, int top, const char *name, umode_t mode, struct device *dev)
+static int sound_insert_unit(struct sound_unit **list, const struct file_operations *fops, int index, int low, int top, const char *name, umode_t mode, struct device *dev)
{
struct sound_unit *s = kmalloc(sizeof(*s), GFP_KERNEL);
int r;
* a negative error code is returned.
*/
-int register_sound_special_device(struct file_operations *fops, int unit,
+int register_sound_special_device(const struct file_operations *fops, int unit,
struct device *dev)
{
const int chain = unit % SOUND_STEP;
EXPORT_SYMBOL(register_sound_special_device);
-int register_sound_special(struct file_operations *fops, int unit)
+int register_sound_special(const struct file_operations *fops, int unit)
{
return register_sound_special_device(fops, unit, NULL);
}
* number is returned, on failure a negative error code is returned.
*/
-int register_sound_mixer(struct file_operations *fops, int dev)
+int register_sound_mixer(const struct file_operations *fops, int dev)
{
return sound_insert_unit(&chains[0], fops, dev, 0, 128,
"mixer", S_IRUSR | S_IWUSR, NULL);
* number is returned, on failure a negative error code is returned.
*/
-int register_sound_midi(struct file_operations *fops, int dev)
+int register_sound_midi(const struct file_operations *fops, int dev)
{
return sound_insert_unit(&chains[2], fops, dev, 2, 130,
"midi", S_IRUSR | S_IWUSR, NULL);
* and will always allocate them as a matching pair - eg dsp3/audio3
*/
-int register_sound_dsp(struct file_operations *fops, int dev)
+int register_sound_dsp(const struct file_operations *fops, int dev)
{
return sound_insert_unit(&chains[3], fops, dev, 3, 131,
"dsp", S_IWUSR | S_IRUSR, NULL);
*/
-int register_sound_synth(struct file_operations *fops, int dev)
+int register_sound_synth(const struct file_operations *fops, int dev)
{
return sound_insert_unit(&chains[9], fops, dev, 9, 137,
"synth", S_IRUSR | S_IWUSR, NULL);
int chain;
int unit = iminor(inode);
struct sound_unit *s;
- struct file_operations *new_fops = NULL;
+ const struct file_operations *new_fops = NULL;
chain=unit&0x0F;
if(chain==4 || chain==5) /* dsp/audio/dsp16 */
* switching ->f_op in the first place.
*/
int err = 0;
- struct file_operations *old_fops = file->f_op;
+ const struct file_operations *old_fops = file->f_op;
file->f_op = new_fops;
spin_unlock(&sound_loader_lock);
if(file->f_op->open)
struct usX2Ydev * usX2Y = subs->usX2Y;
usX2Y->prepare_subs = subs;
subs->urb[0]->start_frame = -1;
- smp_wmb(); // Make shure above modifications are seen by i_usX2Y_subs_startup()
+ smp_wmb(); // Make sure above modifications are seen by i_usX2Y_subs_startup()
usX2Y_urbs_set_complete(usX2Y, i_usX2Y_usbpcm_subs_startup);
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / commitdiff